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GX620

MOUNTED BACKHOESGX620, GX720, GX920 & GX920 XT SERIES

OPERATOR'S MANUAL

GX920

PRINTED IN CANADAREV 181113 PART NUMBER: Z97054

Wallenstein backhoes have been designed to operate at a flow rate specification of 5-7 gpm (18.9-26.5 lpm). Equipment that has a flow rate higher than the specification must have the # BFC501 Flow Divider Kit installed. Operating the backhoe above

5-7 gpm (18.9-26.5 lpm) will cause damage to the seals and will void the warranty.

EMB Manufacturing Inc.4144 Boomer Line · St. Clements, On · N0B 2M0 · Canada

Ph: (519) 699-9283 · Fax: (519) 699-4146 www.embmfg.com

BY EMB MFG INC.

2

WARRANTYEffective on products retailed on or after January 1, 2011.

Register your product online at www.embmfg.com within 30 days of purchase to activate warranty.

This product is warranted to be free of defects in materials and workmanship under normal use and service, for a period of

from the date of purchase, when operated and maintained in accordance with the Operating and Maintenance Instructions supplied with this unit. Warranty is limited to the repair of the product and/or replacement of parts.

This warranty does not cover the following items:1) Machines or parts lost or damaged during shipment,2) Normal maintenance or adjustments after initial pre-service and set up is completed3) Normal replacement of service items.4) Accessory items / parts not supplied by EMB MFG INC.5) Damages resulting from:

• misuse, negligence, accident, theft or fire• use of improper or insufficient fuel, fluids or lubricants • use of parts or after market accessories other than genuine EMB MFG INC. parts • modifications, alteration, tampering or improper repair performed by parties other than an authorized dealer• any device or accessories installed by parties other than an authorized EMB dealer or distributor

Engines are covered by the manufacturer of the engine and covered by the warranty period specified by that manufacturer. Engine warranty must be registered at the engine manufactures website. For service contact your local engine dealer.

Under no circumstances will the manufacturer be liable for any consequential damage or expense of any kind, including loss of profits. The manufacturer is under no circumstances liable for tow vehicle of any kind. The manufacturer is not liable for the maintenance of the product.

This warranty is extended only to the original purchaser and is not transferable. Warranty is void if repairs are attempted by anyone other than a Wallenstein Authorized Service Centre.

If a difficulty develops with the product, contact the local dealer from which you purchased the unit. Only Wallenstein author-ized dealers are authorized to make repairs to the product or affect the replacement of defective parts, which will be done at no charge within a reasonable time after the receipt of the product. Unit or parts shall be returned at the customer’s expense to the Authorized Service Centre. Damage in transit is not covered by warranty. Include the original purchase receipt with any claim (keep a copy of the receipt for your files).

The distributor’s liability under warranty is limited to the repair of the product and/or replacement of parts and is given to the purchaser in lieu of all other remedies including incidental and consequential charges. There are no warranties, expressed or implied, other than those specified herein.

EMB MFG Inc4144 Boomer Line, St Clements, ON N0B 2M0 Canada

Phone: 519-699-9283 Fax: 519-699-4146 : attention to Warranty DeptEmail: [email protected]

WARRANTY IS VOID IF NOT REGISTERED

Three (3) Years for ConsumerOne (1) Year for Commercial/Rental

rev.201011

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____ All Decals Installed ____ Reflectors Clean ____ Guards and Shields Installed ____ Review Operating and Safety Instructions

____ Fasteners Tight ____ Check Oil Level in Resevoir (If so Equipped) ____ Hydraulic Fittings Tight - No Leaks ____ Hydraulic Lines Free and in Good Condition ____ Hydraulic Controls Move Freely ____ Lubricate Machine

WALLENSTEINBACKHOE ATTACHMENT

DELIVERY INSPECTION REPORT

Date Owner's Signature

Date Dealer’s Rep. Signature

The above equipment and Operator’s Manual have been received by me and I have been thoroughly instructed as to care, adjustments, safe operation and applicable warranty policy.

This form must be filled out by the dealer and signed by both the dealer and the customer at the time of deliv-ery.

Customer’s Name Dealer Name

Address Address

City, State/Province, Code City, State/Province, Code

Phone Number ( ) Phone Number ( )

Contact Name

Model

Serial Number

Delivery Date I have thoroughly instructed the buyer on the above described equipment which review included the Op-erator’s Manual content, equipment care, adjustments, safe operation and applicable warranty policy.

DEALER INSPECTION REPORT

SAFETY

To activate warranty, register your product online at

www.embmfg.com

4

SERIAL NUMBER LOCATIONAlways give your dealer the serial number of your Wallenstein Backhoe Attachment when ordering parts or requesting service or other information.

The machine is equipped with a serial plate where indicated. Please mark the number in the space pro-vided for easy reference.

SERIAL NUMBER LOCATION

Model Number ____________________________________________________Serial Number ____________________________________________________

GX920

GX620

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TABLE OF CONTENTS

WARRANTY ..................................................................3DELIVERY INSPECTION REPORT ..............................4SERIAL NUMBER LOCATION .....................................51 INTRODUCTION ..............................................62 SAFETY ...........................................................7

2.1 GENERAL SAFETY ....................................82.2 EQUIPMENT SAFETY GUIDELINES .........92.3 SAFETY TRAINING ..................................102.4 SAFETY SIGNS ........................................102.5 PREPARATION ......................................... 112.6 OPERATING SAFETY ......................................122.7 TRANSPORT SAFETY .............................132.8 STORAGE SAFETY .................................132.9 MAINTENANCE SAFETY .........................132.10 HYDRAULIC SAFETY ..............................142.11 SIGN-OFF FORM .....................................15

3 SAFETY SIGN LOCATIONS .........................163.1 THREE PANEL SAFETY SIGNS .............163.2 TWO PANEL SAFETY SIGNS ..................184 OPERATION .............................................204.1 TO THE NEW OPERATOR OR OWNER .204.3 MACHINE BREAK-IN ...............................224.4 PRE-OPERATION CHECKLIST ...............224.5 EQUIPMENT MATCHING .........................234.6 CONTROLS ..............................................244.7 PREPARATION AND ASSEMBLY ............264.7.1 CENTER LINK AND STRUT ....................264.7.2 BELLY MOUNT SYSTEM .........................28

4.7.3 4 POINT MOUNTING SYSTEM ...............294.7.4 AUXILIARY HYDRAULIC SYSTEM ..........304.8 ATTACHING / UNHOOKING TRACTOR ..324.8.1 MOUNTING ..............................................324.8.2 OPTIONAL HYDRAULIC PUMP ...............364.8.3 MOUNTING TO SKID STEER ..................404.9 FIELD OPERATION ..................................444.10 TRANSPORTING .....................................554.11 STORAGE ................................................574.11.1 PLACING IN STORAGE ...........................574.11.2 REMOVING FROM STORAGE ................58

5 SERVICE AND MAINTENANCE ...................595.1 SERVICE ..................................................595.1.1 FLUIDS AND LUBRICANTS .....................595.1.2 GREASING ...............................................595.1.3 SERVICING INTERVALS .........................605.1.4 SERVICE RECORD .................................655.2 MAINTENANCE ........................................665.2.1 HYDRAULIC OIL ......................................665.2.2 BUCKET TEETH .......................................66

6 TROUBLE SHOOTING ..................................677 SPECIFICATIONS .........................................68

7.1 MECHANICAL ..........................................687.2 BOLT TORQUE ........................................697.3 HYDRAULIC FITTING TORQUE ..............707.4 HYDRAULIC OIL - MATERIAL SAFETY DATA .......................................................................71

8 INDEX ............................................................75

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1 INTRODUCTIONCongratulations on your choice of an Wallenstein Backhoe to compliment your operation. This equipment has been designed and manufactured to meet the needs of a discerning digging, excavating or trenching industry.

Safe, efficient and trouble free operation of your Wallenstein Backhoe requires that you and anyone else who will be operating or maintaining the machine, read and understand the Safety, Operation, Maintenance and Trouble Shooting information contained within the Operator's Manual.

This manual covers the Models GX620, GX720, GX920 and GX920XT manufactured by Wallenstein. Use the Table of Contents or Index as a guide to locate required information.

Keep this manual handy for frequent reference and to pass on to new operators or owners. Call your Wallenstein dealer or the Distributer if you need assistance, information or additional copies of the manuals.

OPERATOR ORIENTATION - The directions left, right, front and rear, as mentioned throughout this manual, are determined when sitting in the operator's seat and facing toward the boom.

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2 SAFETYSAFETY ALERT SYMBOL

Why is SAFETY important to you?

The Safety Alert symbol identifies important safety messages on the Wallenstein Backhoe Attachment and in the manual. When you see this symbol, be alert to the possibility of personal injury or death. Follow the instructions in the safety mes-sage.

This Safety Alert symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!

Accidents Disable and Kill Accidents Cost Accidents Can Be Avoided

3 Big Reasons

If you have any questions not answered in this manual or require additional copies or the manual is dam-aged, please contact your dealer or Wallenstein, 4144 Boomer Line, St. Clements, ON, N0B 2M0. Phone (519) 699-9283 or Fax (519) 699-4146.

DANGER - Indicates an imminently hazardous situation that, if not avoided, will result in death or serious injury. This signal word is to be limited to the most extreme situations typically for machine components which, for func-tional purposes, cannot be guarded.

WARNING - Indicates a potentially hazardous situation that, if not avoided, could result in death or serious injury, and includes hazards that are exposed when guards are removed. It may also be used to alert against unsafe practices.

CAUTION - Indicates a potentially hazardous situation that, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.

SIGNAL WORDS:

Note the use of the signal words DANGER, WARNING and CAUTION with the safety messages. The appropriate signal word for each message has been selected using thefollowing guide-lines:

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SAFETYYOU are responsible for the SAFE operation and maintenance of your Wallenstein Backhoe Attach-ment. YOU must ensure that you and anyone else who is going to use, maintain or work around the Backhoe be familiar with the using and main-tenance procedures and related SAFETY informa-tion contained in this manual. This manual will take you step-by-step through your working day and alerts you to all good safety practices that should be used while using the Backhoe.

Remember, YOU are the key to safety. Good safety practices not only protect you but also the people around you. Make these practices a work-ing part of your safety program. Be certain that EVERYONE using this equipment is familiar with the recommended using and maintenance proce-dures and follows all the safety precautions. Most accidents can be prevented. Do not risk injury or death by ignoring good safety practices.

• Backhoe Attachment owners must give oper-ating instructions to operators or employees before allowing them to operate the machine, and at least annually thereafter.

• The most important safety device on this equipment is a SAFE operator. It is the op-erator’s responsibility to read and understand ALL Safety and Operating instructions in the manual and to follow these. Most accidents can be avoided.

• A person who has not read and understood all using and safety instructions is not qualified to use the machine. An untrained operator exposes himself and bystanders to possible serious injury or death.

• Do not modify the equipment in any way. Unauthorized modification may impair the function and/or safety and could affect the life of the equipment.

• Think SAFETY! Work SAFELY!

1. Read and understand the Operator’s Manual and all safety signs before operat-ing, maintaining, adjusting or servicing the Backhoe.

2.1 GENERAL SAFETY

2. Have a first-aid kit available for use should the need arise and know how to use it.

3. Have a fire extinguisher available for use should the need arise and know how to use it.

4. Do not allow riders.

5. Wear appropriate protective gear. This list includes but is not limited to:

- A hard hat - Protective shoes with slip resistant soles - Protective glasses,

goggles or face shield - Heavy gloves - Wet weather gear - Hearing Protection - Respirator or filter mask

6. Install and secure all guards before starting.

7. Wear suitable ear protection for prolonged exposure to excessive noise.

8. Lower boom and bucket, place all controls in neutral, stop engine, remove ignition key and wait for all moving parts to stop before servicing, adjusting, repairing or maintaining.

9. Clear the area of people, especially small children, before using the unit.

10. Review safety related items annually.

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2.2 EQUIPMENT SAFETY GUIDELINES

1. Safety of the operator and bystanders is one of the main concerns in designing and de-veloping equipment. However, every year many accidents occur which could have been avoided by a few seconds of thought and a more careful approach to handling equipment. You, the operator, can avoid many accidents by observing the following precautions in this section. To avoid personal injury or death, study the following precautions and insist those working with you, or for you, follow them.

2. In order to provide a better view, certain photographs or illustrations in this manual may show an assembly with a safety shield removed. However, equipment should never be used in this condition. Keep all shields in place. If shield removal becomes necessary for repairs, replace the shield prior to use.

3. Replace any safety sign or instruction sign that is not readable or is missing. Location of such safety signs is indicated in this manual.

4. Never use alcoholic beverages or drugs which can hinder alertness or coordination while us-ing this equipment. Consult your doctor about using this machine while taking prescription medications.

5. Under no circumstances should young children be allowed to work with this equipment. Do not allow persons to use or assemble this unit until they have read this manual and have developed a thorough understanding of the safety precautions and of how it works. Review the safety instructions with all users annually.

6. This equipment is dangerous to children and persons unfamiliar with its operation. The operator should be a responsible, properly trained and physically able person familiar with machinery and trained in this equipment's operations. If the elderly are assisting with work, their physical limitations need to be recognized and accommodated.

7. Never exceed the limits of a piece of machin-ery. If its ability to do a job, or to do so safely, is in question - DON'T TRY IT.

8. Do not modify the equipment in any way. Un-authorized modification may result in serious injury or death and may impair the function and life of the equipment.

9. In addition to the design and configuration of this implement, including Safety Signs and Safety Equipment, hazard control and ac-cident prevention are dependent upon the awareness, concern, prudence, and proper training of personnel involved in the operation, transport, maintenance, and storage of the machine. Refer also to Safety Messages and operation instruction in each of the appropri-ate sections of the engine and machine manu-als. Pay close attention to the Safety Signs affixed to the tractor and the machine.

Wallenstein backhoes have been designed to operate at a flow rate specification of 5-7 gpm (18.9-26.5 lpm). Equipment that

has a flow rate higher than the specification must have the # BFC501 Flow Divider Kit installed. Op-erating the backhoe above 5-7 gpm (18.9-26.5 lpm) will cause damage to the seals and will

void the warranty.

Wallenstein backhoes have been designed to rigidly attach to the frame of the tractor / skidsteer, to prevent unwanted movement

while operating the backhoe. Operating the trac-tors hydraulic 3 point hitch or bucket/loader controls on a skidsteer while the backhoe is attached should be avoided and will cause dam-age to the tractor sub frame / skidsteer tieback.

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2.3 SAFETY TRAINING

1. Safety is a primary concern in the design and manufacture of our products. Unfortunately, our efforts to provide safe equipment can be wiped out by a single careless act of an operator or bystander.

2. In addition to the design and configuration of equipment, hazard control and accident pre-vention are dependent upon the awareness, concern, prudence and proper training of personnel involved in the operation, transport, maintenance and storage of this equipment.

3. It has been said, "The best safety feature is an informed, careful opera-tor." We ask you to be that kind of an operator. It is the operator's responsibility to read and under-stand ALL Safety and Using instructions in the manual and to follow these. Accidents can be avoided.

4. Working with unfamiliar equipment can lead to careless injuries. Read this manual before assembly or using, to acquaint yourself with the machine. If this machine is used by any person other than yourself, or is loaned or rented, it is the machine owner's responsibil-ity to make certain that the operator, prior to using:

a. Reads and understands the operator's manuals.

b. Is instructed in safe and proper use.

5. Know your controls and how to stop power unit engine and machine quickly in an emer-gency. Read this manual and the one pro-vided with your engine.

6. Train all new personnel and review instruc-tions frequently with existing workers. Be certain only a properly trained and physically able person will use the machinery. A person who has not read and understood all using and safety instructions is not qualified to use the machine. An untrained operator exposes himself and bystanders to possible serious in-jury or death. If the elderly are assisting with the work, their physical limitations need to be recognized and accommodated.

2.4 SAFETY SIGNS

1. Keep safety signs clean and legible at all times.

2. Replace safety signs that are missing or have become illegible.

3. Replaced parts that displayed a safety sign should also display the current sign.

4. Safety signs displayed in Section 3 each have a part number in the lower right hand corner. Use this part number when ordering replace-ment parts.

5. Safety signs are available from your author-ized Distributor or Dealer Parts Department or the factory.

How to Install Safety Signs:

• Be sure that the installation area is clean and dry.

• Be sure temperature is above 50°F (10°C).

• Determine exact position before you remove the backing paper.

• Remove the smallest portion of the split back-ing paper.

• Align the sign over the specified area and carefully press the small portion with the ex-posed sticky backing in place.

• Slowly peel back the remaining paper and carefully smooth the remaining portion of the sign in place.

• Small air pockets can be pierced with a pin and smoothed out using the piece of sign backing paper.

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2.5 PREPARATION

1. Never use the engine and machine until you have read and completely understand this manual, the Tractor Operator's Manual and each of the Safety Messages found on the safety signs on the tractor and machine.

2. Personal pro-tection equip-ment including hard hat, safety glasses, safety shoes, and gloves are rec-ommended dur-ing assembly, installation, operation, adjustment, maintain-ing, repairing, removal, cleaning, or moving the unit. Do not allow long hair, loose fitting clothing or jewelery to be around equipment.

3. PROLONGED EXPOSURE TO LOUD NOISE MAY CAUSE PERMANENT HEARING LOSS!

Power equipment with or without equipment attached can often be noisy enough to cause permanent, partial hearing loss. We recommend that you wear hearing protection on a full-time basis if the noise in the Operator's position exceeds 80db. Noise over 85db on a long-term basis can cause severe hearing loss. Noise over 90db adjacent to the Operator over a long-term ba-sis may cause permanent, total hearing loss. NOTE: Hearing loss from loud noise (from tractors, chain saws, radios, and other such sources close to the ear) is cumulative over a lifetime without hope of natural recovery.

4. Operate the machine only with a tractor equipped with an approved Roll-Over-Protective Structure (ROPS). Always wear your seat belt when oper-ating the tractor. Serious injury or even death could result from falling off the tractor - - particularly during a turnover when the operator could be pinned under the ROPS or the tractor.

5. Review maps of underground utilities before starting to dig. Remove all sticks, stones, roots, and wires from working area before starting. Take care not to contact overhead and underground obstructions during opera-tion.

6. Keep boom and bucket away from overhead and underground power lines. Electrocution can occur without direct contact with an over-head power line.

7. Operate only in daylight or good artificial light.

8. Be sure machine is properly mounted, adjust-ed and in good operating condition.

9. Ensure that all safety shielding and safety signs are properly installed and in good condi-tion.

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2.6 OPERATING SAFETY

1. Please remember it is important that you read and heed the safety signs on the Backhoe. Clean or replace all safety signs if they can-not be clearly read and understood. They are there for your safety, as well as the safety of others. The safe use of this machine is strictly up to you, the operator.

2. All things with moving parts are potentially hazardous. There is no substitute for a cau-tious, safe-minded operator who recognizes potential hazards and follows reasonable safety practices. The manufacturer has designed this Backhoe to be used with all its safety equipment properly attached, to minimize the chance of accidents. Study this manual to make sure you have all safety equipment attached.

3. If a safety shield or guard is removed for any reason, it must be replaced before the ma-chine is again operated.

4. Always use the drawbar anchor bracket when mounting a Backhoe to tractor. Adjust to pre-vent Backhoe from moving when digging.

5. Attach the tractor side plate to reinforce the frame if required. Do not overload the tractor frame.

6. Do not use a "Quick Hitch" on the 3 point hitch.


8. Never operate controls from the ground. Op-erate only from the operator's seat to prevent unexpected boom movement that can lead to crushing between frame members.

9. Do not dig under machine or stabilizers. A cave-in could result and the machine could fall into the excavation.

10. Lower stabilizers to the ground to support machine befoe starting to dig.

11. Keep boom and bucket away from overhead and underground power lines. Electrocution can occur without direct contact with an over-head power line.

12. Do not exceed machine lift capacity. Over-loading can cause structural damage and lead to unsafe operating conditions.

13. Position Backhoe so that loads extend directly behind machine when lifting or placing heavy objects.

14. Counter-balance backhoe with suitcase weights or a loader to provide stability. Unbal-anced machines can tip during operation.

15. Never carry, lift or move people on boom or bucket.

16. Always use two people to handle heavy, un-wieldy components during assembly, installa-tion, removal or moving.

17. Never place any part of your body where it would be in danger if movement should occur during assembly, installation, operation, main-taining, repairing, removal or moving.

18. Do not walk or work under a raised machine or attachment unless it is securely blocked or held in position. Do not depend on the tractor hydraulic system to hold the machine or at-tachment in place.

19. Never use alcoholic beverages or drugs which can hinder alertness or coordination while operating this equipment. Consult your doc-tor about operating this machine while taking prescription medications.

20. Do not allow riders on this machine at any time. There is no safe place for any riders.

21. Before you operate the machine, check over all hydraulic lines, hoses, connections and components. Replace any worn or damaged parts immediately. Tighten all leaking fittings.

22. Keep hands, feet, hair, jewelry, and clothing away from all moving and/or rotating parts.

23. Review safety instructions annually.

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2.9 MAINTENANCE SAFETY1. Good maintenance is your responsibility. Poor

maintenance is an invitation to trouble.

2. Follow good shop practices.

- Keep service area clean and dry.

- Be sure electrical outlets and tools are properly grounded.

- Use adequate light for the job at hand.

3. Make sure there is plenty of ventilation. Never operate the tractor in a closed building. The exhaust fumes may cause asphyxiation.

4. Before working on this machine, lower the boom / bucket to the ground, place all controls in neutral, shut off the engine, set the park brake and remove the ignition key.

5. Never work under equipment unless it is blocked securely.

6. Use personal protection devices such as eye, hand and hearing protectors, when performing any service or maintenance work.

7. Where replacement parts are necessary for periodic maintenance and servicing, genuine factory replacement parts must be used to restore your equipment to original specifica-tions. The manufacturer will not be responsi-ble for injuries or damages caused by use of unap-proved parts and/or accessories.

8. A fire extinguisher and first aid kit should be kept readily accessible while per-forming maintenance on this equipment.

9. Periodically tighten all bolts, nuts and screws and check that all fasteners are properly torqued.

10. When completing a maintenance or service function, make sure all safety shields and devices are installed before placing unit in service.

2.7 TRANSPORT SAFETY1. Comply with state and local laws governing

safety and transporting of machinery on public roads.

2. The use of flashing amber lights is accept-able in most localities. However some locali-ties prohibit their use. Local laws should be checked for all highway lighting and marking requirements.

3. At all times, when driving the tractor and equipment on the road or highway under 20 mph (32 kph) use flashing amber warn-ing lights and a slow moving vehicle (SMV) identification emblem. Do not exceed 20 mph (32 kph). Reduce speed on rough roads and surfaces.

4. Plan your route to avoid heavy traffic.

5. Always install transport lock pins and retainers before transporting.

6. Do not drink and drive.

7. Be a safe and courteous driver. Always yield to oncoming traffic in all situations, including narrow bridges, intersections, etc. Watch for traffic when operating near or crossing road-ways.

8. Turn into curves or go up or down hills only at a low speed and a gradual steering angle. Make certain that at least 20% of the tractor's weight is on the front wheels to maintain safe steerage. Slow down on rough or uneven ground.

9. Never allow riders on either tractor or ma-chine.

2.8 STORAGE SAFETY1. Store the unit in an area away from human

activity.

2. Do not allow children to play on or around the stored machine.

3. Store the unit in a dry, level area. Support the frame with planks if required.

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2.10 HYDRAULIC SAFETY1. Make sure that all the components in the hy-

draulic system are kept in good condition and are clean.

2. Before applying pressure to the system, make sure all components are tight, and that lines, hoses and couplings are not damaged.

3. Do not attempt any makeshift repairs to the hydraulic lines, fittings or hoses by using tapes, clamps or cements. The hydraulic sys-tem operates under extremely high pressure. Such repairs will fail suddenly and create a hazardous and unsafe condition.

4. Wear proper hand and eye protection when searching for a high pressure hy-draulic leak. Use a piece of wood or cardboard as a backstop instead of hands to isolate and identify a leak.

5. If injured by a concentrated high-pressure stream of hydraulic fluid, seek medical atten-tion immediately. Serious infection or toxic reaction can develop from hydraulic fluid piercing the skin surface.

6. Relieve pressure on hydraulic system before maintaining or working on system.

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2.11 SIGN-OFF FORMWallenstein follows the general Safety Standards specified by the American Society of Agricultural and Biological Engineers (ASABE) and the Occupational Safety and Health Administration (OSHA). Anyone who will be using and/or maintaining the Backhoe must read and clearly understand ALL Safety, Usage and Maintenance information presented in this manual.

Do not use or allow anyone else to use this Backhoe until such information has been reviewed. Annually review this information before the season start-up.

Make these periodic reviews of SAFETY and OPERATION a standard practice for all of your equipment. We feel that an untrained operator is unqualified to use this machine.

A sign-off sheet is provided for your record keeping to show that all personnel who will be working with the equipment have read and understand the information in the Operator’s Manual and have been instructed in the operation of the equipment.

EMPLOYEES SIGNATURE EMPLOYERS SIGNATURE

SIGN-OFF FORM

DATE

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REMEMBER - If safety signs have been damaged, removed, become illegible or parts replaced without safety signs, new signs must be applied. New safety signs are available from your authorized dealer.

3 SAFETY SIGN LOCATIONS3.1 THREE PANEL SAFETY SIGNS The types of safety signs and locations on the equipment are shown in the illustrations that follow. Good safety requires that you familiarize yourself with the various safety signs, the type of warning and the area, or particular function related to that area, that requires your SAFETY AWARENESS.


A B

A

BCC

#Z94036

#Z94037

17


The types of safety signs and locations on the equipment are shown in the illustrations that follow. Good safety requires that you familiarize yourself with the various safety signs, the type of warning and the area, or particular function related to that area, that requires your SAFETY AWARENESS.• Think SAFETY! Work SAFELY!

C

Install lock pin and retainer through boom swing and raise lock brackets before transport-ing or servicing.

WARNING

AB

C

#Z94038

18


3.2 TWO PANEL SAFETY SIGNSThe types of safety signs and locations on the equipment are shown in the illustrations that follow. Good safety requires that you familiarize yourself with the various safety signs, the type of warning and the area, or particular function related to that area, that requires your SAFETY AWARENESS.


A B

AB

CC

Z94119 Z94112

19


The types of safety signs and locations on the equipment are shown in the illustrations that follow. Good safety requires that you familiarize yourself with the various safety signs, the type of warning and the area, or particular function related to that area, that requires your SAFETY AWARENESS.• Think SAFETY! Work SAFELY!

C

AB

C

Z94113

20

4 OPERATION

The Wallenstein Backhoe is a medium duty ma-chine that attaches to the 3 point hitch or sub-frame of a low horsepower Agricultural tractor or a skidsteer and can be used for all light to medium duty digging, trenching and excavating. Be famil-iar with the machine before starting.

It is the responsibility of the owner or opera-tor to read this manual and to train all other operators before they start working with the machine. Follow all safety instructions exact-ly. Safety is everyone's business. By follow-ing recommended procedures, a safe working environment is provided for the operator, bystanders and the area around the work site. Untrained operators are not qualified to use the machine.

Follow all safety instructions exactly. Safety is everyone's business. By following recom-mended procedures, a safe working environ-ment is provided for the operator, bystanders and the area around the work site. Untrained operators are not qualified to operate the ma-chine.

Many features incorporated into this machine are the result of suggestions made by custom-ers like you. Read this manual carefully to learn how to use the Backhoe safely and how to set it to provide maximum field efficiency. By following the using instructions in conjunction with a good maintenance program, your Backhoe will provide many years of trouble-free service.

4.1 TO THE NEW OPERATOR OR OWNER

OPERATING SAFETY1. Please remember it is important that you read

and heed the safety signs on the Backhoe.2. Always use the drawbar anchor bracket when

mounting a Backhoe to tractor. Adjust to prevent Backhoe from moving when digging.

3. Attach the tractor side plate to reinforce the frame if required. Do not overload the tractor frame.


5. Never operate controls from the ground. Op-erate only from the operator's seat to prevent unexpected boom movement that can lead to crushing between frame members.



8. Do not exceed machine lift capacity. Overload-ing can cause structural damage and lead to unsafe operating conditions.

9. Position Backhoe so that loads extend directly behind machine when lifting or placing heavy objects.


11. Never place any part of your body where it would be in danger if movement should oc-cur during assembly, installation, operation, maintaining, repairing, removal or moving.

12. Do not walk or work under a raised machine or attachment unless it is securely blocked or held in position. Do not depend on the trac-tor hydraulic system to hold the machine or attachment in place.


14. Before you operate the machine, check over all hydraulic lines, hoses, connections and components. Replace any worn or damaged parts immediately. Tighten all leaking fittings.

15. Do not allow anyone who is not familiar with the safety rules and operation instructions to use this machine. Review safety instructions annually.

Wallenstein backhoes have been designed to operate at a flow rate specification of 5-7 gpm (18.9-26.5 lpm). Equipment that has a flow rate higher than the specification must have the # BFC501 Flow Divider Kit installed. Operating the backhoe above

5-7 gpm (18.9-26.5 lpm) will cause damage to the seals and will void the warranty.

21

4.2 MACHINE COMPONENTSThe Wallenstein Backhoe Attachment attaches to a 3 point hitch or subframe of a small Agri-cultural or compact tractor. The Backhoe can also be mounted on a skid steer. The main frame mounts to the 3 point hitch or subframe and includes the controls and operator's seat. Stabilizers extend down from the main frame to provide a stable work platform.

Using a 3 Point Hitch will put strain on the top link of the tractor. Use only on a tractor with a top link strong enough to handle the load.

Power to operate the hydraulics is provided by the tractor hydraulics. The hydraulic controls are mounted on top of the main frame.

An optional hydraulic pump and oil reservoir is available to mount to the tractor PTO and provide power to the backhoe if the tractor does not have an appropriate hydraulic system.

An optional subframe is available for attaching to a smaller tractor if it is not equipped with a 3 point hitch. An optional subframe is available to mount along each side of the tractor as a reinforcement if required. Contact Wallenstein for the exact attaching kit for your tractor.

A Main FrameB BoomC DipperD BucketE StabilizersF Hydraulic PumpG Oil ReservoirH ControlsJ SeatK 3 Point HitchL Hitch Mounting SubframeM Side Reinforcing Subframe

Fig. 1 MACHINE COMPONENTS

22

4.3 MACHINE BREAK-INAlthough there are no operational restrictions on the Backhoe when used for the first time, it is recommended that the following mechanical items be checked:

A. After operating for 1/2 hour:

1. Check all nuts, bolts and other fasteners. Tighten to their specified torque.

2. Check that the bucket is in good condition and pinned securely to the dipper.

3. Check the condition of all hydraulic lines, hoses and fittings. Replace any that are damaged. Re-route those that are rub-bing, pinched or crimped. Tighten any fitting that is leaking.

4. Check the condition of the teeth on the bucket. Replace any that are bent, chipped, broken or missing.

5. Check the oil level in the hydraulic reser-voir if so equipped. Add as required.

6. Check the boom, dipper and bucket pivot pins. Be sure all are anchored securely in position.

7. Lubricate all grease points.

B. After operating for 5 and 10 hours:

1. Repeat steps 1 through 7 of Section A.

2. Then go to the regular service schedule as defined in Section 5.

3. Go to the normal servicing and mainte-nance schedule as defined in the Mainte-nance Section.

4.4 PRE-OPERATION CHECKLIST

Efficient and safe operation of the Backhoe re-quires that each operator reads and understands the operating procedures and all related safety precautions outlined in this section. A pre-oper-ation checklist is provided for the operator. It is important for both the personal safety and main-taining good mechanical condition that this check-list is followed.

Before operating the machine and each time thereafter, the following areas should be checked off:

1. Lubricate the machine per the schedule out-line in Section 5 Service and Maintenance.

2. Use only a tractor of adequate power and weight to operate the machine.

3. Check that the machine is properly attached to the tractor. Be sure retainers are used on the mounting pins and mounting hardware is tightened to their specified torque.

4. Check the oil in the reservoir if so equipped. Add as required.

5. Check the condition of all hydraulic lines, hoses and fittings. Replace any that are damaged. Re-route those that are rubbing, pinched or crimped. Tighten any fitting that is leaking.

6. Check the condition of the teeth on the bucket. Replace any that are bent, chipped, broken or missing.

7. Check all parts for entangled material. Re-move entangled material.

8. Install and secure all guards, doors and cov-ers before starting.

23

4.5 EQUIPMENT MATCHING

To insure the safe and reliable operation of the Back-hoe, it is necessary to match the backhoe with the machine (tractor or skidsteer). Consult your owners manual for machine specifications and use the follow-ing list as a guide to ensure your machine matches the backhoes requirements.

1. Horsepower: Horsepower of the equipment establishes the size of the backhoe, type of 3 point hitch and weight of the machine for optimum stability during operation. Stay within the backhoe HP power specification range.

2. Hydraulic Flow: Wallenstein backhoes have been designed to operate at a flow rate specification of 5-7 gpm (18.9-26.5 lpm). Machines that have a flow rate higher than the specification must have the # BFC501 Flow Divider Kit installed. Operating the backhoe above 5-7 gpm (18.9-26.5 lpm) will cause damage to the seals and controls and will void the warranty.

3. Tractor Weight: By following the recommenda-tions for the tractor HP, the tractor will have suf-ficient weight to provide stability for the unit when transporting. It is also recommended that each tractor be equipped with a front end loader or a full complement of suitcase weights on the front of the tractor. This will provide the required weight on the front for transport stability or to counter-balance the dynamic loads during operation.

4. 3 Point Hitch: The Backhoe is equipped with a Category I or I and II 3 point hitch depending on the model. Be sure the tractor 3 point hitch is in the proper configuration. Refer to the tractor manual for details. Be sure tractor top link is strong enough to handle load.

Fig. 2 3 POINT HITCH (typical)

Table 1: Model vs. Tractor Horsepower

Model Recommended Tractor Horsepower

GX620 20 - 35

GX720 30 - 55

GX920 45 - 90

5. Subframe: For small tractors without a 3 point hitch, subframes that attach to the rear of the tractor provide a mounting frame for the backhoe.

• The subframe that attaches to the rear of the tractor is called a 4 point mount-ing system.

• The subframe that has a frame that extends along the side of the frame is called the belly mount.

6. Skid Steer Tieback: An adaptor plate called a tieback is used to mount a Wallenstein backhoe to a skid steer. The tieback mounts to the backhoe, allowing the back hoe to be attached to the skidsteer.

7. PTO Shaft (Optional Hydraulic Unit): The tractor must have a 1 1/3 inch 6 spline 540 RPM PTO shaft to fit the pump drive coupler available with the kit. Do not use shaft adapt-ers or operate at any other speed.

It is not recommended that tractors with vari-able speed PTOs be used on the Backhoe. Operating at speeds faster than 540 RPM will overspeed the pump and lead to early failures.

24

4.6 CONTROLSAll controls on the Backhoe are mounted on top of the main frame within easy reach of the operator sitting in the seat. It is recommended that all operators review this section of the manual to familiarize themselves with the location and function of all machine controls before starting.

BUCKETOPEN

BUCKETCLOSED

DIPPER BOOMUP

DIPPER BOOMDOWN

LEFTSTABILIZER

UP

LEFTSTABILIZER

DOWN

RIGHTSTABILIZER

UP

RIGHTSTABILIZER

DOWN

SWINGLEFT

SWINGRIGHT

BOOMDOWN

BOOMUP

Tel: 519-632-9200 • Fax: 519-632-8299TOLL FREE: 1-800-561-4371e-mail: [email protected]

Z94035

Fig. 4 HYDRAULIC CONTROLS

1. Hydraulic Valve Levers: All hydraulic control valves are mounted on top

of the main frame. The two middle levers control the position of the stabilizers and the outer joy sticks control the function of the boom, dipper and bucket.

a. Left Lever - Boom Position: This 4 position spring-loaded-to-neutral-

center lever (joy stick) controls the angular position of the boom. Move and hold the lever to the left to swing the boom to the left. Move and hold the lever to the right to swing the boom to the right. Push and hold the lever to extend the boom. Pull and hold the lever to pull the the boom toward the main frame. Release the lever to stop the motion of the boom and it will stay in position.

b. Left Center Lever - Left Stabilizer Postion: This 2 position spring-loaded-to-neutral-cent-

er lever controls the flow of oil to the left stabilizer cylinder. In its centered position, the stabilizer does not move. Push and hold to lower the left stabilizer to the desired position. Release the lever to stop the stabilizer movement. Pull and hold the lever to raise the left stabilizer. Release the lever when the stabilizer is in its desired position.

c. Right Center Lever - Right Stabilizer Posi-tion:

This 2 position spring-loaded-to-neutral-center lever controls the flow of oil to the right stabilizer cylinder. In its centered position, the stabilizer does not move. Push and hold to lower the right stabilizer to the desired position. Release the lever to stop the stabilizer movement. Pull and hold the lever to raise the right stabilizer. Release the lever when the stabilizer is in its desired position.

d. Right Center Lever - Outer Boom and Bucket Position:

This 4 position spring-loaded-to-neutral-center lever (joy stick) controls the position of the

dipper, boom and bucket. Move and hold the lever to the left to close the bucket. Move and hold the lever to the right to open the bucket. Push and hold the lever to extend or raise the dipper boom. Pull and hold the lever to retract or lower the dipper boom. Release the lever to stop the motion of the dipper boom and the bucket and they will remain in their position.

a b c d

BUCKETOPEN

BUCKETCLOSED

DIPPER BOOMUP

DIPPER BOOMDOWN

LEFTSTABILIZER

UP

LEFTSTABILIZER

DOWN

RIGHTSTABILIZER

UP

RIGHTSTABILIZER

DOWN

SWINGLEFT

SWINGRIGHT

BOOMDOWN

BOOMUP


Z94035

BUCKETOPEN

BUCKETCLOSED

DIPPER BOOMUP

DIPPER BOOMDOWN

LEFTSTABILIZER

UP

LEFTSTABILIZER

DOWN

RIGHTSTABILIZER

UP

RIGHTSTABILIZER

DOWN

SWINGLEFT

SWINGRIGHT

BOOMDOWN

BOOMUP


Z94035

BUCKETOPEN

BUCKETCLOSED

DIPPER BOOMUP

DIPPER BOOMDOWN

LEFTSTABILIZER

UP

LEFTSTABILIZER

DOWN

RIGHTSTABILIZER

UP

RIGHTSTABILIZER

DOWN

SWINGLEFT

SWINGRIGHT

BOOMDOWN

BOOMUP


Z94035

BUCKETOPEN

BUCKETCLOSED

DIPPER BOOMUP

DIPPER BOOMDOWN

LEFTSTABILIZER

UP

LEFTSTABILIZER

DOWN

RIGHTSTABILIZER

UP

RIGHTSTABILIZER

DOWN

SWINGLEFT

SWINGRIGHT

BOOMDOWN

BOOMUP


Z94035

25

2. Flow Control Valve: This dial sets the flow control valve that

controls the amount of oil to the boom swing circuit. Turn the dial clockwise to reduce the amount of oil flow and slow the speed of the boom swing. Turn the dial counterclockwise to increase the speed of the boom swing.

Fig. 5 FLOW CONTROL (Boom Swing Speed)

Flow Control Divider

Flow Control Graphic

26

4.7 PREPARATION AND ASSEMBLY

The backhoe(s) can be mounted to a wide va-riety of models and makes of tractors with dif-ferent features and configurations. However mounting of adaptors and other brackets must be performed on the tractor prior to hooking up the backhoe.

4.7.1 CENTER LINK AND STRUT (On 3 Point Hitch Models)

The best performance is obtained when the bot-tom of the frame is set 13 inches (330mm) above the ground. The weight and dynamic loads from the backhoe must be transmitted through the lower links of the 3 point hitch, the top adjustable bracket and adjustable strut.

It is necessary to install the components and check that the backhoe frame is at the recom-mended height.

To prepare the tractor and backhoe, follow this procedure:

1. Make sure that all bystanders, especially small children are clear of the work area.

2. Stop engine, set park brake, remove igni-tion key and wait for all moving parts to stop.

3. Position center frame next to backhoe and lay out fasteners.

4. Install fasteners on both sides.

5. Tighten fasteners to their specified torque.

Fig. 6 CENTER FRAME

Center Frame Lay-Out

Left

Right

Installed

27

6. Remove drawbar anchor bracket.

7. Mount anchor bracket to the tractor draw-bar.

8. Tighten fasteners to their specified torque.

9. Check that the center link and support strut position the frame 13 inches (330mm) above the ground.

a. Mount backhoe to tractor.

b. Use the adjusting holes in the center link to provide the required frame height. Tighten fasteners to their specified torque.

c. Use the turnbuckle to set the length of the support strut. Use the jam nut to lock the turnbuckle.

Fig. 7 ANCHOR BRACKET

Bracket

Installed

Adjusting Holes

Turnbuckle

Frame Height

Fig. 8 LENGTHS

Wallenstein backhoes have been designed to rigidly attach to the frame of the tractor / skidsteer, to

prevent unwanted movement while operating the backhoe. Operating the tractors hydrau-lic 3 point hitch or bucket/loader controls on a skidsteer while the backhoe is at-tached should be avoided and will cause damage to the tractor sub frame / skidsteer

tieback.

28

4.7.2 BELLY MOUNT SYSTEM

The backhoe can be mounted to smaller, low horsepower tractors and provide excellent per-formance. Dynamic loading during operation can introduce high structural loads into the trac-tor frame. A reinforcing frame can be installed on each side to provide extra support. Contact your dealer or the factory for details on the re-inforcing kit for your specific tractor.

When mounting reinforcing kit follow this proce-dure and the instructions provided with the kit:

1. Be sure that all bystanders, especially small children are clear of the work area.


3. Lay out reinforcing kit.

4. Slide the frame under the tractor.

5. Mount the anchor bracket to the tractor frame. Add the spacer if required.

6. Raise the front of the frame and attach to the anchor bracket.

7. Raise the rear of the frame and attach to tractor.

8. Tighten all fasteners to their specified torque.

9. Always use tractor toplink with belly-mounted subframe (tractor to backhoe - fits below seat.).

Fig. 9 KIT LAY-OUT (typical)

Frame

Mounted

NOTEKits are available to fit your specific tractor. Use only the kit designed for your tactor.

29

4.7.3 4 POINT MOUNTING SYSTEM

Smaller tractors are not normally designed with an appropriate 3 point hitch for mounting a back-hoe. A specific kit is available that attaches to the rear of the tractor and front of the backhoe that allows for mounting. Contact your dealer or the factory for the kit appropriate for your tractor

When mounting attaching frame, follow this procedure:

1. Review instructions provided with the sub-frame kit.

2. Clear the area of bystanders, especially small children before starting.


4. Lay out the frames that mount to the back of the tractor and the front of the backhoe.

5. Mount the adapter frame to the back of the tractor:

a. Position the frame against the back of the tractor.

b. Secure with mounting bolts and tighten to their specified torque.

6. Mount the adapter frame to the back of the backhoe:

a. Position the adapter frame against the back of the backhoe frame.

b. Secure with mounting bolts and tighten to their specified torque.

Fig. 10 LAY-OUT

Fig. 11 TRACTOR ADAPTER

Fig. 12 BACKHOE ADAPTER

30

4.7.4 AUXILIARY HYDRAULIC SYSTEM

Some tractors are not equipped with a hydraulic system that can be used to power the backhoe. An optional aux-iliary hydraulic system is available and can be mounted to the backhoe.

When mounting the auxiliary hydraulic system, follow this procedure:

Fig. 13 LAY-OUT

1. Clear the area of bystanders, especially small children before starting.

2. Lay out the auxiliary hydraulic system.

3. Mount the oil reservoir to the backhoe frame:

a. Move the tank into position.

b. Install mounting bolts.

c. Tighten mounting bolts to their spec- fied torque.

NOTEBe sure the mounting adapter is attached to the backhoe.

Positioning

Mounting

Mounted

Fig. 14 OIL RESERVOIR

31

Fig. 15 COUPLER REMOVED

4. Remove the couplers from the hose ends.

5. Wrap the threads with teflon tape to prevent leaks.

6. Connect the input (high-pressure) line to the pump outlet. Tighten to its specified torque.

7. Connect the return (low-pressure) line to the filter head.

8. Fill the reservoir with 3 gallons (11 l) of the

Fig. 16 RETURN LINE

NOTEThe line is long. Form it into a loop(s) and secure with tape, clips or plastic ties.

specified oil.

9. Install the reservoir cover. Fig. 17 FILLING

Fig. 18 COVER

32

4.8 ATTACHING / UNHOOKING TRACTOR

The machine is shipped from the factory in a basic, universal configuration that allows it to be mounted to any model tractor with the ap-propriate mounting kit. This section will cover the mounting of some typical kits. Contact your dealer or the factory for more details about your specific model.4.8.1 MOUNTING

The Backhoe should always be located on a level, dry area that is free of debris and other foreign objects. When attaching the Backhoe to the tractor, follow this procedure:


2. Make sure there is enough room and clear-ance to safely back up to the Backhoe.

3. Stop close enough so the hydraulic lines can reach the couplers on the tractor.

4. Attach the hydraulic system:

a. Use a clean rage or paper towel to clean dirt from around the coupler on the hose end and on the tractor.

b. Connect the hose to the tractor coupler. Be sure the coupler is securely sealed.

IMPORTANTBe sure to connect to the circuit that has a detent to allow for the steady flow of oil.

Fig. 19 MACHINE

Fig. 20 HYDRAULIC LINES

Wallenstein backhoes have been designed to operate at a flow rate specification of 5-7 gpm (18.9-26.5 lpm). Equipment that has a flow rate higher than the specification must have the # BFC501 Flow Divider Kit installed. Operating the backhoe above 5-7 gpm

(18.9-26.5 lpm) will cause damage to the seals and will void the warranty.

Wallenstein backhoes have been designed to rigidly attach to the frame of the tractor / skidsteer, to prevent unwanted movement while operating the backhoe. Operating the tractors hydraulic 3 point hitch or bucket/loader controls on a skidsteer while the

backhoe is attached should be avoided and will cause damage to the tractor sub frame / skidsteer tieback.

33

5. Start the tractor engine. set parking brake, set the throttle at its mid-range and place hydrau-lic lever in detent.

6. Use the controls to raise the backhoe frame to match the tractor mounting points.

7. Raise each stabilizer in turn along with the dipper / bucket to raise the frame. Raise a lit-tle each time to keep the frame level.

8. Raise until the mounting brack-ets align with the 3 point hitch lower links.

Stored

Fig. 21 FRAME RAISING

Frame Raised

Aligned

34

9. Install the pins and retainers through the lower links.

a. Right.

b. Left.

10. Install the pin and retainer through the top link.

Right

Fig. 22 PINS AND RETAINERS

Left

Fig. 23 TOP LINK PIN

Fig. 24 SUPPORT STRUT

11. Install the center support strut. Install the pins and retainers through each end.

NOTEIt may be necessary to move the dipper / bucket to align the holes.

35

12. Retract the boom / bucket and stabilizers.

13. Carefully use the controls to set the bottom of the frame 13 inches (330 mm) above the ground.

Mounted

Fig. 25 HEIGHTRaised

IMPORTANTIf the top link and strut do not support the frame at this height, they need to be re-adjusted so they do.

14. Reverse the above procedure when un-hooking. Be sure to place planks under the stabilizers and bucket for added support.

(330 mm)

36

4.8.2 OPTIONAL HYDRAULIC PUMP

Pump Installed

Fig. 26 POSITIONED

Anchor Chain

Fig. 27 PUMP MOUNTING

The Backhoe should always be located on a level, dry area that is free of debris and other foreign objects. When attaching the Backhoe with the optional hydraulic pump to the tractor, follow this procedure:


2. Make sure there is enough room and clear-ance to safely back up to the Backhoe.

3. Stop close enough so the length of the hy-draulic lines allow the pump to be mounted to the tractor. Set the park brake and remove the ignition key.

4. Retract the lock pin and slide the pump over the PTO shaft. Be sure the lock pin seats in the groove. Pull on the pump to be sure.

5. Attach the anchor chain to a part of the frame to prevent the pump from turning.

6. Start the tractor, set park brake and engage the PTO. Set the throttle at mid-range. This will provide oil to the hydraulic system on the backhoe.

37

7. Use the backhoe con-trols to set and move the height of the frame.

8. Move the dipper / buck-et and the stabilizers in small movements to align the backhoe mounting brackets with the pins on the tractor.

Fig. 28 CONTROLS

Fig. 29 MOUNTING PINS

38

9. Back the tractor until the mounting brackets align with the tractor. Move the frame up as required to engage the brackets around the pins.

10. Install the mounting pins and their retainers through the anchor brackets.

Fig. 30 ATTACHING

Aligning

Pin (typical)

Mounting Pin

39

Mounted

Raised

Fig. 31 ATTACHED

11. Raise the boom, raise dipper, retract bucket and raise stabi-lizers.

12. Reverse the above proce-dures when unhooking a backhoe that is equipped with an optional PTO kit.

NOTEIt is recommended that planks be placed under the stabilizers and bucket for added support.

40

4.8.3 MOUNTING TO SKID STEER

The Backhoe can be mounted to a skid steer loader if it is equipped with the appropriate tieback mounting kit. The remote hydraulic outlet must be located at the end of the loader arms to provide pressurized oil to the backhoe.When mounting to a skid steer, follow this procedure:

1. Clear the area of all bystanders, especially small children.

2. Mount the face plate attaching frame to the back of the backhoe frame.

3. Tighten fasteners to their speci-fied torque.

4. Mount anchor frame to the front of the skid steer frame.

5. Tighten fasteners to their speci-fied torque.

Frame

Attached

Fig. 32 FACE PLATE ATTACHING FRAME

Fig. 33 ANCHOR FRAME

41

Coupler

Connected

Fig. 35 HYDRAULICS

Fig. 34 ALIGNING

6. Drive up to the backhoe while aligning the mounting compo-nents.

7. Connect the hydraulics:

a. Use a clean rag or paper towel to clean the dirt from the couplers on the hose ends and the skid steer.

b. Connect the hoses to the skid steer couplers. Be sure the couplers are securely seated.

c. Route and secure the hoses along the frame with clips, tape or plastic ties to pre-vent binding and pinching. Be sure to provide slack for tilting.

Wallenstein backhoes have been designed to operate at a flow rate specification of

5-7 gpm (18.9-26.5 lpm). Equipment that has a flow rate higher than the specification must have the # BFC501 Flow Divider Kit installed. Operating the backhoe above 5-7 gpm (18.9-26.5 lpm) will cause damage to the seals and will void the warranty.

42

Moving

AlignmentFig. 36 FACE PLATE

8. Start the skid steer and place the hydraulic system in detent to supply oil to the coupler.

9. Climb on the backhoe and use the controls to raise the frame if required to allow the skid steer face plate to mate with the backhoe.

10. Drive the skid steer forward and mate the loader face plate into the backhoe.

11. Lift the frame slightly when the face plate is mated to the backhoe.

12. Lock the pins.

Lifted

Locked

Fig. 37 ATTACHED

43

13. Mount the support turnbuckles between the skid steer and mounting frame.

14. Install anchor pins and retainers.

15. Be sure that they are the same length to equalize the loading. Measure to be sure.

16. Raise the stabilizers, boom, dipper and bucket.

17. Reverse the above proce-dure when unhooking.

18. Place planks or boards un-der the bucket, frame and stabilizers for extra support if required.

Turnbuckles

Pins and Retainers

Fig. 38 SUPPORT TURNBUCKLES

Fig. 39 MOUNTED



tieback.

44

4.9 FIELD OPERATION

Follow this procedure when using the Backhoe:

1. Prepare the tractor and Backhoe (refer to sec-tion 4.7)

2. Attach Backhoe to the tractor (refer to Section 4.8).

3. Review and follow the pre-operation check-lists (refer to Section 4.4).

4. Review the location and function of all con-trols (refer to Section 4.5)

5. Review the work site and plan the project before starting.

OPERATING SAFETY1. Please remember it is important that you

read and heed the safety signs on the Back-hoe.

2. Always use the center anchor bracket when mounting a Backhoe to tractor. Adjust to prevent Backhoe from moving when digging.

3. Attach the tractor side plate to reinforce the frame if required. Do not overload the trac-tor frame.


5. Never operate controls from the ground. Operate only from the operator's seat to pre-vent unexpected boom movement that can lead to crushing between frame members.



8. Do not exceed machine lift capacity. Over-loading can cause structural damage and lead to unsafe operating conditions.

9. Position Backhoe so that loads extend directly behind machine when lifting or plac-ing heavy objects.


11. Never place any part of your body where it would be in danger if movement should oc-cur during assembly, installation, operation, maintaining, repairing, removal or moving.

12. Do not walk or work under a raised machine or attachment unless it is securely blocked or held in position. Do not depend on the tractor hydraulic system to hold the ma-chine or attachment in place.


14. Before you operate the machine, check over all hydraulic lines, hoses, connec-tions and components. Replace any worn or damaged parts immediately. Tighten all leaking fittings.

14. Do not allow anyone who is not familiar with the safety rules and operation instructions to use this machine. Review safety instruc-tions annually.

6. Transport the Backhoe to the worksite (refer to Section 4.10).

Wallenstein backhoes have been designed to operate at a flow rate specification of 5-7 gpm (18.9-26.5

lpm). Equipment that has a flow rate higher than the specification must have the # BFC501 Flow Divider Kit installed. Operat-ing the backhoe above 5-7 gpm (18.9-26.5 lpm) will cause damage to the seals and will void the warranty.

45

7. Training: Each operator must be trained in

the proper operating procedures prior to being allowed to operate the machine.

a. Review control location, function and movement directions.

b. Move the unit to a large open area to allow the operator to become familiar with control function and machine re-sponse.

c. When a new operator is familiar and comfortable with the machine, they can proceed with the work. Do not allow untrained operators to use the machine. They can endanger themselves and others or damage property and the machine.

8. Job Site: It is the responsibility of the operator to be

thoroughly familiar with the work site prior to starting. Prevent the chance or possiblity of problems or accidents by not being in the situ-ation to start with. Some items the operators should check include but are not limited to:

a. Underground wires, cables, pipes or other obstructions if digging. Contact your local utility to identify exactly the location of the lines, pipes, etc. Turn off, disconnect, etc. as required to prevent a problem if contact is made.

b. Overhead power lines, obstructions or overhangs. Power lines can lead to electrocution if the machine gets too close without contacting the line. Overhead obstructions can cause a loss of control or tipping from the contact. Overhangs can collapse or give way covering the machine or causing it to move as the footing gives way.

c. Close or cramped work site. Be sure there is sufficient space and clearance for the machine to dig, swing and dump while working. If the working area is cramped, modify the work site to provide more area. Unplanned contact with adjacent build-ings, equipment or terrain can cause the operator to lose control of the machine leading to injury or damage to buildings or equipment

d. Working Lay-Out: Organize the work site to minimize the

distance the support equipment has to travel between digging and dumping. The shorter the travel distance the faster the dig / dump cycle will be and the more that can be done.

e. Prevailing Winds: Set-up the work site so the prevailing

winds will blow dust, dirt, straw, chaff, de-bris, snow, etc. away from the air intakes for the engine and cooling system. As a result, there will be less need to clean these systems and more time can be spent working.

f. Smooth the Surfaces: A rough surface will require slow speeds

of support equipment while working. Smoothing the surface prior to starting to work will shorten the work cycle and result in higher productivity.

Fig. 40 TRAINING

46

9. Machine Placement: It is the responsibility of the operator to review

the work site layout and how to best position the machine. Items to consider include but are not limited to:

a. Working Inside a Building: Some jobs require that the backhoe be op-

erated inside a building. The machine can be operated inside a building providing that the engine exhaust is piped outside and/or there is adequate ventilation. Gas and diesel engines produce carbon mon-oxide that can asphyxiate operators and bystanders if not supplied with fresh air. Do not take chances with carbon monox-ide poisoning.

b. Bystanders: Do not place the backhoe where there will

be any bystanders, on-lookers or unau-thorized personnel. Stop the machine whenever unauthorized personnel enter the working area. Unauthorized personnel can get in the way or get pinched / caught by components. Do not resume work until the unauthorized people have left.

c. Slopes: Slopes have

special placement requirements when locating the ma-chine. The ma-chine is designed to carry the operat-ing loads when the frame is vertical. Nornally this can be set by the stabilizer extension length. Large blocks or planks can be placed under the low stabilizer to assist in setting the frame angle.

Swing the boom up the slope when dumping the bucket to minimize the chance of tipping. Al-ways keep the bucket close to the ground when swinging the boom to reduce tipping loads.

Fig. 41 STABILIZER

47

10. Park the tractor / backhoe at its appro-priate location and lower the loader to the ground (if so equipped).

11. Set the park brake.

12. Starting:

a. Start the tractor engine (refer to tractor manual).

b. Place hydraulic circuit in detent or engage PTO clutch (refer to tractor manual).

c. Increase engine speed to mid-range or rated PTO RPM.

d. Dismount from the tractor.

IMPORTANTLower the stabilizer until a portion of the weight of the tractor is sup-ported by the stabilizer to provide extra stability.

e. Mount the backhoe and sit in the opera-tor's seat.

f. Remove the boom swing and extend lock pins and stow.

g. Use the center hydraulic levers to extend the stabilizers and support the frame.

a. Swing b. Extend

Fig. 42 LOCK PINS

Extending

Fig. 43 STABILIZERSExtended

ba



tieback.

48

Fig. 44 STOPPING

14. Stopping:

a. Lower the dipper / bucket to the ground.

b. Place all controls in neutral.

c. If the machine will be moved to a new location, swing the boom into its straight posi-tion and fully retract boom to align lock pin brackets.

d. Install both lock pins and their retainers

e. If the machine is being moved to a new location, raise the stabilizers to their fully up position.

f. Dismount from the backhoe.

g. Mount the tractor and sit in its seat.

h. Slow the engine to idle.

i. Turn the hydraulic circuit to OFF or disen-gage the PTO clutch.

j. Shut off engine.

15. Emergency Stopping: In case of an emergency, lower the dipper /

bucket to the ground and stop engine. Be sure to resolve and correct the emergency situation before resuming work. Do not take chances in an emergency.

49

16. Stabilizers:

a. Always extend the stabilizers to set the frame level and vertical when placing the machine at the work site. Support the weight of the rear of the tractor on the stabi-lizers to eliminate the flexing of the tires during operation. Tire flexing will allow the frame to move if not fully supported on the stabiliz-ers. Movement can allow the for binding or pinching of the frame and reduce efficiency or cause mechanical problems.

b. Also use the stabilizers to set the angle when operating on a slope. Extend one stabilizer more than the other on a gradual slope. Place a large block or planks under the low side when on a steeper slope.

c. Do not excavate under the stabilizers. Removing soil from under a stabilizer can result in crumbling of the soil and collapse of the stabilizer / machine into the hole. Always know the soil shearing properties and provide sufficient area to carry the weight of the machine.

Fig. 45 STABILIZERS

17. Digging Action:

a. Digging With Dipper:

i. Set the bucket at the appropriate angle as shown by profile.

ii. Set the dipper so the bucket teeth hit the ground approximately 2 feet (0.6 m) ahead of pivot.

Fig. 46 DIGGING WITH ARM

iii. Retract the dipper to pull the bucket through the soil until it is full.

iv. Raise the boom and dump the bucket.

v. Repeat this procedure to continue digging by extending the bucket 3 to 6 inches (75 - 150 mm) further each time.

NOTEBe sure the dipper and bucket angles are set so that the heel of the bucket does not hit the bottom of the hole.

50

b. Digging With Bucket: This is the procedure recom-

mended when a vertical wall is desired at the end of a trench.

i. Set the bucket so the bucket teeth are nearly vertical.

ii. Use the boom to force the bucket into the ground.

iii. Use the boom to force the bucket further into the ground and at the same time roll the bucket back (curl) until it is full.

iv. Raise the boom and dump the bucket.

v. Continue to dig in the same way by digging 3 to 6 inches (75 to 150 mm) deeper each time.

c. Positioning:

i. Position the unit so the boom is centered behind the frame.

Fig. 47 DIGGING WITH BUCKET

Fig. 48 CENTERED

51

18. Trenching:

a. The backhoe works well for trech-ing. Use the arm or bucket method to dig.

b. Extend the trench between the sta-bilizers as far as it will go. Be sure not to undercut the stabilizers and create a cave-in. Be familiar with the reach and curl of the bucket.

19. Moving When Trenching: Follow this procedure when moving to

the next digging position:

a. Swing and dump the bucket. Be sure it is empty.

b. Retract the boom and bucket and tuck them up against the rear frame.

c. Raise both stabilizers.

d. Dismount and raise the seat.

e. Transfer to the tractor seat.

f. Slow the engine speed to idle.

g. Turn the hydraulic circuit off or disengage the PTO clutch and raise loader (if so equipped).

h. Engage the transmission and drive ahead a short distance.

i. Lower loader to the ground, set park brake and place hydraulic control in detent or engage PTO.

j. Increase speed mid-range PTO RPM.

NOTEDo not move too far ahead each time. Moving too far will exceed the reach of the bucket and the operator will not be able to form an even bottom.

Fig. 49 BUCKET REACH

Fig. 50 RETRACTED

52

20. Excavating: Use either the arm or the bucket digging

method to excavate the hole.

a. Be careful not to dig under the stabilizers. Undermining the stabilizer can cause the machine to fall into the hole.

b. Dump the bucket far enough away from the hole so the tailings do not fall back into the hole.

c. Use a truck with low sides when dumping the bucket.

21. Bucket Teeth: The bucket teeth can be replaced. Check on

their condition weekly. Replace if chipped, bent or damaged.

22. Loads: The backhoe can be used to lift and place

lines, pipes or other loads into trenches or excavations.

a. Do not exceed the lifting capacity of the backhoe. Review the capacity specs and do not overload.

b. Always position the tractor at right angles to the trench or excavation when moving loads.

c. Do not carry or lift people on the backhoe.

d. Do not swing loads over people when placing loads in trenches or excavations.

23. Swing Speed: All units are equipped with a flow divider dial

to control the boom swing speed if the tractor does not have a flow control. Turn clockwise to slow the swing speed and counterclock-wise to increase it.

Fig. 51 DUMPING

Fig. 52 TEETH

Fig. 53 SWING SPEED

Flow Control Divider

Flow Control Graphic

53

24. Thumbs (Optional): Backhoes can be equipped with an op-

tional thumb that is used as a back-stop when picking up something. Thumbs are available in a mechanical or hydrau-lic position version.

a. Mechanical Thumb: A kit is available that can be

mounted to the inside of the dip-per arm. Use the adjustment in the thumb and support arm to position the thumb as required. Be sure to install the retainers through the mounting pins.

b. Hydraulic Thumb: This kit is available to be mounted

to the inside of the dipper arm. Route the hydraulic lines along the dipper, boom and pivot points and secure with clips or ties. Use the control lever to position the thumb as required.

Fig. 54 THUMBS

Mechanical Kit

Installing

Hydraulic

54

Fig. 55 MOUNTING GEOMETRY

Fig. 56 STABILIZERS

Fig. 57 BACK-FILLING

25. Operating Hints:

a. Review work site before position-ing backhoe and starting work. Stay away from utility lines and obstructions.

b. Attach stabilizer bracket between top link anchor and frame. At-tach the support strut between the frame and drawbar to secure mounting linkage geometry. The frame should be 13 inches (330 mm) above the ground.

c. Do not allow untrained personnel to operate the machine.

d. Do not operate machine when unauthorized people are in work area. Stop until they leave.

e. Operate the machine only while sitting in the tractor or backhoe seat. Never operate controls while standing on the ground.

f. Extend stabilizers and support ma-chine to carry weight and loads.

g. Do not carry personnel on the boom or bucket.

h. Do not dig under stabilizers to prevent falling into excavation.

i. Keep hydraulic components and fit-tings on tight and in good condition.

55

TRANSPORT SAFETY• Comply with state and local laws govern-

ing safety and transporting of machinery on public roads.

• The use of flashing amber lights is accept-able in most localities. However some localities prohibit their use. Local laws should be checked for all highway lighting and marking requirements.

• At all times, when driving the tractor and equipment on the road or highway under 20 mph (32 kph) use flashing amber warning lights and a slow moving vehicle (SMV) identification emblem. Do not exceed 20 mph (32 kph). Reduce speed on rough roads and surfaces.

• Plan your route to avoid heavy traffic.

• Always install transport lock pins and re-tainers before transporting.

• Do not drink and drive.

• Be a safe and courteous driver. Always yield to oncoming traffic in all situations, including narrow bridges, intersections, etc. Watch for traffic when operating near or crossing roadways.

• Turn into curves or go up or down hills only at a low speed and a gradual steering angle. Make certain that at least 20% of the tractor's weight is on the front wheels to maintain safe steerage. Slow down on rough or uneven ground.

• Never allow riders on either tractor or ma-chine.

Fig. 58 TRANSPORT CONFIGURATION

Wallenstein Backhoes are designed to be easily and conveniently moved from work site to work site. When transporting, follow this procedure:

1. Be sure all bystanders are clear of the machine.

2. Be sure that the machine is hitched positively to the tractor and retainers are installed in each mounting pin.

3. Fully retract the boom and bucket.

4.10 TRANSPORTING

56

4. Install the boom swing and retract lock pins and secure with its retainer.

5. Keep to the right and yield the right-of-way to allow faster traffic to pass. Drive on the road shoulder, if permitted by law.

6. Make sure the SMV (Slow Moving Ve-hicle) emblem and all lights and reflec-tors required by the local highway and transport authorities are in place, are clean and can be seen clearly by all overtaking and oncoming traffic.

7. It is not recommended that the machine be transported faster than 20 mph (32 kph). Table 2 gives the acceptable transport speed as the ratio of tractor weight to backhoe weight.

Fig. 59 BOOM SWING AND RETRACT LOCK PINS

a. Swing b. Retract

Fig. 60 TRANSPORTING

8. Do not allow riders on the machine or tractor.

9. During periods of limited visibility, use pilot vehicles and use extra lights on the machine.

10. Always use hazard flashers on the trac-tor when transporting unless prohibited by law.

a.b.

57

STORAGE SAFETY• Store the unit in an area away from human

activity.

• Do not permit children to play on or around the stored machine.

• Store the unit in a dry, level area. Support the frame with planks if required.

4.11 STORAGE

After the season's use, the machine should be thor-oughly inspected and prepared for storage. Repair or replace any worn or damaged components to prevent any unnecessary down time at the start of the next season. To ensure a long, trouble-free life, this procedure should be followed when preparing the unit for storage:

1. Clear the area of bystanders, especially small children.

2. Thoroughly wash the machine using a pres-sure washer to remove all dirt, mud, debris and residue.

3. Inspect the bucket, dipper and boom for damage or entangled material. Repair or replace damaged parts. Remove all entan-gled material.

4. Check the oil in the optional reservoir (if so equipped). Add as required.

5. Lubricate all grease fittings. Make sure all grease cavities have been filled with grease to remove any water residue from washing.

6. Touch up all paint nicks and scratches to prevent rusting.

7. Move to storage area.

8. Select an area that is dry, level and free of debris.

9. Place blocks or planks under the stabilizers and bucket.

10. Unhook from tractor (See Section 4.8).

11. Stow hydraulic hoses in storage brackets to keep them off the ground.

4.11.1 PLACING IN STORAGE

Fig. 61 STORED

12. Apply a coat of heavy grease to exposed cylin-der rams to prevent rusting.

13. If the machine cannot be placed inside, cover with a waterproof tarpaulin and tie securely in place.

14. Store the machine in an area away from human activity.

15. Do not allow children to play on or around the stored machine.

58

4.11.2 REMOVING FROM STORAGE

When removing from storage and preparing to use, fol-low this procedure:

1. Clear the area of bystanders, especially small chil-dren and remove foreign objects from the machine and work area.

2. Attach the tractor to the backhoe by following the procedure in Section 4.8.

3. Check

a. Oil level in optional reservoir. Add as required.

b. All hardware. Tighten as required.

c. All hydraulic lines, fittings and connections. Tighten as required.

4. Lubricate all grease fittings.

5. Remove grease from cylinder rams.

6. Replace any defective parts.

7. Go through the pre-operation checklist (section 4.4) before using.

59

MAINTENANCE SAFETY

• Good maintenance is your responsibility. Poor maintenance is an invitation to trouble.

• Follow good shop practices.

- Keep service area clean and dry. - Be sure electrical outlets and tools are properly grounded. - Use adequate light for the job at hand.

• Make sure there is plenty of ventilation. Nev-er operate the engine of the towing vehicle in a closed building. The exhaust fumes may cause asphyxiation.

• Before working on this machine, shut off the engine, set the brake, and turn fuel valve off.

• Never work under equipment unless it is blocked securely.

• Always use personal protection devices such as eye, hand and hearing protectors, when performing any service or main-tenance work. Use heavy gloves when handling sharp components.

• Where replacement parts are necessary for periodic maintenance and servicing, genuine factory replacement parts must be used to restore your equipment to original specifications. The manufacturer will not be responsible for injuries or damages caused by use of unapproved parts and/or acces-sories.

• A fire extinguisher and first aid kit should be kept readily accessible while performing maintenance on this equipment.

• Periodically tighten all bolts, nuts and screws and check that all electrical and fuel connections are properly secured to ensure unit is in a safe condition.

• When completing a maintenance or service function, make sure all safety shields and de-vices are installed before placing unit in serv-ice.

5 SERVICE AND MAINTENANCE5.1 SERVICE

5.1.1 FLUIDS AND LUBRICANTS

1. Grease: Use an SAE multipurpose high temperature

grease with extreme pressure (EP) perform-ance. Also acceptable is an SAE multipur-pose lithium base grease.

2. Engine Oil: Use SAE Heavy Duty hydraulic oil for all oper-

ating conditions.

Reservoir capacity: 3 U.S. gallons (11 liters)

3. Your machine can operate at top efficiency only if clean lubricants are used. Use clean containers to handle all lubricants. Store them in an area protected from dust, moisture and other contaminants.

5.1.2 GREASING

Use the Maintenance Checklist provided to keep a record of all scheduled maintenance.

1. Use a hand-held grease gun for all greasing.

2. Wipe grease fitting with a clean cloth before greasing, to avoid injecting dirt and grit.

3. Replace and repair broken fittings immedi-ately.

4. If fittings will not take grease, remove and clean thoroughly. Also clean lubricant pas-sageway. Replace fittings if necessary.

60

5.1.3 SERVICING INTERVALS

The period recommended is based on normal oper-ating conditions. Severe or unusual conditions may require more frequent lubrication or oil changes.

8 Hours or Daily

1. Grease the pivot pins.

a. Bucket pivots.

b. Dipper / Boom pivots.

c. Boom pivots.

d. Steering cylinder pivots.

e. Left stabilizer.

Fig. 62 PIVOT PINS

Dipper / Bucket

Boom Swing

Left Stabilizer

a

b

c

d

e

a

b

b

b

c

c

c

dd

e

e

e

e

61

Fig. 64 BOOM SWING CYLINDER PIVOT PINS

Fig. 62 PIVOT PINS

Right Stabilizer

Boom

f. Right Stabilizer.

g. Boom Pivots.

2. Grease the boom swing cylinder pivot pins.

g g g

f

f

f

f

62

Fig. 65 CYLINDER RAMS (Typical)

3. Grease the pivot pins.

a. Bucket.

b. Dipper.

c. Boom.

d. Boom swing.

e. Stabilizers.

40 Hours

1. Check oil level in optional reservoir. Add as required.

Fig. 66 OIL LEVEL

63

Fig. 67 OIL SCREEN

Fig. 68 OIL DRAIN PLUG

100 Hours

1. Clean optional hydraulic sys-tem screen.

1000 Hours

1. Change optional hydraulic system oil.

64

Annually

1. Wash and clean machine.

Fig. 69 MACHINE

GX 920

GX 620

65

5.1.4 SERVICE RECORD

See Lubrication and Maintenance sections for details of service. Copy this page to continue record.

ACTION CODE CK CHECK CL CLEAN G GREASE CH CHANGE

HOURS SERVICED BY

MAINTENANCE

8 Hours or Daily G Bucket Pivots G Dipper / Boom Pivots G Boom Pivots G Left Stabilizers G Right Stabilizers CL Steering Cylinder Pivots

40 Hours CK Hydraulic System Oil Level*

100 Hours CL Hydraulic System Screen*

1000 Hours CH Hydraulic System Oil*

Annually CL Machine

* Optional Hydraulic System

66

5.2 MAINTENANCE

5.2.1 HYDRAULIC OIL

Every 1000 operating hours or annually, whichever comes first, the oil in the optional hydraulic system should be changed. To change oil, follow the procedure below:

1. Stop the engine and allow the system to cool to the touch.

2. Place a large container under the drain plug. More than one container may be re-quired since the tank holds 3 U.S. gallons (11 l.).

3. Remove the drain plug and allow the sys-tem to drain for 10 minutes.

4. Remove and clean hydraulic screen.

5. Install the drain plug using teflon tape or pipe sealant compound and fill the reservoir with a heavy duty hydraulic oil. System capacity is approximately 3 U.S. gallons (11 l.). Fill to within 1 inch (25 mm) from the top of the tank.

6. Start the engine and run for 3 minutes. Operate all systems to purge the lines of air and to check for leaks.

7. Check the oil level in the reservoir and top up as required.

Fig. 70 HYDRAULIC RESERVOIR

5.2.2 BUCKET TEETH

The bucket teeth are designed to be replaced. They should be checked weekly. They need to be replaced if bent, broken or worn out.

When replacing, follow this procedure:

1. Clear the area of bystanders, especially small children.

2. Lower dipper / bucket to the ground, place all controls in neutral, stop engine, set park brake, remove ignition key and wait for all moving parts to stop before dis-mounting.

3. Remove tooth / teeth that need replacing.

4. Install replacement tooth and weld in posi-tion.

Fig. 71 TEETH

67

Boom and bucket move slowly. Pump worn out. Replace pump.

Screen dirty or plugged. Clean or replace screen.

Low oil flow. Increase tractor RPM.

Flow control set too low. Open flow control to get more flow.

Low oil level. Check oil level. Add as required.

Machine jerks when moving. Screen dirty or plugged. Clean or replace screen.

Sucking air. Check fittings in hydraulic system. Tighten all fittings to stop air intake.

Low oil level. Check oil level. Add as required.

Flow (GPM) to high Check that flow (GPM) is be tween 5-7 gpm (18.9-26.5 lpm): install BFC501 kit.

Flow (GPM) to low Increase RPM for more consistent flow: Check that flow (GPM) is between 5-7 gpm (18.9-26.5 lpm)

Control levers do not return Return springs collapsed. Check valve return springs.to neutral. Replace any that have collapsed or are not as long as they should be.

System dirty. Change oil and clean screen.

Boom does not stay up. Cylinder seals leaking. Replace cylinder seals.

6 TROUBLE SHOOTINGThe Wallenstein Backhoe is designed to fit on the back of a small agricultural tractor and is used to dig, excavate and trench. It is a simple and reliable system that requires minimal maintenance.

In the following section, we have listed many of the problems, causes and solutions to the problems that you may encounter.

If you encounter a problem that is difficult to solve, even after having read through this trouble shooting section, please call your local distributor or dealer. Before you call, please have this Operator's Manual from your unit and serial number ready.

PROBLEM CAUSE SOLUTION

68

Model GX620 GX720 GX920 GX920XT

Transport Height 63" (1600 mm) 79" (2006 mm) 92" (2337 mm) 92" (2337 mm) Transport Width 40" (1016 mm) 42.5" (1079.5 mm) 42.5 (1079.5 mm) 42.5 (1079.5 mm) Ground Clearance 10.5" (266.7 mm) 10.5" (266.7 mm) 10.5" (266.7 mm) 10.5" (266.7 mm) Transport Length 68" (1727 mm) 80" (2032 mm) 81" (2057 mm) 81" (2057 mm) Transport Weight 575 lb (261 kg) 765 lb (347 kg) 791 lb (359 kg) 980 lb (444.5 kg) Digging Depth (2 Ft Flat Bottom) 6' 4" (1.9 m) 7' 8" (2.3 m) 9' 4" (2.8 m) 9'4"/11'4" (2.8 m/34.4 m) Overall Operating Height 92" (2337 mm) 119" (3022 mm) 135" (3429 mm) 135"/152" (3429/3861 mm) Loading Height (Bucket at 60°) 62" (1575 mm) 80" 2032 mm) 89" (2260 mm) 89"/104" (2260/2642 mm) Reach from Swing Post 100" (2540 mm) 123" (3124 mm) 141" (3581 mm) 141"/164" (3581/4166 mm) Bucket Rotation 180° 180° 180° 180° Swing Arc 180° 180° 180° 180° Stabilizer Width (Spread) 74" (1880 mm) 89" (2260 mm) 89" (2260 mm) 89" (2260 mm) Stabilizer Width (Transport) 40" (1016 mm) 42.5" (1079.5 mm) 42.5" (1079.5 mm) 42.5" (1079.5 mm) Operating Pressure 1800 psi (127 kg/cm2) 2250 psi (158 kg/ cm2) 2250 psi (158 kg/ cm2) 2250 psi (158 kg/ cm2) Dipper Boom Digging Force 1250 lb (567 kg) 2300 lb (1043 kg) 3200 lb (1052 kg) 3100/2200 lb (1406/998 kg) Bucket Digging Force 2600 lb (1179 kg) 3800 lb (1724 kg) 3925 lb (1780 kg) 3925 lb (1780 kg) Boom Lift Capacity 385 lb (175 kg) 925 lb (420 kg) 750 lb (340 kg) 710/580 lb (340/263 kg) Hydraulic Volume Reg. 5-7 gpm (18.9-26.5 lpm) 5-7 gpm (18.9-26.5 lpm) 5-7 gpm (18.9-26.5 lpm) 5-7 gpm (18.9-26.5 lpm) Recommended Tractor HP 15-25 HP 22-45 HP 45-100 HP 45-100 HP Recommended Skid Steer Size N/A 30-60 30-100 30-100 Bucket Sizes Available 9,12,15,18 9,12,15,18,24 9,12,15,18,25 9,12,15,18,24 Main Boom Cylinder Diameter 2.5" (63.5 mm) 3" (76 mm) 3" (76 mm) 3" (76 mm) All Other Cylinder Diameters 2.25" (57 mm) [dipper] 3" (76 mm) [dipper] 3" (76 mm) [dipper] 3" (76 mm)

* In Accordance with SAE J1179

7 SPECIFICATIONS7.1 MECHANICAL

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

Fig. 72 MECHANICAL SPECIFICATIONS

69

7.2 BOLT TORQUE

CHECKING BOLT TORQUE

The tables shown below give correct torque values for various bolts and capscrews. Tighten all bolts to the torques specified in chart unless otherwise noted. Check tightness of bolts periodically, using bolt torque chart as a guide. Replace hardware with the same strength bolt.

ENGLISH TORQUE SPECIFICATIONS

METRIC TORQUE SPECIFICATIONS

SAE 2(N.m) (lb-ft)

Bolt Torque*Bolt

Diameter"A"

SAE 5(N.m) (lb-ft)

SAE 8(N.m) (lb-ft)

1/4"5/16"3/8"7/16"1/2"9/16"5/8"3/4"7/8"1"

81327416195128225230345

6102030456095165170225

12254572110155215390570850

919335380115160290420630

1736631001552203055408801320

12274575115165220400650970

8.8(N.m) (lb-ft)

Bolt Torque*Bolt

Diameter"A"

10.9(N.m) (lb-ft)

M3M4M5M6M8M10M12M14M16M20M24M30M36

.5361025509014022543575014952600

.42.24718376610316632155311031917

1.84.59153570125200310610105021003675

1.33.371126529214822945077415502710

Torque figures indicated above are valid for non-greased or non-oiled threads and heads unless oth-erwise specified. Therefore, do not grease or oil bolts or capscrews unless otherwise specified in this manual. When using locking elements, increase torque values by 5%.

* Torque value for bolts and capscrews are identified by their head markings.

70

7.3 HYDRAULIC FITTING TORQUE

Tightening Flare Type Tube Fittings *

1. Check flare and flare seat for defects that might cause leakage.

2. Align tube with fitting before tighten-ing.

3. Lubricate connection and hand tighten swivel nut until snug.

4. To prevent twisting the tube(s), use two wrenches. Place one wrench on the connector body and with the second tighten the swivel nut to the torque shown.

• The torque values shown are based on lubricated connections as in

reassembly.

Tube Nut Size Torque Recommened Size Across Value• Turns To Tighten OD Flats (After Finger Tightening)

(in.) (in.) (N.m) (lb-ft) (Flats) (Turn)

3/16 7/16 8 6 1 1/6 1/4 9/16 12 9 1 1/6 5/16 5/8 16 12 1 1/6 3/8 11/16 24 18 1 1/6 1/2 7/8 46 34 1 1/6 5/8 1 62 46 1 1/6 3/4 1-1/4 102 75 3/4 1/8 7/8 1-3/8 122 90 3/4 1/8

71

7.4 HYDRAULIC OIL - MATERIAL SAFETY DATA

SECTION 1 - PRODUCT PREPARATION AND INFORMATION

PRODUCT INFORMATION

IDENTITY (TRADE NAME): DUAL PURPOSE TRACTOR HYDRAULIC FLUID

SYNONYMS: Hydraulic Tractor Fluid

PRODUCT CODE: 1503

FAMILY/CHEMICAL NAME: Petroleum Hydrocarbon

24 HOUR EMERGENCY TELEPHONE: 1-800-424-9300

MANUFACTURER/SUPPLIER: Superior Lubricants Company Inc. 32 Ward Road North Tonawanda, New York 14120 1-800-638-1887 (phone) 1-800-724-2162 (fax)

REVISION DATE: February 7, 2005

SECTION 2 - HAZARDOUS COMPONENTS

Components Cas # Percentage Hazardous Data ACHIH TVL

Lubricating Oils, petroleum, 64742-58-1 85 - 100% 5 mg/m3 5 mg/m3Hydro-treated spent

Residual Oils 64742-62-1 0 - 15% 5 mg/m1 5 mg/m1

SECTION 3 - EMERGENCY AND FIRST AID PROCEDURES

EYES: Flush eyes with water for 15 minutes lifting upper and lower lids occasionally. Consult physician if irritation or pain persists.

SKIN: Remove contaminated clothing and shoes. Wash exposed skin with soap and water. Consult physician if irritation or pain persists.

INHALATION: Move victim to fresh air. Provide respiratory support if necessary. Seek medical(Breathing) attention immediately.

INGESTION: Seek immediate medical attention. Do not induce vomiting unless recommended by(Swallowing) physician. If spontaneous vomiting occurs, keep head below hips to avoid aspiration (into lungs).

SPECIAL NOTE TO PHYSICIANS: In general, lubricating oils have a low oral toxicity.

SECTION 4 - HEALTH HAZARD DATA AND TOXICOLOGICAL PROPERTIES

PRIMARY ROUTES OF EXPOSURE: Eyes and skin contact; inhalation of incidental mists or vapors; ingestion.

SIGNS AND SYMPTOMS OF EXPOSURE:

ACUTE: Eyes: Contact may produce mild eye irritation and redness.

Skin: Contact may produce mild skin irritation. No significant skin absorption hazard.

Inhalation High concentration of vapor or mist may be irritating to the (Breathing): respiratory tract.

72

Ingestion Low order of acute oral toxicity. May cause irritation of (Swallowing): gastrointestinal tract, nausea and vomiting. Aspiration into the lungs during ingestion or vomiting may cause mild to severe pulmonary injury and possibly death.

CHRONIC: Prolonged or repeated skin contact may cause drying or dermatitis.

MEDICAL CONDITIONSAGGRAVATED BY Individuals with pre-existing lung or skin disorders may have increasedEXPOSURE: susceptibility to the effects of exposure.

OTHER POTENTIALHEALTH HAZARDS: None

SECTION 5 - FIRE AND EXPLOSION HAZARD DATA

FIRE AND Decomposition and combustion products may be toxic. Heated containersEXPLOSION HAZARDS: may rupture, explode or be thrown into the air. Vapors are heavier than air and may travel great distances ti ignition sources and flash back or explode. Not sensitive to mechanical impact or static discharge.

FIRE FIGHTING NFPA Rating: Health - 0 Fire - 1 Reactivity - 0PROCEDURES: Hazard Rating. Least - 0 Slight - 1 High - 3 Extreme - 4

EXTINGUISHING MEDIA: Carbon dioxide, regular foam or dry chemical

CONDITIONS OF FLAMMABILITY: Intense heat, sparks or flame.

FLASH POINT: 400° COC

SECTION 6 - REACTIVITY DATA

STABILITY: Stable under normal temperatures and pressures; not water reactive.

INCOMPATIBILITY (MATERIALS AND CONDITIONS TO AVOID): Avoid oxidizing agents, intense heat, sparks or flame.

HAZARDOUS POLYMERIZATION: None.

HAZARDOUSDECOMPOSITION PRODUCTS: None.

73

SECTION 7 - PREVENTATIVE MEASURES

PRECAUTIONS FOR SAFE USE AND HANDLING

HANDLING Keep away from intense heat, sparks or flame. Avoid contact with eyes, PRECAUTIONS: skin, clothing or shoes. Use in well-ventilated area and avoid breathing vapor or mist.

PERSONAL Use good personal hygiene. Wash thoroughly with soap and water after HYGIENE: handling and before eating, drinking or using tobacco products. Clean contaminated clothing or shoes and protective equipment before reuse. Discard contaminated clothing, shoes or protective equipment if they cannot be thoroughly cleaned.

SHIPPING AND Keep container tightly closed when not in use and during transport. Store STORING in a cool, dry place. Do not pressurize, cut, heat, weld, grind or expose PRECAUTIONS: containers to flame or other sources of ignition. Empty product containers may contain product residue.

SPILL Remove all ignition sources. Stop leak if you can do so without risk. Wear PROCEDURES: protective equipment specified in Section 7, CONTROL MEASURES. Ventilate area and avoid breathing vapor or mist. Fir large spills, dike far ahead of liquid spill for later disposal. Contain away from surface waters and sewers. Absorb with compatible absorbent material and shovel into closable container for disposal.

WASTE DISPOSAL Dispose in accordance with federal, state, provincial and local regulations. METHODS:

CONTROL MEASURES

EYE PROTECTION: Wear protective eyewear. Do NOT wear contact lenses.

PROTECTIVE Use neoprene, Nitrile, PVC or equivalent gloves to prevent contact with GLOVES: skin. Do NOT use natural rubber or equivalent gloves.

RESPIRATORY Use NIOSH/MSHA-approved respiratory protective equipment when PROTECTION: concentration of vapor or mist exceeds applicable exposure limit. A self- contained breathing apparatus (SCBA) and full protective equipment is required for fire emergencies. Selection and use of respiratory protective equipment should be in accordance in the USA with OSHA General Industry Standard 29 CFR 1910.134 or in Canada with CSAStandard Z94.4-M1982.

ENGINEERING Provide process enclosure or local ventilation needed to maintain CONTROLS: concentration of vapor or mist below applicable exposure limits.

OTHER Where spills and splashes are possible, wear appropriate oil-resistant PROTECTIVE boots, apron or other protective clothing. Clean water should be available EQUIPMENT: in work areas for flushing eyes and skin.

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SECTION 8 - PHYSICAL DATA

PHYSICAL STATE, APPEARANCE AND ODOR: Viscous liquid, amber, petroleum odor.

ODOR THRESHOLD: Not available.

SPECIFIC GRAVITY: .88 (API = 29.3)

DENSITY: 7.328 lbs/IS gal (860 g/l)

VAPOR DENSITY: Greater than 1 (air = 1)

BOILING POINT: Greater than 450° F

FREEZING POINT: Not available

EVAPORATION RATE: Less than 1 (ethyl ether = 1)

SOLUBILITY IN WATER: Insoluble

SECTION 9 - OTHER REGULATORY INFORMATION

TRANSPORTATION INFORMATION

DOT PROPER SHIPPING NAME: Not regulated

DOT CLASS: Not regulated

DOT ID NUMBER: Not regulated

TDG CLASSIFICATION: Not regulated

SARA TITLE III: Product does not contain toxic chemicals subject to the reporting requirements of Section 313 or Title III of the Superfund Amendments and Reauthoriization Act of 1986 and 40 CFR PArt 372

8 ACCESSORIESCall your dealer for pricing and availabilityFor replacement parts, go to www.embmfg.com and click on "Parts and Manuals" to download the latest parts manual for you model splitter, then call your dealer to order.

For GX Series BackhoesFor machines that have a greater flow (GPM) than the 5-7 gpm (18.9-26.5 lpm) specified for Wal-lenstein backhoes, controls flow up to 30 GPM.

#BFC501 FLOW DIVIDER KIT

#BFC501

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9 INDEX

PAGE PAGES

Safety ..............................................................2 Equipment Safety Guidelines .....................4 General Safety ...........................................3 Hydraulic Safety .........................................9 Maintenance Safety ....................................8 Operating Safety.........................................7 Preparation .................................................6 Safety Signs ...............................................5 Safety Training............................................5 Sign-Off Form ...........................................10 Storage Safety ............................................8 Transport Safety .........................................8Safety Sign Locations ....................................11Service and Maintenance ..............................54 Maintenance .............................................61 Service......................................................54Specifications ................................................63 Mechanical ...............................................63 Bolt Torque ...............................................64 Hydraulic Fitting Torque ............................65 Hydraulic Oil - MSDS ................................66

T

Trouble Shooting ...........................................62

A

Assembly .......................................................21

I

Index ..............................................................70Introduction ......................................................1

O

Operation .......................................................15 Attaching/Unhooking.................................27 Auxiliary Hydraulic System .......................25 Controls ....................................................19 Equipment Matching .................................18 Field Operation .........................................39 Machine Break-In .....................................17 Machine Components...............................22 Machine Preparation & Assembly.............21 Mounting to Skid Steer .............................35 Mounting with Optional Hydraulic Pump...31 Pre-Operation Checklist ...........................17 Side Frame Reinforcing ............................23 Storage .....................................................52 Rear Mounting Frame...............................24 To the New Operator or Owner .................15 Transporting..............................................50

mounted backhoes - national implement · ____check oil level in resevoir (if so equipped)...

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