Geko Engineering Ltd.33-34 Roundhouse Court,Barnes Wallis Way,Buckshaw Village,Chorley, Lancashire, PR7 7JN, UKwww.gekoengineering.co.uk

Instructions for Operation & Maintenance ofStump Beaver Model SB110

Serial number 1105001 and above

Document number GB002

Jan 2015

This manual contains important safety instructions and information. It must be made available to all personnel who operate and maintain this equipment.

Index Specifications Scope of operation Component locator Operation of the stump beaver Safety and maintenance

o Daily inspectiono Cutting tooth patterno Replacement of cutting teetho Lubricationo Transportation and handlingo Trouble shooting

Hydraulic schematic Exploded view Part numbers and suggested spare parts Warranty policy CE Certificate of conformity

SpecificationsWeight 110 kgOverall dims. L x W x H 445 x 555 x 600 (mm)Supply oil flow range 10 - 40 l/minSupply oil pressure range 16000-25000 KPa

(160-250 bar)Max rated motor RPM 2400RPM at 20 l/min flow 1200Nominal hose bore 15mm 15 mmQuick Couplers ½” BSPMotor to spindle bolt torque 85 n.MCutter wheel to spindle flange 105 n.MSpindle to frame bolt torque 130 n.MAdaptor bracket to frame bolt torque 85 n.MGuard fixing nut torque 20 n.MTooth bolt torque 130 n.MSpindle oil grade EP85-140 gear oilSpindle oil qty 0.24 litresHydraulic oil filtration min 10 microns

Scope of OperationThe Stump Beaver SB 110 is intended for the disintegration of tree stumps and roots by cutting with proprietary replaceable teeth intended for the purpose.The attachment is intended to be fitted to and utilise an excavator both to support in position, and feed the attachment into the body of the stump to be ground. In addition the excavator will provide the hydraulic power source required to power the cutting wheel.The excavator should have piping for an auxiliary supply of hydraulic fluid through its couplings between the range of 16000 - 25000 KPa pressure and 10 - 40 litres/min flow range. The excavator should be equipped with a pressure relief valve to protecting the auxiliary circuit set to 25000KPa (250 bar) Maximum.

The attachment is not designed for removal of soil, stones or cutting metal, asphalt, concrete or similar non organic materials – expose the material to be disintegrated prior to starting grinding

The attachment is not designed for working under water The attachment is not designed to be isolated from electricity The attachment is not designed to be spark proof The attachment is not intended to be operated without its guard The attachment is not designed to operate at greater pressures or flows than specified The attachment must not be used without the guarding as supplied being securely fixed in

place The use of suitable personal protective equipment is recommended Erect suitable barriers to exclude and warnings to protect passers by from flying material The attachment as supplied is compliant with CE certification any alteration or modification of

any part could render the certification and warranty invalid

This symbol is a safety alert. It is used in the text to draw attention to an operation which could cause injury

Do not stack the product for transport or storage

Isolate the power supply before removing the guard or inspection / cleaning

The product is heavy do not attempt a manual lift

Warning the machinery rotates

Tie down points for transport.

Keep bystanders away when operating the machinery

Direction of rotation of cutting wheel

Read and understand the instructions before using the equipment

Wear a face shield during use if the excavator is not fitted with a closed cab

Warning Symbols and their meanings

Equipment component locator

Product Serial Number Plate

Geko Engineering Ltd. Chorley Lancashire PR7 7JN www.gekoengineering.co.uk

Stump Beaver Model SB110 Max flow rate: 40 l/min Max rpm 2400 Max inlet pressure 250 bar Weight : 110 kg

Serial No. 15080001

Made in England 2015

Hydraulic motor

Inlet connection

Removable guard

Adaptor bracket

Serial number plate

Retaining pins

Storage and transportation stand

Operation of the Stump BeaverFailure to read, understand and follow these instructions could result in injury and/or damage to your Stump Beaver tree stump grinder, or excavator. If you are in any doubt, contact Geko Engineering Ltd.

Position the Stump Beaver on its stand, close to the excavator and on level ground. Connect the Stump Beaver attachment to the excavator by positioning the dipper arm of the excavator between the plates of the Stump Beaver mounting bracket, until the two retaining pins can be inserted through the mounting bracket and dipper arm.

Remove bucket and pins from the excavator dipper arm and carefully position the dipper arm between the side cheeks of the Stump Beaver mounting bracket so that it is possible to insert a bucket pin through the bracket and dipper.Locate the first pin, then lift the excavator boom to allow the Stump Beaver to pivot on the pin and position the bucket link as required to enable the second pin to be inserted. Once fully located in place the retaining pins are secured with lynch pins.Ensure the retaining pins are long enough and of the correct diameter for both the machine and attachment and that lynch pins are used to secure retaining pins in position. The pins must be a close fit in their holes and the arm of the excavator must be a close fit in the adaptor bracket. The excavator’s auxiliary hydraulic oil circuit must be set to return oil direct to tank – see excavator hand book, and set hydraulic breaker position to allow operation of a hydraulic breaker attachment. This ensures fast spinning of the grinder wheel.Ensure that when the operator is sat in the excavator seat, the wheel guard is to the right hand side, and the rotation direction arrows on the guard point towards the driver. See picture below. This will ensure that the chips will be directed away from the driver and towards the ground.

Operator’s view from excavator seat when Stump Beaver is mounted correctly.

Once the Stump Beaver is connected to the machine, the hydraulic hoses need to be coupled up. Operate the auxiliary hydraulic controls as required to de-pressurise the auxiliary circuit. Then switch off the machine.

Wipe clean the surfaces of the auxiliary coupler on the excavator and those on the stump grinder and connect both hoses. Connect the hydraulic hoses leading from the connection fittings on the Stump Beaver to the quick release couplings on the excavator auxiliary connectors. Note and ensure the direction of fluid flow is correct. Oil should flow from the excavator auxiliary to the connector marked “inlet” and return to the excavator oil tank through the other connector. No case drain line is required. Ensure that the hoses are locked in place with the outer collars on each of the female couplers.

Undo the Velcro straps and slide off the Stump Beaver stand. Check tightness of all nuts and bolts securing the adaptor bracket to the mainframe,

spindle to mainframe, motor to spindle housing and removable guard. Check each tooth clamp bolt is tight and each tooth is undamaged Start the excavator and raise the attachment off the floor a short distance. With the

excavator engine at low idle, slowly engage the auxiliary control to direct oil into the Stump Beaver. Check the direction of cutter wheel rotation is correct as indicated on the attachment guard. If the wheel does not rotate then try again operating the auxiliary pedal the other way. The wheel will only turn in one direction as it is controlled by a check valve.

If you wish to change the auxiliary control pedal action to start the wheel rotation. Switch off the excavator engine and de-pressurise the circuit and proceed to switch the male coupling to a female and female to male on the hoses. Check hoses are tight and start the excavator engine again at low idle and check operation which should now be activated by the opposite pedal action. The wheel will still turn in the same direction.

The stump grinder wheel should always be started with the engine at low idle and the throttle control used to increase engine speed to maximum, allow the oil to warm for a few minutes prior to using. When grinding is completed or to take a break, it is good practise to return the engine rpm to low idle before releasing the auxiliary pedal to allow the wheel to continue to spin whilst slowing down. Sudden release of the pedal at full engine rpm could cause pressure spikes within the hydraulic system

Carefully inspect the stump to be ground, looking for embedded metallic objects such as nails, wire. Remove any such objects with other means rather than with the stump beaver

Inspect area around stump base and remove stones which could damage teeth. Dig out an area around the stump and below the surface prior to beginning grinding if the earth is stonyCheck for the proximity of gas pipes, electricity cables and other utility services before starting to workEnsure the excavator is on firm ground and the blade is down to ensure stability – do not overreach – be aware of the attachment weightWarn bystanders / pedestrians of the likely hood of flying material, cordon off work area and/or protect with screening

Move the excavator to position close to the stump to be ground and lower the blade. Engage the auxiliary supply and increase the engine RPM to full. Slowly lower the Stump Beaver down on the stump until the teeth can be heard / seen to contact the stump. Estimate the depth of cut to approximately ¾” to 1” depending on the type of wood to be ground, and slowly slew the excavator upper body to feed the stump beaver across the surface of the stump.

Following each pass slowly slew the excavator back across the stump until clear and drop the boom in readiness for the next cut. Proceed in this manner until the stump is removed to the desired depth. The object is to maintain max RPM of the cutting wheel to allow efficient cutting of the stump into chips. Stalling the cutter wheel, by trying to cut too much of the stump in one pass, will result in heat transfer to the oil and may cause shut down of the excavator’s hydraulic system.

If at any time it is thought necessary to perform an inspection of the cutting teeth or unblock debris from the attachment ensure that the attachment is isolated from the excavator’s power supply by switching off the engine, removal of the ignition key and disconnection of the hydraulic hoses. Ensure the arm of the excavator is supported such that if it were to suddenly fall due to a loss of pressure in the hose(s) it could not cause injury to the operator or person performing the inspection.

Safety and Maintenance

Daily inspection

At the beginning of each shift perform the following inspections with the attachment hoses disconnected from the machine and the key removed to prevent start up. Ensure that an adequate, secondary means of support is in place to prevent the excavator arm from dropping if a sudden loss of pressure was to occur. Alternatively remove the stump grinder from the excavator to its stand for maintenance.

Remove the guard and;Check condition of cutting teeth. replace teeth which have worn, cracked or missing carbide tips

Check tightness of tooth securing bolts

Check tightness of adaptor bracket bolts

Check tightness of spindle and motor mounting bolts

Cutting tooth orientation and replacementSeveral combinations of tooth patterns are possible and the experienced operator will adopt his own preference. It is important that the teeth are secure and do not cause imbalance of the wheel. A setting gauge is provided to obtain the recommended tooth setting.Tooth bolt torque is 130nM. A hole is provided in the cutting wheel which aligns with a socket to allow a 12mm diameter pin to be inserted in order to temporarily lock the wheel whilst checking or replacing teeth. Ensure the pin is removed and the wheel is free to spin prior to replacing the guard and using the Stump Beaver.The standard SB110 is supplied with its teeth arranged as shown below the pattern is repeated around the cutting wheel, start at any location and follow the sequence.

LS = Left tooth/Straight tooth SR = Straight tooth/Right tooth

SR

LS

SRSR

LS

SR

LS

Replacement of cutting teethShould the teeth require replacement raise the attachment to working height, support the excavator arm to prevent accidental lowering of the arm should a loss of pressure occur, and disconnect the hydraulic hoses from the machine. Remove the ignition key to prevent start up and accidental operation. Remove the guard to gain access to the cutting wheel.Turn the wheel to enable the locking pin to be inserted into the socket, locate the tooth or teeth to be replaced and using a 1/2” AF allen key slacken or remove the two cap head screws securing the tooth clamps. Clean the inside groove of the tooth clamp halves and both surfaces of the cutting wheel using a wire brush or similar to remove all traces of rust, and other deposits. Also clean the threads of the clamp screws. Insert a new cutting tooth as required following the pattern as described to maintain balance. Set the projection of the cutting tooth with gauge provided. Replace the tooth pockets and screws and tighten the screws evenly until finger tight, and the clamps lie parallel to the cutting wheel face lightly gripping the teeth. Check and adjust the position of the teeth before using an Allen key and extension bar to

fully tighten evenly to130 n.M Check every tooth clamp screw for tightness and inspect every tooth for cracks or breakage

whilst the guard is removed. Also whilst the guard is removed, take the opportunity to check the spindle bolts for security and inspect the front of the spindle for signs of oil leaks. Replace the guard and tighten the securing nuts. Check by hand that the wheel is free to rotate through a full revolution before re connecting the hydraulic hoses to the auxiliary connectors of the excavator.

LS

LubricationThe spindle assembly of the SG110 is supplied pre-filled with gear oil of EP85-140 grade. Oil fill plugs are located on the top of the spindle housing and can be accessed after removal of the adaptor bracket, through the two slots in the main frame of the attachment. At least once per year completely drain and refill the spindle housing with 0.24 litres of the recommended grade oil. Replace both plugs and wipe the surface. The plugs have a tapered thread to seal against oil egress. When filling or replacing oil take all reasonable precautions to limit direct exposure to skin and eyes. Do not ingest oil and take care to clear up spillages to prevent slips. Dispose of old oil in an environmentally sensitive way. Specific details can be found on the relevant COSH data sheet available on request. To ensure a long and trouble free service life the hydraulic oil used in the machine should be filtered to at least 10 microns. Attention should be paid to cleaning any dirt from around the quick couplings prior to coupling to the auxiliary of the machine.

Transportation and handlingThe Stump Beaver is a heavy unit and should not be lifted or moved manually by a single person. Obtain help from another person, use a truck or attach to the excavator for transport. After use or during storage return to the stand provided to protect the teeth against damage.

TroubleshootingPoor cutting performance

Check direction of rotation

See decal on wheel guard

Reverse hose connection to correct

Check for damaged or chipped cutting teeth

Replace teeth – see manual for procedure

Check hydraulic flow and pressure of excavator using an adjustable flow meter

Flow should be 10 l/min – 40 l/ minPressure between 160 - 250 bar

Adjust pump output and or pressure relief valve on excavator

Excessive vibration of the attachment

Stop remove guard and check for damaged/ missing teeth

Check for loose / missing teeth Check tooth bolts are tight

Use gauge provided.Tighten bolts to recommended torque 130n.M

Excessive heat Check flow and pressure output

Adjust as required at machineAllow to cool

See specification in this manual

Hydraulic Schematic

Item no Description1 Adaptor bracket2 Frame3 Removable guard

Product WarrantyGeko Engineering Ltd, through its distributor warrants that each item of equipment manufactured by it and delivered hereunder to the initial user will be free of defects in material and workmanship for a period of six (6) months from initial operation or six (6) months from the date of shipment to initial user, whichever occurs first.

Spare Parts – Six (6) months from date of shipment to initial user Geko Engineering Ltd. will provide a new or repaired part, at its sole discretion in place of any part that is found to be defective in material or workmanship during the period detailed above. Such parts will be repaired or replaced without charge to the initial user during normal working hours at the place of business of a Geko Engineering Ltd. distributor authorised to sell the type of equipment involved or other establishment authorised by Geko Engineering Ltd.

The above warranties do not apply to failures occurring as a result of abuse, misuse, negligent repairs, corrosion, erosion, and normal wear and tear, alterations or modifications made to the product without the express written consent of Geko Engineering Ltd, or failure to follow the recommended procedures as provided in the product operation and maintenance publication

Accessories or equipment furnished by Geko Engineering Ltd, but manufactured by others including but not limited to, hydraulic motors, hydraulic fittings, spindle bearing assemblies, seals, cutting teeth and retaining clamps shall only carry the manufacturer’s warranty which Geko Engineering Ltd. can lawfully assign to the initial user.

THE ABOVE WARRANTIES ARE IN LUE OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED, (EXCEPT THAT OF TITLE), AND THERE ARE NO WARRANTIES OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE.

NOTE – Should a failure be suspected within the hydraulic motor or bearing assembly, do not open up to inspect but remove from the frame of the unit and return to Geko Engineering Ltd. for inspection by the manufacturer. Opening of either unit could invalidate any warranty.

EC DECLARATION OF CONFORMITY

Name and address of manufacturer Geko Engineering Ltd.33/34 Roundhouse Court, Barnes Wallis Way,Buckshaw Village, Chorley, Lancashire, PR7 7JN, UK

Name and address of the Not applicableAuthorised Representative in the European community

Name and address of person As aboveauthorised to compile the technical file

Description of equipment Stump grinder attachment for micro and mini excavators

Model type SB110

Serial number ……………………………………………………

Directives / Conformity / Machinery Safety Directive (2006/42/EC)/ Assessment Procedures: Annex VII / Module A

Name and address of notified body Not applicable

Technical standards and specifications BS EN 474-1:2006+A1:2009 Earth moving machinery-Safety-Part1: General requirements

Declaration: The person signing below declares that the above named equipment fulfils all the relevant provisions of the stated directives.

Authorised Signature: Name: Mr. G. Dewhurst Position: Director

Signature:

Place of Declaration: Geko Engineering Ltd., Chorley, Lancashire, UK

Certificate of conformity to CE directivesThe equipment represented in this manual may be used in various locations world wide. Equipment sold and shipped into European common market countries requires that the equipment display the EC Mark and conform to various directives. In such cases, the design specification of this equipment has been certified as complying with EC directives. Any modification to any part is absolutely prohibited and would result in the CE certification and marking being rendered invalid. A declaration of that conformity follows: