caterpillar 973c

8/14/2019 Caterpillar 973C

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Engine

Engine Model Cat C9

Net Flywheel Power 178 kW 239 hp

Cat C9 engine with ACERT Technology to meetEPA Tier 3 and EU Stage IIIA emissions.

Buckets

Capacity General Purpose 3.2 m3 4.19 yd3

Capacity Multi-Purpose 2.9 m3 3.79 yd3

Bucket capacities are with long bolt-on teethand segments.

Weights

Operating Weight 26 373 kg 58,142 lb

Operating Weight: Includes coolant, lubricants, 100% fueltank, ROPS/FOPS cab, General Purpose Bucket with longbolt-on teeth and segments and 75 kg (165 lb) operator.

973CTrack Loader


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973C Track LoaderLeading edge design, state-of-the-art technology and unmatched versatility in one machine

allows maximum productivity.

Top Performance.

A machine designed to be productive over

a wide range of tough applications from

heavy clearing to high-volume truck loading,

from the slag pits of steel mills to big city

landfills. The 973C not only can master the

toughest excavation but can also finish grade

with delicate precision.

Reliable, durable, rugged construction, self-

diagnosis of electrical and power train systems,

and easy maintenance help ensure extended

service life.

Special Application Arrangements

Special arrangements Waste Handling/

Demolition, Steel Mill, Wide Gauge and

more, are available or can be designed

on request to allow the 973C to workin the toughest conditions. pg. 14

Undercarriage

Improved traction, increased machine

stability and reduced frame impact

are benefits of the Cat oscillating

undercarriage. The Cat sealed andlubricated track reduces pin and internal

bushing wear, reduces component

friction and track noise, extending

track life. pg. 12

Caterpillar Monitoring System (CMS)

The Caterpillar Monitoring System

with flashable memory, monitors the

hydrostatic and electrical systems and

provides the operator instant feedback

on the machine conditions. pg. 7

Hydrostatic Drive

The hydrostatic drive with electronic

control provides precise modulation for

quick, smooth operation and superior

maneuverability. Shorter cycle times,

high efficiency, and excellent

maneuverability result in increased

productivity. pg. 6

Engine

The new Cat C9 ATAAC diesel engine

retains the reliability, durability and

performance of its predecessor, while

adding the benefits of Caterpillar

ACERT Technology for compliance

with the stringent Tier 3/Stage IIIA

emission standards. pg. 4


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New Feature

3

Total Customer Support

Your Caterpillar dealer offers a wide

range of services which can be set up

with a Customer Support Agreement.

A customized plan, from PM serviceto total machine maintenance, with

flexible financing, allows for optimal

return on investment. pg. 16

Serviceability

The 973C design offers reduced

maintenance, convenient access to

components, easy diagnostic capabilities,

as well as easy and economical componentreplacement possibilities. Cat dealers also

provide quick parts availability. pg. 15

Work Tools

A large choice of buckets, Ground

Engaging Tools (GET), and attachments,

allow configuration of the 973C for

maximum performance in virtually

any job. pg. 11

Structure

The box-section mainframe is designed

specifically for the work of the track

loader. It provides durability, resistance

to twisting and a solid base for all

components. The dual Z-bar linkage

offers increased breakout force and fast

dump speed for enhanced productivity.

pg. 10

Operator Station

The C-Series Track Loader is designed

for operator comfort, convenience, and

productivity. Sound suppressed ROPS

cab, heating and air conditioning, an

adjustable air-suspension seat with side-

to-side isolator, and pilot hydraulic

implement controls help reduce

operator fatigue. pg. 8


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C9 Diesel Engine. The Cat C9 is an8.8 liter (537 in3) displacement, six-

cylinder, in-line configured engine with

hydraulically actuated electronic fuel

injection. It uses ACERT Technology,

a series of Caterpillar engineered

innovations that provide advanced

electronic control, precision fuel delivery

and refined air management, resulting

in outstanding performance and lower

emissions.

The Cat C9 with ACERT Technology

meets the U.S. EPA Tier 3 and European

Union Stage IIIA emissions standards,

which dramatically restrict the emission

of nitrogen oxide and other pollutants in

an effort to improve worldwide air quality.

The C9 rating is 178 net kW (239 net hp)

at 1,800 rpm.

Design. The C9 with ACERT Technologyis based on the proven Cat C-9 Tier 2/

Stage II engine with thousands currently

in operation. It offers a compact design

with big, heavy-duty engine features for

outstanding durability, reliability and

performance. The cylinder head features

a new cross-flow air design with four

valves per cylinder and updated port

geometry. The improved intake port

geometry provides smoother transitions

and less flow restrictions. The C9 uses

mid-support wet cylinder liners, which are

easily removed for service. A two-step

honing process is used for cutting deep

grooves for oil retention.

ADEM A4. The ADEM A4 electroniccontroller is the brain of the engine and

contains the engines control software.

All the sensors are remote-mounted andconnected to the main module.

The main concept behind ACERT

is advanced combustion. ACERT

technology begins with ADEM A4.

This electronic brain regulates fuel

delivery, airflow and other engine

functions. The controller directs the

HEUI injectors to deliver multiple

injections of fuel during the engines

compression stroke.

The C9 features ADEM A4, the most

advanced 32-bit Electronic EngineControl available. ADEM A4 offers

greater processing speeds and memory

than ADEM III. It offers a variety of

fuel maps to optimize ACERT technology

for better performance and efficiency.

Fuel System. Hydraulically actuatedelectronic fuel injection is a Cat exclusive

technology and has a proven track record.

The HEUI design has been refined and

now supplies multiple injections of fuel

during the engines compression stroke.

With multiple injection, fuel is introducedto the combustion chamber in a number

of controlled microbursts, rather than all

at once, so it precisely regulates the

combustion cycle. The improved HEUI

design also offers improved combustion

and fuel delivery. An added benefit of

this is better control of engine sound

and vibration levels.The HEUI system

continues to offer excellent reliability

because it has fewer moving parts than

mechanical unit injection and requires

very few adjustments, reducing

maintenance costs and increasingmachine availability.

Design. The fuel system design eliminatesexternal high-pressure fuel lines, providing

efficient, precise fuel delivery, and timing.

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Provides power, reliability and acts as a working counterweight in the rear of the machine,

for optimum balance.

Engine


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Serviceability. Unit injectors can beserviced individually, without the need

to service the whole fuel system.

Turbocharger and Aftercooler.The turbocharger is a wastegate design

with a new titanium compressor wheel.

The titanium wheel is better able to

withstand the stress and wear of high-

speed operation. This new turbocharger is

well-matched to the air-to-air aftercooler

resulting in high power. The exhaust

driven turbocharger packs more air into

the cylinders, while the air-to-air

aftercooler cools the pressurized air from

the turbocharger, making the engine

intake air denser. The increased air in

the cylinders results in more power,

improved combustion, and reduced

exhaust emissions.

Cooling System. Incorporated into asingle-plane cooling unit are the engine

radiator, the hydraulic and power train

oil coolers, and the air-to-air aftercooler.

Wide fin spacing for Trash Resistance

and swing-out latched grille for easy

cleaning are now standard equipment.

Extended Life Design. The forged steelcrankshaft increases strength and

durability. It features induction hardened

journals and fillets. The camshaft is madeof carburized and heat-treated steel for

excellent durability. The pistons feature an

articulated two-piece design. The forged

steel crown is stronger than aluminum and

allows more flexibility in the ring position.

Starting System. The ADEM A4controller controls the electric

starter motor and the starter relay.

The ADEM A4 prevents fuel from being

supplied for starting until sufficient oil

pressure is present. This prevents wear

on the bearings due to operating withou

adequate lubrication.

Engine Installation. The engine isinstalled using rubber mounts to reduce

the transfer of engine vibration to the

frame and cab, lowering operator

vibration, sound levels, and fatigue.

Rear Engine Location. Rear enginelocation allows excellent forward

visibility, while serving as a working

counterweight. Helps reduce radiator

plugging while providing easy service

access to the engine and other majorcomponents.

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Shifting. The hydrostatic drive eliminatesthe need for transmission shifting, which

allows the operator to concentrate on

working, maneuvering, and production.

Machine Speed. The ElectronicHydrostatic Control (EHC) automatically

adjusts machine speed to give the

equipment hydraulic system priority,

while the hydrostatic system takes

advantage of all remaining engine power.

Electronic Hydrostatic Control (EHC).The EHC maintains engine rpm in

optimum operating range and balances

the two track drive systems for straight

travel without machine drift.

Caterpillar Monitoring System (CMS).The EHC interfaces with the CMS for

system diagnostics and calibrations. It is

self diagnosing, and fully compatible with

Electronic Technician (Cat ET) software.

This allows quick and easy calibrationsand troubleshooting.

Pumps and Drive Motors.Variable displacement pumps and

variable displacement drive motors are

electronically controlled by the EHC,offering high efficiency and precise travel.

Each track is independently driven by a

separate hydraulic circuit consisting of one

variable displacement pump, connected

by Cat XT-6 hydraulic hose and

couplings to a variable displacement

piston motor.

Separate Hydraulic Pumps. Separatehydraulic pumps offer easy servicing.

Maneuverability. Independent power isprovided to each track, which provides

great maneuverability, speed, and sideslope operation. Controlling independent

power and speed for each track allows

the operator to maintain full power to

both tracks while turning, achieving

a Power Turn. Power Turns allow

increased productivity when dozing

or backfilling. For additional

maneuverability, the operator can

use counter rotation, which allows

spot turns in tight locations.

Travel Speeds. Travel speeds are

infinitely variable between zero and topspeed. Two speed modes, travel mode

and work mode, provide two different

speed ranges to best match machine

speed and torque to the job conditions for

maximum productivity. Maximum travel

speed is increased to 10 kph (6.2 mph)

when the travel/work mode switch is

in the travel position. In addition, switch

between travel and work positions takes

effect immediately.

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Hydrostatic DriveThe electronically controlled hydrostatic drive helps provide quick response for shorter cycle

times and increased productivity.


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Caterpillar Monitoring System Functions.The CMS offers three main functions.

1) Quick and simple calibration of the

hydrostatic drive system. 2) Preventionof damage by alerting the operator if a

machine fault has occurred. 3) Monitoring

of hydrostatic and electrical systems to

aid service personnel in troubleshooting

and repairs.

Gauge Cluster. The gauge cluster containsfour gauges, which monitor:

Engine coolant temperature

Power train oil temperature

Hydraulic tank oil temperature

Fuel level

Alert Indicators. The alert indicator clustergroups the individual alert indicators for:

Low fuel pressure

Low fuel

Charge filter bypass

High pump drive

Low hydrostatic system charge

pressure

Low engine oil pressure

Check engine detected by ADEM A4

Low/high alternator output

System warning for hydrostatic

drive system

Ether aid activated

Digital Message Display. The digitaldisplay can show the operators choice

of hour meter, engine rpm, odometer,

or service codes.

Service Mode. When in service mode,service codes from the EHC are shown on

the Digital Message Display. The service

code information is transferred via the

Cat Data Link from the EHC to the

main display module.

Three Level Warning System.CMS also functions as a warning

system with three levels of warning.

CMS Self Test. The CMS self-testverifies that the main display module

is operating properly every time the key

start switch is turned from the off to

theon position.

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Caterpillar Monitoring System (CMS)The Caterpillar Monitoring System offers three main functions.


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Designed for operator comfort, convenience and ease of operation throughout the work day.

Operator Station


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1. Heating and Air Conditioning.The air circulation system delivers

filtered, pressurized, and temperature-

controlled air through 10 louvered vents.Air conditioning and heater are standard

equipment.

2. Cat Comfort Series Seat. The Caterpillarair-suspension seat, with side-to-side

isolator, is ergonomically designed and

fully adjustable for maximum operator

comfort and control. The backrest

conforms to the operators spinal curve.

The contoured base curves away from

lower back to reduce pressure.

Retractable seat belt is 76 mm (3 in)

wide for positive, comfortable restraint.

3. Storage Space. Storage spaces includea lockable storage box, a lunch box

compartment, beverage holder, and

coat hook.

4. Armrests. Adjustable armrests can bepositioned up or down. The right armrest

is adjustable forward and backward.

Each armrest can be inclined to different

angles for excellent operator comfort

and control.

5. Dashboard. The newly designed

smooth, rounded dashboard with integraldefroster vents, provides all the necessary

functions and instrumentation within

the operators normal line of sight.

6. Hydrostatic Drive System Controls.The hydrostatic drive system controls

allow quick speed and directional

changes from a single control lever formaximum maneuverability. Pedal steering

allows precise control of each track

independently, with on demand counter

rotation. The brake pedal supplements

dynamic hydraulic braking provided

by the hydrostatic drive system.

7. Speed Switches. The speed modeswitch allows the operator to choose

between work mode and travel mode

or maximum drive speed, to best match

the machine speed to various job

conditions. The electronic engine speed

selector switch is used by the operator

to set engine rpm.

8. Pilot Operated Controls. Pilot operatedimplement controls allow easier operation

and greater productivity. Choice of

single-lever pilot control (standard) or

two-lever (optional) is available for bucket

lift and dump. Adjustable automatic lift

and bucket position kickout allow the

operator to concentrate on positioning the

machine, resulting in higher productivity.

9. Viewing Area. The viewing areaincludes tinted glass to reduce glare and

provides excellent visibility to the bucket

tracks, and around the engine enclosureto the rear. Sunvisor, windshield wipers

and washers are all standard features on

the cab. The front wiper has variable

speed, intermittent control.

10. Rearview Mirror. The rear view mirroris located above the front windshield,

maximizing the operators visibility.

Adjustable Steering Pedals. The totaltravel of the steering pedals is 23 but

the angle can be adjusted from 35 to 50.

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Mainframe and Loader Tower.The mainframe and loader tower is a

single, welded fabrication with castings

and forgings incorporated at points of

high stress to distribute those stresses

over wide areas for a long structural life.

Design. Strong box-section mainframedesign, with continuous, deep-penetration

welds resist twisting loads to protect

components from excessive wear or

damage without adding extra weight tothe machine. The frame rails consist of

two box sections, which are joined at the

rear by a box-section cross member.

Mounting points for the final drives,

pivot shafts, and operators platform are

integrated into each mainframe side rail.

Four-Plate Loader Tower. The four-plateloader tower is integral with the basic

mainframe. The loader tower distributes

forces evenly from the lift arms to the

mainframe, which eliminates twisting

for maximum structural durability.

The loader tower provides solid

mounting points for lift arms, lift

cylinders, and Z-Bar tilt cylinders.

Castings. Steel castings (shown in red) are

used in areas of high stress concentration.Large radius curves dissipate stresses that

could cause fatigue and cracking.

Steel Frame. Fatigue resistant steel framesections along with castings provide

flexibility, durability and excellent

resistance to impact loads.

Durability. Structures are designed toprovide durability and extended service

life to support multiple rebuilds.

Straddle Mounting. Straddle mountingsupports all lift arm pivot points on both

ends of the pin eliminating twisting forces

and enhancing structural durability.

Z-Bar Linkage. Breakout force is

exceptionally high due to the mechanical

advantage of Z-bar linkage design, and

hydraulic pressure applied to the head

end of the tilt cylinders. Using dual tilt

cylinders and linkage provides the

operator a better view of the work

area, bucket, and cutting edge.

Sealed Loader Linkage. The 973C linkagehas fewer grease points compared to other

linkage designs because many pin joints

are sealed to keep dirt out. Fewer grease

points and sealed pins means less

downtime for maintenance allowing

more working hours between servicing.

Simultaneous Lift and Dump.Simultaneous lift and dump for fast truck

loading and smooth grading, and the

ability to meter material from bucket.

Lift Kickout. Adjustable automatic liftkickout and bucket positioner allow theoperator to concentrate on positioning

the machine rather than the bucket.

This results in greater productivity.

Lift Arms. The two arms are welded intoa single unit, using a weld-fabricated

cross-tube. The fabricated cross-tube

and tilt lever, use forgings at high stress

points to spread the loads for long life.

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StructureThe box-section mainframe is designed to handle heavy loads, while the dual Z-Bar linkage

maximizes breakout force, while distributing stress loads to the mainframe.


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Versatility. The large variety of tasks anoperator can perform with the standard

machine and attachments has lead to the

Caterpillar track loaders reputation forversatility.

General Purpose Bucket. The GeneralPurpose (GP) bucket is designed for

excellent loadability and long life

in applications such as hard bank

excavating, stripping, and stockpile

loading. High-strength, low alloy

steel helps the bucket resist dents and

abrasions. Shell-tine reinforcements

support the rear of the bucket for

increased structural strength.

Multi-Purpose Bucket. The Multipurpose(MP) bucket is designed for a broad range

of applications, such as loading, stripping,

clearing, bulldozing, picking up debris,

and fine grading. The bucket clamps

hydraulically to grip logs or handle

other tough-to-grasp materials.

Extreme-Service Multi-Purpose Bucket.Offered as an attachment, the extreme-

service Multi-purpose bucket has the

same load capacity as the Multi-Purpose

bucket. The reinforced hinges, thickerside-plates, and reinforced spill-plate

are designed into the extreme-service

Multi-Purpose bucket for situations

where the stresses can exceed the design

objectives of the standard MP bucket.

Slag Bucket. The Slag bucket is speciallydesigned to meet the unique challenges

presented by slag handling applications.

Designed for continuous heavy-duty work

in hot slag, the thicker material absorbs

slag heat which virtually eliminates

bucket distortion.

Landfill Multi-Purpose Bucket.The Landfill Multi-Purpose (MP Landfill)

bucket combines the versatility of

a Multi-Purpose bucket with the

performance of a Landfill design.

Constructed with a trash-rack for

increased capacity, extra strength and

better load retention. Ideal for applicationsin the harsh refuse market, whether

digging or spreading material at the

landfill or grasping and loading refuse at

a transfer station. The clamping action

of the front section gives the bucket the

ability to load material, doze with the

straight side of the dozer, grab bulky

items with the clamp or control the

discharge of fill/cover material.

Ripper-Scarifier. The ripper-scarifieradds extra versatility to expand the

application of the machine. Hinged-type

with three shanks, beam mounted withtwo pins pressed into each side of the

mainframe. Raised and lowered with two

wide-mounted cylinders. Six-pin linkage

requires no lubrication.

Bucket Protection Options. Caterpillaroffers several types of adapters, tips, and

cutting edges, which increase bucket life

and maximize performance. (1) Bolt-on

adapters, tips, and bolt-on reversible edge

segments provide a clean working floor

and increase bucket capacity. Heavy-duty

segments are available with 62 percent

more wear material than standard

segments. (2) Bolt-on, 2-strap adapters,

and tips, including corner adapters, offer

excellent penetration. (3) Bolt-on,

reversible, cutting edges are ideal when

penetration is not a consideration, such as

in clean work or stockpiling applications

(4) Weld-on, top-strap adapters are also

available with a GP bucket. They are

flush-mounted with the bottom of the

cutting edge to provide a smooth bucket

bottom and unrutted work surface.

These adapters can be used with anyof the tip options (not with a bolt-on

protection system).

Tip Options. Caterpillar GET offers avariety of tips to better accommodate

your needs in any working environment,

whether that is high impact or general-

purpose applications.

K Series Tooth System. The newK Series tooth system matches customer

requirements of longer life, improved

performance, greater reliability and ease

of removal and installation.

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Work ToolsA variety of attachments and Ground Engaging Tools (GET) are available to maximize

performance in any application.


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Undercarriage. The oscillating track rollerframe design decreases ground induced

impact loads to the machine, increases

machine stability on rough terrain, and

provides a smoother, more comfortable

ride for the operator.

Pivot Shaft. Steel pivot shafts attach therear ends of the track roller frames to the

loader mainframe and carry most of the

weight. The pivot shafts transfer ground

induced shock loads from the track rollerframes to the loader mainframe rather

than through the final drives. The result

is longer final drive life.

Equalizer Bar. The equalizer bar is pinnedin its center to the machine mainframe

and at the ends to each track roller frame.

This allows the forward ends of the track

roller frames to oscillate, or move

vertically, to keep more track on the

ground in uneven underfoot conditions.

The equalizer bar also provides a more

stable work platform for the operator,

who will be comfortable working at

faster speeds for increased productivity.

Track Roller Frame. The track rollerframes are a welded, box section design,

similar to the box section design of the

mainframe and loader tower, which

provides strength and resistance to

bending without adding extra weight.

Track and Carrier Rollers. Seven trackrollers spread the machine weight over

a larger area. This improves stability and

provides a more comfortable ride for theoperator. Two upper carrier rollers on each

side mount to the machine mainframe.

This mounting arrangement helps resist

mud packing of the undercarriage.

Track Adjuster. The track adjuster andmechanical recoil system uses a large

recoil spring and grease filled adjustment

cylinder, which allows the idler to move

forward and back to maintain proper track

tension as it absorbs undercarriage

shock loads.

Swing-Link Idler. Permits horizontal idlermovement, absorbing shock loads and

maintaining proper track tension, while

eliminating the need for shims and wear

strips. The removal of wear strips

eliminates a point of service and

maintenance. Cat idlers provide

superior structural support.

Sealed and Lubricated Track. Sealed andlubricated track keeps maintenance costs

down by reducing pin and internal bushing

wear, which can extend the life of the

track and the undercarriage components.

Lubricating the pin helps reduce

component friction for less track noise

and greater power train efficiency.

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Keeps more track on the ground for maximum traction and stability. Several shoe options

provide best match to job conditions.

Undercarriage


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Track Links. The standard track links are

the newest generation of Extended Wear

Life (EWL) track. Included is more wear

material for longer track life. A two-piece,

split master link allows easy trackremoval and installation.

Sprockets. The Tough Steel sprocketsegments extend sprocket segment life.

The five segments are bolted onto each

final drive sprocket hub. Segments can

be removed or replaced without breaking

the track. Driven by every second sprocket

tooth, the track chain makes two complete

revolutions before each tooth contacts a

bushing once. The result is long, even

wear of the sprocket teeth.

Shoe Options. There are several shoe

options to choose from with the Caterpillar

oscillating undercarriage. Wide, double

grouser is now standard. Consult your

Caterpillar dealer for more information.

1. Double Grouser Shoes. The standarddouble grouser shoes are designed for

good traction, easy turns, and reduced

bending.

2. Trapezoidal Center Hole Shoes.

Trapezoidal center hole shoes let the

sprocket push out dirt and debris, to

reduce packing between the shoe and

the bushing.

3. Single Grouser Shoes. Single grousershoes increase penetration and traction

in lower impact and lower abrasion

conditions.4. Chopper Shoes. Chopper shoes aresingle grouser shoes with trapezoidal

center hole and additional diagonal side

grousers for increased chopping ability.

Recommended for landfills, transfer

stations and demolition applications.

Extreme Service Shoes. Extreme serviceshoes are available with more hardened

wear material for longer wear life and

higher impact applications.

Wider Shoes. Wider shoes are alsoavailable to reduce ground pressure

in soft underfoot conditions.

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Waste Handling/Demolition

Arrangements. Waste Handling/Demolition arrangements provide added

versatility and are designed to make the

973C perform well in sanitary landfills,

waste handling or demolition applications

where the machine spreads, compacts,sorts, shreds and crushes materials.

Steel Mill Arrangement. Steel mill

arrangements allow the 973C to play

a key role in the mills production.

The compact stature and maneuverability

of the 973C is well suited for working

and traveling in a mill. Special guarding

for the operator, machine, and hydraulicsare added. Equipped with a Steel Mill/

Slag bucket it has the durability and

breakout force to handle the hot slag.

Wide Gauge Arrangement. The WideGauge 973C is designed for work in very

soft underfoot conditions. For enhanced

flotation and stability, the track gaugehas been widened and wider track shoes

installed. The larger track shoes increase

the ground contact area for reduced

ground pressure.

Additional Arrangements. Many otherarrangements are available. For other

custom-designed arrangements for

specific applications, contact your

Caterpillar Dealer.

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Special Application ArrangementsSpecial arrangements are available, or can be designed on request, to allow the 973C to

work in special applications.


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Reduced Maintenance. The 973C has

many service features incorporated in

the machine including:

Caterpillar Extended Life Coolant

for extended change intervals.

Sealed electrical connectors lockout dust and moisture.

Caterpillar XT hydraulic hose, in

medium and high-pressure circuits,

provide high abrasion resistance and

far exceed industry standards.

O-Ring Face Seals (ORFS) hydraulic

couplings help eliminate fluid leaks,

provide positive seals, and are

reusable for lower operating costs.

Removable floor panels in the cab

to access the engine, and hystat and

implement pumps.

Extended change intervals for engine

and hydraulic/hystat oil.

Scheduled Oil Sampling Fluids

Analysis helps avoid unnecessary

downtime.

Fluid taps make oil sampling easier.

Service Intervals. The time betweenfluid and filter service intervals has

been significantly increased, minimizing

downtime and maximizing productivityfor the 973C.

Easy Component Access. The rear enginedesign and large engine access doors make

it easy to reach the engine, electrical

components, hydrostatic system, and

batteries. Hydraulic and fuel filters are

located close to each other. Removable

cab floor panels create easy access to

internal components. The hydrostatic

drive system features separate pumps and

motors for low replacement or rebuild

cost. All lubrication points are accessible

from ground level. The swing-out latched

grille, now standard, reduces downtime

and the cost for cleaning, inspection,and repair of the cooling package.

Charge and Case Drain Filters.

Two spin-on, hydraulic oil filters for

the hydrostatic drive system, are located

inside the right access door for ease

of access.

Water Seperator and Fuel Filter.

The water separator and fuel filter are

located inside the rear right access door

for ease of access and serviceability.

Product Link. This option allows the

customer or dealer to obtain machine

diagnostics and location from their

offices. Product Link provides updates

on service meter hours, machine

condition, machine location, and

integrated mapping/route planning.

Easy Diagnosis. The CaterpillarMonitoring System and self-diagnosing

Electronic Hydraulic Control (EHC) work

together to warn against both occurring

and impending faults to reduce downtime

The electrical wiring is color-coded and

numbered for easy diagnosis and repair.

Serviceability. Centralized drainingpoint for splitter box, engine and power

train allow to even more improved

serviceability of the 973C.

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ServiceabilitySimplified service and extended service intervals means more productive uptime.


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Product Support. Your Cat Dealer offersa wide range of services which can be set

up with a Customer Support Agreement.

The dealer can customize a plan for you,

from PM service to total machine

maintenance, allowing you to optimize

your return on investment.

Remanufactured Components.Save money with remanufactured parts.

They offer the same warranty and

reliability as new products at a cost

savings of 40 to 70 percent.

Replacement. Repair, rebuild, or replace?

Your Cat Dealer can help evaluate the

cost involved so you can make the

right choice.

Service Capability. Whether in thedealers fully equipped shop or in the field,

you will get trained service technicians

using the latest technology and tools.Selection. Make detailed comparisons ofthe machines you are considering before

you buy. How long do components

last? What is the cost of preventive

maintenance? What is the true cost of

lost production? Your Cat Dealer can

give you answers to these questions.

Purchase. Consider the financing optionsavailable as well as day-to-day operating

costs. This is also the time to look at

dealer services which can be included

in the cost of the machine to yield lowerequipment owning and operating costs

over the long run.

Maintenance. More and more equipment

buyers are planning for effective

maintenance before buying equipment.

Choose from your dealers wide range

of maintenance services at the time of

your purchase. Repair option programs

guarantee the cost of repairs up front.

Diagnostic programs such as Scheduled

Oil Sampling and Technical Analysis

help avoid unscheduled repairs.Operation. Improving operatingtechniques can boost your profits.

Your Cat Dealer has training videotapes,

literature, and other ideas to help you

increase productivity.

16

Total Customer SupportYour Caterpillar dealer offers a wide range of services which can be set up with a Customer

Support Agreement. A customized plan, from PM service to total machine maintenance, with

flexible financing, allows for optimal return on investment.


17/2417973C Track Loader specifications

Drive System

Type Hydrostatic drive with infinite

machine speeds up to 10 km/h

(6.2 mph)

Drive Pump Two, variable-displacement,

slipper-type axial piston pumps

Track Motor Two, variable-displacement,

bent axis piston motors

Relief Valve Setting 44 000 kPa 6,380 psi

Hydraulic System Equipment

Type Vane

Output 335 L/min 88.5 gal/min

Main Relief Valve Setting 19 000 kPa 2,755 psi

Lift Cylinders Bore 165 mm 6.5 in

Lift Cylinders Stroke 935 mm 36.8 in

Tilt Cylinders Bore 140 mm 5.5 in

Tilt Cylinders Stroke 633 mm 24.9 in

Hydraulic System Pilot

Output Maximum 12 L/min 3.2 gal/min

Relief Valve Setting 2400 kPa 348 psi

Cycle Time Raise 6.7 Seconds

Cycle Time Dump 5.1 Seconds

Cycle Time Lower, Empty, 2.9 Seconds

Float Down

Service Refill Capacities

Fuel Tank 430 L 113 gal

Cooling System 43 L 11 gal

Crankcase (with Filter) 29 L 7.66 gal

Final Drives (each) 28.5 L 7.5 gal

Hydraulic Tank 67 L 17.7 gal

Pump Drive Box 3.8 L 1 gal

Pivot Shaft 3 L 0.8 gal

Hydraulic System 169 L 44.6 gal

Hydrostatic Drive System 83 L 21.9 gal

Engine

Engine Model Cat C9

Net Flywheel Power 178 kW 239 hp

Net Power Caterpillar 178 kW 239 hp

Net Power ISO 9249 178 kW 239 hp

Net Power SAE J1349 178 kW 239 hp

Net Power EEC 80/1269 178 kW 239 hp

Bore 112 mm 4.41 in

Stroke 149 mm 5.87 inDisplacement 8.8 L 537 in3

Cat C9 engine with ACERT Technology to meet U.S. EPA

Tier 3 (Jan 2006), European Union Stage IIIA 97/68/EC

(Jan 2006) and Japan Ministry of Land, Infrastructure and

Transport (Oct 2006) emissions.

Engine ratings at 2,150 rpm.

Net power advertised is the power available at the flywheel

when the engine is equipped with fan, air cleaner, muffler,

and alternator.

No derating required up to 4572 m (15,000 ft) altitude.

Undercarriage

Track Shoe Type Double Grouser,

Extreme Service

Track Shoe Width Standard 500 mm 19.7 in

Track Shoe Width Optional 675 mm 26.6 in

Track Rollers Each Side 7

Number of Shoes Each Side 40

Track on Ground 2930 mm 115 in

Ground Contact Area Standard Shoe 2.93 m2 4,542 in2

Ground Contact Area Optional Shoe 3.96 m2 6,138 in2

Ground Pressure Standard Shoe 88.3 kPa 12.8 psi

Ground Pressure Optional Shoe 65.3 kPa 9.4 psi

Grouser Height Double Grouser 49 mm 1.93 in

Track Gauge 2080 mm 82 in

Wide Gauge Arrangement available for lower ground

pressure applications.

Ground pressure is calculated using operating weight

of machine with GP bucket, teeth and segments.


18/2418 973C Track Loader specifications

Ripper Specifications

Type Radial

Number of Pockets 3

Overall Width/Beam 2200 mm 86 in

Shank Cross Section 74 175 mm 2.9 6.9 in

Ground Clearance 670 mm 26 in

Penetration 428 mm 17 in

Ripping Width 2000 mm 78.74 in

Cylinders Bore 127 mm 5 inCylinders Stroke 365 mm 14.4 in

Addition to Machine Length due to 1875 mm 73.8 in

Ripper (in Transportation Position)

Standards

ROPS (Rollover Protective Structure) offered by Caterpillar

for the machine meets ROPS criteria SAE J397 OCT95,

SAE J1040 MAY94, ISO 3164:1995, ISO 3471:1994.

FOPS (Falling Object Protective Structure) meets

SAE J231 JAN81, ISO 3449:1992 Level II.

Brakes meet the standard SAE J1026 APR90, ISO 10265:1998.

The operator sound exposure Leq (equivalent sound pressure

level) measured according to the work cycle procedures

specified in ANSI/SAE J1166 MAY90 is 85 dB(A), for cab offered

by Caterpillar, when properly installed and maintained and

tested with the doors and windows closed.

Hearing protection may be needed when operating with an

open operator station and cab (when not properly maintained

or doors/windows open) for extended periods or in a noisy

environment.

The exterior sound power level for the standard machine

meets the sound directive 2000/14/EC.

Electrical System

Type 24V DC

Battery Capacity 1100 CCA

Battery Voltage 12

Battery Quantity 2

Alternator 65-amp, Heavy-duty

Brushless

Weights

Operating Weight 26 373 kg 58,142 lb

Shipping Weight Without Bucket 24 263 kg 53,490 lb

Operating Weight: Includes coolant, lubricants, 100% fuel tank,

ROPS/FOPS cab, General Purpose Bucket with long bolt-on

teeth and segments and 75 kg (65 lb) operator.

Shipping Weight: Includes coolant, lubricants, 10% fuel tank,

ROPS/FOPS cab and no bucket.

Buckets

Capacity General Purpose 3.2 m3 4.19 yd3

Capacity Multi-Purpose 2.9 m3 3.79 yd3

Bucket Width General Purpose 2845 mm 112 in

Bucket Width Multi-Purpose 2710 mm 107 in

Bucket capacities are with long bolt-on teeth and segments.

Bucket widths are based on a bare bucket.

Operating Specifications

Max. Travel Speed 10 km/h 6.2 mph



1 Overall machine width without bucket:

with standard tracks 500 mm (19.7 in shoes) 2580 mm (102 in)

with wide tracks 675 mm (26.6 in shoes) 2755 mm (108.46 in)

2 Ground clearance from face of shoe 457 mm (17.9 in)

Grading angle 69

3 Machine height to top of cab 3500 mm (137.8 in)

4 Length to front of track 5178 mm (203.8 in)

5 Overall machine length N

6 Carry position approach angle 15

7 Digging depth N

8 Maximum rollback at ground N

9 Maximum rollback at carry position N

10 Bucket height in carry position N

11 Reach at full lift height N

12 S.A.E. specified dump angle 45 (46 max.)

13 Maximum rollback, fully raised 58

14 Dump clearance at full lift height and 45 discharge N

15 Height to bucket hinge pin 4235 mm (166.7 in)

16 Overall machine height, bucket fully raised N

17 Height to top of seat with headrest 2970 mm (117 in)

18 Height to top of stack 2989 mm (118 in)

N Dimensions vary with bucket. Refer to Operating Specifications chart.

DimensionsAll dimensions are subject to change without notice.

18

2

11

6

317

10

7

9

8

12

13

16

15

14

41

5



Rated bucket capacity

(Nominal heaped)

Struck capacity

Bucket width overall

Bucket weight

Dump clearance at full

lift and 45 discharge

Reach at 45 discharge angle

and 2133 mm (84 in) clearance

Reach at full lift and

45 discharge

Digging depth

Maximum rollback at ground

Maximum rollback at carry position

Bucket height in carry position

Overall machine length

Bucket level on ground

Overall machine height

with bucket at full raise

Static tipping load

Breakout force with tilt cylinders

Bucket level at ground

Operating weight*

2.8 3.2 3.2 3.2 2.5 2.6 2.9 2.9

3.66 4.19 4.19 4.19 3.66 3.4 3.79 3.79

2.41 2.77 2.77 2.46 2.46 2.19 2.56 2.563.15 3.62 3.62 3.22 3.22 2.86 3.35 3.35

2845 2845 2845 2934 2705 2710 2762 2710

112 112 112 116 107 107 109 107

1745 2103 1988 1914 1974 2755 3027 3012

3,848 4,638 4,384 4,221 4,353 6,074 6,673 6,640

3358 3154 3281 3154 3032 3049 2828 2966

132 124 129 124 119 120 111 116

1992 2096 2031 2096 2009 1832 1936 1871

78 82 80 82 79 72 76 73

1313 1482 1357 1482 1451 1261 1403 1293

51 58 53 58 57 49 55 50

92 143 122 92 92 200 254 230

3.6 5.6 4.8 3.6 3.6 7.9 9.1 9.0

42 43 43 43 43 45 46 46

50 50 50 50 50 51 51 51

505 505 505 505 505 602 602 602

20 20 20 20 20 24 24 24

7092 7362 7175 7362 7541 7333 7591 7415

279 290 282 290 297 289 299 292

5692 5692 5692 5692 5742 5801 5801 5801

224 224 224 224 226 228 228 228

20 249 19 747 19 908 20 010 19 195 18 786 18 842

44,649 43,542 43,897 44,122 42,318 41,416 41,539

213.3 194.5 195.7 181.3 173.9 159.7 161.1

47,992 43,762 44,032 40,792 39,127 35,932 36,247

26 373 26 731 26 616 26 542 26 602 27 432 27 704 27 689

58,153 58,941 58,688 58,525 58,657 60,477 61,077 61,044

m3

yd3

m3

yd3

mm

in

kg

lb

mm

in

mm

in

mm

in

mm

in

Deg

Deg

mm

in

mm

in

mm

in

kg

lb

kN

lb

kg

lb

General purposebucket

Rockbucket

Bare

8, Bolt-onlong teeth

& segments

Bolt-oncuttingedge

8, Weld-onlong teeth

8, Weld-onlong teeth

* Includes coolant, lubricants, full fuel tank, ROPS cab, bucket and 75 kg/165 lb operator.

Specifications and ratings conform to all applicable standards recommended by the Society of Automotive Engineers.SAE Standard J732 JUN92 and SAE Standard J742 FEB85 govern loader ratings.

Ripper with 3 shanks (bumper removed) +672 kg +1,482 lb +208 kg +458.6 lb

Rear bumper (removal) 572 kg 1,261 lb 1339 kg 2,952.5 lb

Change InOperating Weight

Change In StaticTipping Load

NOTE: Machine stability can be affected by the addition of other attachments. Add or subtract to/from machine operating weight andstatic tipping load. English measurements obtained from converting metric to English and rounding off.

Operating Specifications

Bare

8, Bolt-onlong teeth

& segments

Bolt-oncuttingedge

Multi-purposebucket



Standard EquipmentStandard equipment may vary. Consult your Caterpillar dealer for details.

OPERATOR ENVIRONMENT

Air conditioner

Armrests, adjustable

Ashtray, lighter (24-volt)Cab, pressurized and sound suppressed

tinted glass, (ROPS/FOPS)

Coat hook

Control, single lever, pilot operated

for implement hydraulics

Cup holder

Heater and defroster

Horn

Instrumentation, gauges

Engine coolant temperature

Fuel level

Hydraulic oil temperature

Power train oil temperatureInstrumentation, alert indicators

Charge filter bypass

Charge oil pressure

Check engine

Electrical charging (too high/too low)

Engine oil pressure

Ether aid activated

Fuel pressure

Hydrostatic drive system

Low fuel

Pump drive (splitter box) oil temperature

Key start

Mirror, review (internal)Parking brake switch, brake-on indicator light

Radio ready, 24-volt to 12-volt converter,

speakers, antenna, mounting bracket

Seat, (cloth) air-suspension with side-to-side isolator

Seat belt, retractable, 50 mm (2 in)

Sound Suppression, Spectator

Speed mode switch, (Work-Travel)

Storage compartments under armrests

(lockable on right armrest)

Wipers/washers (front and rear)

Intermittent front wiper

ELECTRICAL

Alarm, back-up

Alternator (24-volt, 65-amp)

Batteries, 1100 CCA, high-output, maintenance freeElectronic Hydrostatic Control (EHC)

Caterpillar Monitoring System (CMS)

Lighting system (halogen), (4) 2 forward, 2 rear

Power outlet, 12-volt

Starting motor, 24-volt electric

POWER TRAIN

Adjustable steering pedal

Blower fan

Engine, Cat C9 engine with ACERT Technology,

direct injection, ATAAC, turbocharged,

with ADEM A4 controller

Filters, air (radial seal)Fuel priming pump, electric

Muffler

Pre-cleaner, air intake

Radiator guard, HD, perforated, swing-out, latched grill

UNDERCARRIAGE

Sprocket guards

Sprocket rims, replaceable bolt-on Tough Steel segments

Track, Caterpillar EWL (Extended Wear Life) sealed and

lubricated (40) sections

Track adjuster, hydraulic

Track guiding guards, end section

Track roller guardTrack idlers, lifetime lubricated

Track rollers (7), one upper carrier roller

lifetime lubricated

Track roller frame, oscillating

Track shoes, 500 mm (20 in), double grouser,

extreme service

OTHER STANDARD EQUIPMENT

Bottom Guard

Bucket positioner, automatic

Bumper, rear

Coolant, extended life

Cooler, hydraulic oil

Crankcase guard, full

Engine enclosure, lockable doors

Hitch, front retrieval

Lift kickout, automatic

Starting Aid, ether

Vandalism protection fuel tank cap and radiator cap

with padlocks

XT Hoses



Optional EquipmentOptional equipment may vary. Consult your Caterpillar dealer for details.

Controls (for equipment hydraulic system)

Two-lever control

3rd valve for use with lines for front and rear attachments

Diverter valve for use when both front and rear linesare required

Counterweights 2 arrangements

Medium

Heavy

Drawbar hitch

Guards:

Cab lights

Idler

Lift cylinders

Seal protection final drive, pivot shaft, and idler seals

Product link

Ripper/scarifier, three ripper shanks (bumper removed)

Starting aids:Engine coolant heater, 120- or 220-volt

Track shoes:

500 mm (20 in) double bar grouser, RBT

675 mm (27 in) double bar grouser, RBT

Anti-theft, Machine Security System (MSS)

Buckets:

General Purpose (GP) 2.8 m3 (3.6 yd3)

General Purpose (GP) with weld-on flush-mountedadapters 2.8 m3 (3.7 yd3)

Multi-purpose (MP) 2.9 m3 (3.8 yd3)

Bucket cutting edge, reversible, with end bits, sharpened, bolt-on

GP bucket

MP bucket

Rock with 8 weld-on, flush mounted adapters, spade spade

cutting edge 2.5 m3 (3.2 yd3)

Bucket edge segments, bolt-on, for GP and MP buckets

Bucket teeth, set of 8 bolt-on adapters and tips (K90), includes

corner adapters

General duty, for GP bucket

General duty, for MP bucket

Extra duty, for GP bucketExtra duty, for MP bucket

Penetration, for GP bucket

Penetration, for MP bucket

Bumper (removed)


23/24973C Track Loader specifications 23

Notes


24/24

For more complete information on Cat products, dealer services

and industry solutions, visit us on the web at www.cat.com

2006 Caterpilla

All Rights Reserved

Printed in U.S.A

Materials and specifications are subject to change without notice

Featured machines in photos may include additional equipment

See your Caterpillar dealer for available options

CAT, CATERPILLAR, their respective logos, Caterpillar Yellow and the

POWER EDGE trade dress, as well as corporate and product identity used herein

are trademarks of Caterpillar and may not be used without permission

AEHQ5678-02 (12-06)

Replaces AEHQ5678-01

973C Track Loader

caterpillar 973c

Documents