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Engine Cat® C6.6 ACERT™
Net Power (ISO 9249) at 2000 rpm 110 kW/150 hp
Bucket Capacities
General Purpose 1.85 m3
Multi-Purpose 1.6 m3
Operating Weight 15 600 kg
953DTrack Loader
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953D Track Loader
Increased horsepower, excellent maneuverability, redesigned operator cab for comfort, the revolutionarySystemOne™ undercarriage and the new implement system increase your productivity, drastically reduceyour operating costs and make the new 953Dunsurpassed in versatility.
Versatility
A large choice of buckets, GroundEngaging Tools (GET), and attachments,allow configuration of the 953D formaximum performance in any job.pg. 14
SystemOne™ Undercarriage
The revolutionary Cat SystemOneUndercarriage provides maximumundercarriage life and reliability no matterthe application, environment or underfootconditions. Built to last longer and requireless maintenance it ensures a dramaticdrop in owning and operating costs. pg. 12
Monitoring System
The 953D incorporates a new smooth,rounded, molded gauge cluster withintegral defroster vents. Together withCat® Messenger, it displays all necessaryinformation within the operator’s normalline of sight. pg. 8
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Operator Station
Experience a high level of efficiency,comfort and productivity with the newD-series cab. The cab features a newgauge cluster, a fully air-suspensionseat, the new seat mounted controls,an automatic air climate control andprovides excellent visibility. pg. 6
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Engine
The Cat® C6.6 ACERT™ engineutilizes the Caterpillar® Common Railfuel delivery system. Designed forperformance, durability, serviceability,and fuel economy, it meets EU StageIIIA emission standards. pg. 4
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✔New Feature
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Special Application Arrangements
Special arrangements – Waste Handling,Wide Gauge and more, are available orcan be designed on request, to allow the953D to work in special applications.pg. 15
Serviceability and Customer Support
The new 953D is equipped with a tiltablecab that allows complete service of thehydraulic system. Daily maintenancechecks are performed from the machine’sright side. pg. 16
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Structure
The D-series Main Frame and LoaderTower provide durability, resistanceto twisting, and a solid base for allcomponents. The Z-bar linkage offershigh breakout force and fast dumpspeed for enhanced productivity. pg. 11
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Implement System
The 953D features a load sensingimplement pump which reduces enginepower consumption. The new electro-hydraulic implement controls lower theoperator’s effort. And the new positionsensing cylinders allow setting detentsat any positions from the cab. pg. 10
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Hydrostatic Drive
The closed loop hydrostatic drivewith electronic control provides precisemodulation for quick, smooth operationand superior maneuverability.Shorter cycle times, high efficiency,and excellent maneuverability resultsin increased productivity. pg. 9
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EngineProvides power, reliability and acts as a working counterweight in the rear of the machine, for optimum machine balance.
Cat C6.6 ACERT. The Cat C6.6 is a 6.6liter displacement, six-cylinder, in-lineconfigured engine that utilizes theCaterpillar Common Rail fuel systemfor fuel delivery. It uses ACERTTechnology, a series of Caterpillarengineered innovations that provideadvanced electronic control, precisionfuel delivery and refined airmanagement, resulting in outstandingperformance and lower emissions.The C6.6 with ACERT Technology offersa compact design with big, heavy-dutyengine features for outstanding durability,reliability and performance. The C6.6incorporates a new cross flow cylinderhead design, 4 valve head and an
ADEM™ A4 electronic controller.The C6.6 also features proven cylinderblock, pistons and crankshaft andincorporates the common rail fuelsystem. ACERT Technology enablesthe C6.6 engine to meet the EuropeanUnion Stage IIIA emissions standards,which dramatically reduce nitrogenoxide (NOx) and other emissions. ACERT Technology used on the C6.6consists of three basic building blocksystems: electronic control, fueldelivery, and air management. Thesehave been refined to control thecombustion process to a higher degreethan ever before possible.
Electronic control ADEM A4.The Advanced Diesel EngineManagement – Electronic ControlModule continuously monitors importantengine conditions and functions. It usessensors throughout the engine to regulatefuel delivery and all other engine systemsthat require input to manage load andperformance. ADEM A4 is the brainbehind engine responsiveness, self-diagnosis, controlling emissions, andfuel economy.
Fuel System. Through multiple injectionfuel delivery, fuel is introduced in thecombustion chamber in a numberof precisely controlled microburst.Injecting fuel in this way allows forprecise shaping of the combustioncycle. The ADEM A4 module directsthe injectors to deliver precise quantitiesof fuel at exactly the right times duringcombustion cycle. This process provides precise controlover a range of combustion variables,which can be regulated to producehigher performance with feweremissions. Fuel is delivered at highpressure to each combustion chamberthrough a Caterpillar designed injectorlinked to a high pressure Common Rail.
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Air Management. Air managementis a key concept in optimizing engineperformance and controlling emissions.Engines must breathe clean cool air inorder to perform. To aid this, the C6.6uses a turbocharger fitted with a smartwaste gate to give precise and reliablecontrol of the boost pressure. A newcross-flow design in the cylinder headfacilitates air movement, while tightertolerances between the piston andcylinder liner are reducing blow by gases.
Fuel pump. The C6.6 uses an oil-lubricated high-pressure fuel pump tofeed the common rail. By using an oil-lubricated fuel pump, the C6.6 hasbeen designed to be more tolerantof alternative fuels.
Fuel Priming Pump. An electrical fuel-priming pump, standard, is locatedbetween the fuel tank and the combinedwater separator/primary fuel filter.
Hydraulic on-demand fan. The fan is ahydraulic demand type one with optionalreversible function, operating in suckermode. It gives the best efficiency andavoids also sucking the dust and debriscoming from the outside into thecooling package. The complete cooling package has beendesigned for a very easy maintenancewith a complete accessibility to thecores for cleaning (fan door swing outopening, latches), and a very high safetylevel.
Starting System. The Electronic SpeedSelector Switch (A), a “rocker” switchlocated on the right console, sets theengine rpm. The ADEM A4 enginecontroller will always start the enginein low idle. The engine rpm can be seenon the digital display of the instrumentcluster in the gage cluster or in theperformance menu in Messenger.
Air-to-Air After cooler (ATAAC).The air-to-air after cooler is a single pass,aluminum, heat exchanger or coolingsystem for the pressurized air comingfrom the turbocharger, before it entersthe engine intake manifold. Cooling thepressurized air from the turbochargermakes the engine intake air even denser.The increased air volume in the cylindersresults in more power, improvedcombustion, and reduced exhaustemissions.
Cooling module architecture. The coolingsystem is a single cooling unit, whichincludes Radiator, ATAAC, Oil coolerand Fan installation. The cooling moduleis located at the rear of the loader, awayfrom dust and debris stirred up by thebucket while the machine is working.
Rear Engine Location. Rear enginelocation allows excellent forwardvisibility, while serving as a workingcounterweight. It also helps reduceradiator plugging while providing easyservice access to the engine and othermajor components.
Serviceability. Unit injectors and highpressure fuel lines can be servicedindividually, without the needto service the whole fuel system.
Engine Installation. The engine isinstalled using rubber mounts to reducethe transfer of engine vibration to theframe and cab, lowering operatorvibration, sound levels, and fatigue.
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Operator StationDesigned for operator comfort, convenience, and ease of operation throughout the workday.
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Caterpillar Air-suspension Seat.The Caterpillar air-suspension seat, withside-to-side isolator, is ergonomicallydesigned and fully adjustable formaximum operator comfort and control.Retractable seat belt is 75 mm wide forpositive, comfortable restraint.
Seat mounted controls. Seat mountedcontrols provide less vibration for theoperator and a combined seat andcontrols adjustment.
Armrests. The right hand side consolefeatures an adjustable armrest, wrist restand joystick mount. The left armrestheight is adjustable.Total adjustability lets the operatorcustomize the armrests to the mostcomfortable position.
Heating and Air Conditioning.Air conditioning is standard on 953D.Both the air conditioning and the heaterdeliver filtered, pressurized, temperature-controlled air to the operator and windowsthrough 10 louvered vents.
Messenger (Optional). Messenger is anew electronic monitoring system withreal-time, visual feedback on engine andmachine operating conditions. It providesinformation on diagnostic data,maintenance, and allows operatingsettings such as implement reactions.
Hydrostatic Drive System Controls.The system controls allow quickspeed and directional changes froma single control lever for maximummaneuverability. Steering pedals can beadjusted from 35° to 50° depending onoperator preference and allow precisecontrol of each track independently andon-demand counter rotation. The brakepedal supplements dynamic hydraulicbraking provided by the hydrostaticdrive system.
Speed Switches. The speed mode switchallows the operator to choose between“work mode” and “travel mode” to bestmatch the machine speed to various jobconditions. Switching between traveland work mode takes effect immediately.
Electro-hydraulic implements controls.The new electro hydraulic implementcontrols on the 953D provide the operatorwith responsive, smooth and precisecontrol of bucket and lift arms. Choice ofjoystick or two-lever control is availablefor bucket lift and dump.
Kickout settings. Automatic kickoutsare part of the electro-hydraulic controls;adjust from inside the cab with a simplerocker switch. Kickout stops arehydraulically cushioned for greateroperator comfort and less materialspillage.
Viewing Area. Large windows use tintedglass to reduce glare and provide anexcellent view to the bucket, tracks, andaround the engine enclosure to the rear.
Rearview Mirror. The rearview mirroris located above the front windshield,maximizing the operator’s visibility.
Dome Light. A dome light is locatedin the cab headliner.
Radio Installation Arrangement.A standard feature in the cab is a RadioInstallation, which includes a 24-volt to12-volt converter and speakers. A Caterpillar heavy-duty (AM/FM)radio/CD player and satellite radiosare available from dealers.
Storage spaces. Storage spaces includea removable lunch box, a beverage holderand storage and a coat holder.
Working lights. Up to eight workinglights are available on the 953D.
Door release lever. The door’s releaselever is accessible from the ground andthe seat to unlock the door conveniently.
Machine Security System.Eliminate machine theft and unauthorizedusage with the Cat Machine SecuritySystem (MSS). It is integrated into themachine’s electronic system and canprotect your equipment by requiring auniquely coded key to start the machine.
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Monitoring SystemThe gauge cluster provides all necessary functions and information within the operator’snormal line of sight.
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The 953D gauge cluster display.The gauge cluster provides all necessaryinformation within the operator’s normalline of sight.
The 953D gauge cluster display includes:• Four direct reading gauges • Fifteen alert indicators • A numeric message display • Gauge Cluster
Alert indicators. The fifteen alertindicators used on the 953D are: 1. Reversible fan 2. Water separator3. Fuel filters plugging4. Fuel level5. Engine air filter plugging6. Machine security system7. Ether starting aid8. Warning lamp9. Parking brake10. Operator presence11. Hydraulic lockout12. Hydraulic oil filter13. Bucket float14. Lift kickout/lower kickout15. Bucket leveler
Gage cluster-self test. The gauge clusterself-test verifies that the main displaymodule is operating properly every timethe key start switch is turned from the“off” to the “on” position.
If the machine is not equipped withMessenger, the numeric display willshow fault codes.
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Hydrostatic DriveThe electronically controlled hydrostatic drive helps provide quick response for shortercycle times and increased productivity.
The electronically controlled hydrostaticdrive system automatically matchesmachine travel speed to the combinedtravel and implement loads on themachine, enabling maximum travelspeed, up to the speed selected bythe operator.
Electronic Hydrostatic Control (EHC).Hydrostatic system has integratedelectro-hydraulic controls, sized foroptimum performance and efficiency.Position in the machine providesease of access for serviceability.
Variable Displacement Pumps and DriveMotors. Variable displacement pumps anddrive motors are electronically controlledby the EHC, offering high efficiency andprecise travel. Each track is independentlydriven by a separate hydraulic circuitconsisting of one pump, connectedby Cat XT-6™ hydraulic hoseand couplings to a piston motor.
Travel Speeds. Travel speeds areinfinitely variable between zero and topspeed. Two speed modes “work” and“travel”, provide two different speedranges to best match machine speed andtorque to the job conditions for maximumproductivity. Maximum travel speed is10 kph when the switch is set in thetravel position.
Speed-Direction Control Lever (SDL).The operator controls the speed of themachine and the direction of travel witha single “Speed-Direction control Lever”(SDL) located on the left console.The “reverse V” pattern of the SDL isdesigned to prevent an accidental full-speed-forward command when theloader encounters sudden resistancewhile traveling forward.
Braking. Braking is accomplished bymoving the Speed-Direction control leveron the left console to a slower position(closer to the top of the “Reverse V”),or all the way to the “Brakes-on” position(at the point of the “Reverse V”).The center foot pedal can alsobe used for emergency braking.
Steering. Steering is accomplished bychanging relative pump flows and/ormotor displacements, which causes onetrack to rotate slower than the other track.A more aggressive steering command(pushing one foot pedal down farther)will cause one track to stop/reversewhile the other track continues to rotate.
Maneuverability. The hydrostatic drivetrain also offers independent powerand control of each track, with fastacceleration, infinitely variable speeds,and automatic, on-the-go, directionchanges for each track. The operatorcan command smooth “power turns”or even counter-rotation of the tracksby simply pushing one of the steeringpedals. The Caterpillar hydrostaticdrive system manages itself, freeingthe operator to concentrate on usingthe Cat track loader’s superb agility,speed, and maneuverability to domore productive work.
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Implement SystemWork smart and move more.
Electro-hydraulic Implement Controls.Electro hydraulic implement controlson the 953D provide the operator withresponsive, smooth and precise controlof bucket and lift arms. They also allowthe operator to set personal parametersthrough the optional Messenger such asimplement reactions.
Automatic kickouts. The standardprogrammable automatic kick-outsprovide flexibility and productivityfor precise load and dump target heights.Tilt and lift kickouts are set by positioningthe bucket or work tool and settinga rocker switch in the cab.
Load sensing hydraulics. The 953Dfeatures a load sensing hydraulic systemthat automatically adjusts to operatingconditions to provide only the hydraulicflow required by the implement forimproved fuel efficiency.
Position sensing cylinder.Position sensing cylinders allows to:• Set lift and tilt kickouts at any
positions according to the applicationswithout operator leaving the cab
• Advanced automatic features as dropcatch (accelerate and stop smoothly)and snubbing (smooths start and stopcylinder motion)
• Set tilt and lift kickouts• Sensing of the cylinder end of stroke• Prevent unintended motion.
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StructureDurable slab section frame and loader tower with increased space for larger components.
Mainframe and Loader Tower. The 953DMain Frame and Loader Tower is a single,slab rails with reinforced crossings, withcastings and forgings incorporated atpoints of high stress, to distribute thosestresses over wider areas for longstructural life.
Design. The part of the frame below theengine and operator’s station consists oftwo slab-section side-frame rails, whichare joined at the rear by a box-sectioncross member. The Slab-section 953Dframe resists twisting and impact forcesto provide a solid foundation for all thecomponents it supports. Mounting pointsfor the final drives, pivot shafts, andplatform are built into each mainframeside rail.
Frame side plates. The frame side platesare made of mild steel, which providesstrength and resists shock and bendingstresses. “Deep penetrating”, “Backed up”welds are used for maximum strength.
Loader tower. The loader tower is integralwith the basic main frame. The one slabplate continues forward to become oneside of the loader tower in order to providesmooth transition to loads from linkagesto the mainframe rails. The loader towerprovides a solid mount for lift arms,lift cylinders, and Z-bar tilt cylinder.A box-section cross member is weldedbelow the two inboard loader towerplates to add strength. The equalizerbar, which connects the track rollerframes to the main frame, is mountedbelow the loader tower. The result is anintegrated main frame and loader towerassembly which will accommodatemaximum loads capability. The engineis at the rear, where its weight serves asa “working counterweight” to balance themachine for full bucket loads withoutadding inefficient “dead” weight.
Z-Bar linkage. Breakout force isexceptionally high due to mechanicaladvantage of Z-bar linkage design, andhydraulic pressure applied to the headend of the tilt cylinder. Using a singletilt cylinder and linkage provides theoperator a better view of the workarea, bucket, and cutting edge.
Sealed Loader Linkage. The 953D linkagehas fewer grease points compared to otherlinkage designs because every pin jointis sealed to keep grease in and dirt out.Fewer grease points and sealed pinsmeans less downtime for maintenanceallowing more working hours betweenservicing.
Lift Arms. The two arms are welded intoa single unit, using a weld-fabricatedcross-tube. The tilt link (Dog Bone) is a singleforging. The 953D linkage designcombines the advantages of strengthand durability with minimum structuralweight, so that productivity is notpenalized by excess weight inthe linkage.
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SystemOne™ UndercarriageThe SystemOne undercarriage was designed exclusively for Caterpillar machines to reduce customers’ operating costs, downtime and maintenance intervals.
Revolutionary Undercarriage.SystemOne™ is the latest innovation ina century of undercarriage leadership.Nearly every major undercarriageimprovement over the last 100 years hascome from Caterpillar. It was designedto reduce customers’ operating costsand maintenance intervals. The revolutionary Cat SystemOneUndercarriage provides maximumundercarriage life and reliability nomatter the application, environmentor underfoot conditions. Built to lastlonger and require less maintenanceit ensures a dramatic drop inoperating costs.
Track Roller Frames. The track rollerframes are a welded, box section design,which provides strength and resistanceto bending without adding extra weight.The track roller frames are pinned at therear to the loader main frame with pivotshafts, which allow the front of the trackroller frames to swing or oscillate aboutthe pivot shafts at the rear.
Guiding System. Better, more rigidguiding. The guiding system contactslink rails instead of pin ends and helpskeep the track within the roller system.
Rollers. The 953D has six track rollers,which spread machine weight over alarge area and a single upper carrierroller on each side mounts to themachine mainframe. The rollers and carrier rollers havebeen redesigned to run with the system.This will lead directly to better guiding.All rollers in this new system are allsingle flange rollers with increasedflange diameter. This will also increaseyour guiding capability.
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Cartridge Joints. Factory-sealed cartridgejoints are welded to control end play.They offer improved seal integritythrough an innovative new sealingsystem and do not depend on the linkinterface to remain sealed. As with allnew Cat undercarriage products,they are filled with special oils.
Track Shoes. The shoes for SystemOne™are unique to this system. Several trackshoe types tailor your machine forwork in all underfoot conditions.The SystemOne links have a straightrather than offset bolt hole pattern.Double grouser standard or narrowtrack shoes are available. The standardshoe can be fitted with center hole toreduce material packing.
Long-life Sprockets. The sprockets, thanksto the rotating bushing design track, willbe able to be reused over the life of acouple of undercarriages. This helpsto cut down on replacement cost.
Oscillating Undercarriage.The undercarriage on the 953D featuresan “oscillating track roller frame design”which decreases ground shock to themachine, increases machine stability, andprovides a smoother, more comfortableride for the operator. Oscillating trackroller frames keep more of the track onthe ground when operating on uneventerrain, which increases machine stability,felt by the operator, allowing fastermachine operation, increased machineproductivity and reduced operator fatigue.
Idlers. New redesigned idlers, specificallyoptimized for the track type loaders tomaximize performance and comfort.
Track Adjuster. The track adjuster andmechanical recoil system uses a largerecoil spring and grease filled adjustmentcylinder, which allows the idler to moveforward and back to maintain propertrack tension as it absorbs undercarriageshock loads.
Equalizer Bar. The equalizer bar is pinnedin its center to the machine mainframeand at the ends to each track roller frame.This allows the forward ends of the trackroller frames to oscillate, or movevertically, to keep more track on theground in uneven underfoot conditions.The equalizer bar also provides a morestable work platform for the operator,who will be comfortable working atfaster speeds for increased productivity.
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VersatilityThe large variety of tasks an operator can perform with the standard machine and Work Tools has lead to the Caterpillar Track Loader’s reputation for versatility.
General Purpose Bucket. The GeneralPurpose (GP) bucket is designed forexcellent loadability and long life in abroad range of applications such as hardbank excavating, stripping and stockpileloading. High-strength, low-alloysteel helps the bucket resist dentsand abrasions.The bucket is made of high-strength,low-alloy steel plate for resistanceto dents and abrasions. The shell-tinedesign in the bucket back and flooroffers increased structural strength.
Multi-Purpose Bucket. The Multi-Purpose(MP) bucket combines the performancesof a standard bucket, dozer blade andclamp. The bucket provides maximumversatility combined with strength tohandle a broad range of applications,such as loading, stripping topsoil,clearing, bulldozing, picking updebris and fine grading.
General Purpose Landfill Bucket.With the integrated trash-rack, theGeneral Purpose Landfill (GP Landfill)bucket becomes ideal for digging,loading and carrying as well as dozingand spreading material at landfills,or loading refuse at a transfer station.
Multi-Purpose Landfill Bucket.The Multi-Purpose Landfill (MP Landfill)bucket combines the versatility ofa Multi-Purpose bucket with theperformance of a landfill design.Constructed with a trash-rack forincreased capacity, extra strengthand better load retention. Ideal forapplications in the harsh refuse market,whether digging or spreading materialat the landfill or grasping and loadingrefuse at a transfer station.
Bucket Protection Options. Caterpillaroffers several types of adapters, tips, andcutting edges, which increase bucket lifeand maximize performance.
K Series™ Tooth System. The K-Seriestooth system provides longer tip andadapter life, faster cycle time with greaterbucket fills and reduced machine strain.Therefore, it contributes to the reductionof operating costs.Easy and convenient during theinstallation, this new system providesa very good response to the needof reliability and durabilityof such components.
Longer Tooth Life. Tips are installed witha slight twist and secured with a one-pieceretainer, providing less tip movementand nose wear.
Stable System Geometry. Opposing,sloped rails on the adapter providefull length stabilization with minimalmovement. The tip bears directly on theend of the adapter nose to absorb thrustloads, leading to better tip retention anda longer adapter life.
Easy Installation and Removal.Opposing sloped side rails and flankskeep the tip on the nose as the retainer isbeing installed and removed. The one-piece vertical retainer requires low forceand no special tools, allowing faster andeasier removal and installation, amountingto less machine down time for tip changes.
Sharper Digging Profile. Lower height atthe front and the back of the nose providesa sharper profile. This provides moreproduction, less machine strain andlower cost of machine operation.
Reversible Tips. Each tip ear has a retainergroove with a locking recess. Tips canbe run in one direction, then “flipped,”or reversed, to get the maximum useof wear material from the tip.
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Tip Options. Caterpillar GET offers avariety of tips to better accommodateyour needs in any working environment,whether that is high impact or general-purpose applications.These and other GET options areavailable from your Caterpillar Dealer.
Penetration Tips. Penetration tips areextremely strong and are for use in highimpact and pry-out work such as rock.
General Duty Tips. General duty tips arefor use in most general applications wherebreakage is not a concern.
Extra-duty Tips. Extra-duty tips are foruse in general loading and excavationwork. They have thirty-six percent morewear material than on general duty tips.Provides increased strength, extendedservice life, and low cost-per-hour.
Additional Work Tools. Beyond the GPand MP buckets and the Ripper-scarifieryour Cat dealer offers: Side-DumpBuckets, Landfill Buckets, StraightTrim Blades, Pallet Forks, ExtendibleMaterial Handling Arms, andQuick Couplers.
Ripper-Scarifier. A radial ripper-scarifieris available for the 953D as an attachment.It is mounted with two pins pressedinto each side of the main frame.Two cylinders raise and lower the ripper.The ripper beam has three pockets forholding ripper shanks. The six pins inthe linkage do not require lubrication. The 953D ripper-scarifier is intendedfor ripping frozen ground, asphalt andeasily ripped rock. It is not designedfor hard rock.
Special Application ArrangementsSpecial arrangements improve the 953D’s performance in special applications.
Waste Handling Arrangements.Waste Handling arrangements provideadded protection and are designed tomake the 953D perform well in landfills,or any waste handling applications wherethe machine spreads, compacts, sorts,shreds and crushes materials.
Shiphold Arrangement. The 953D withits low ground pressure and excellentstability works well on top of loosematerials, cleaning the cargo from thesides of the holds and moving it intoposition for the unloading system.Lifting eyes are included so that the 953Dcan be lifted from the dock to the hold.
Wide Gauge. For underfoot conditionsthat require even lower ground pressurethan the standard 953D undercarriagethe gauge of the machine can be widenedby 300 mm and the track shoe widthincreased to 800 mm. The groundpressure is decreased to 43.3 kPa.
Custom Products Arrangements.Other arrangements beyond thoseshown here are available. For othercustom-designed arrangements forspecific applications, contact yourCaterpillar Dealer.
With the addition of certain specialmodifications, the capabilities of the953D can be further expanded to handlesome very harsh working conditions.
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Serviceability and Customer SupportGrouped service points and excellent accessibility make the 953D easy to maintain.
Tiltable Cab. The 953D is equippedwith a tiltable cab. This feature makesthe maintenance and the repairs easier.By tilting the cab, you can access tothe drive train and perform completeservice of the hydraulic system.
Right side compartments.• The fuel tank and the optional quick
fill port are located on the right sidecompartment, below the cab access.
• The two maintenance-free batteries,the machine ECM and the windowwasher reservoir are located on theright side compartment, accessiblefrom the ground.
• The engine compartment has largehinged openings with latches. On thedoor, you can clip a grease gun.
You can access to the followingmaintenance and service points:• Primary and secondary engine air
filter• Engine air pre-cleaner• Water in fuel separator• Fuel filters • Engine crankcase breather filter• Engine oil filter• The sediment pump (option)• The electric fuel-priming pump• The dipstick for the oil level in the
engine crankcase and the fill tube• The electrical disconnect switch
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Left side compartments. Left enginecompartment includes two spin-onhydraulic oil filters that providefiltration for the hydrostatic system.The lower part of the compartment doorcan be used as a step to access the shunttank fill, the air pre-cleaner (ifequipped) and allows easy cleaning ofthe rear window.
Ground Level Shutdown. The EngineControl ECM monitors the status of aswitch that is mounted behind a coverat the rear of the machine, allowing themachine to be shut down from groundlevel in emergency situations.
Cab Air Filter. The cab air filter, thegrouped pressure taps, the cab tilt lockingbar, the optional tilt cylinder and the toolbox are conveniently located below theleft-side cab window.
Hydraulic Tank. The hydraulic tank islocated in the front of the machine. It isaccessible without raising the lift arms.A site gauge allows oil level check fromthe ground.
Fuse Panel. The fuse panel is locatedto the inside of the cab, on the rear rightside console. It includes the ET port.
Easy Diagnosis. The gauge cluster andself-diagnosing Electronic HydraulicControl (EHC) work together to warnagainst faults to reduce downtime.
S•O•S Fluid Taps. Simplifies drawingfluid samples for Scheduled Oil Samplingand reduces sample contamination.
Cooling System. The fan and the grillswing open, providing excellent accessfor clean-out and maintenance. The heavyduty latched grill minimizes debrisbuild-up.
Quick-Connect Fittings. The quick-connect hydraulic grouped pressure tapsallow quick diagnosis of the hydrostaticdrive and the implement hydraulicsystems.
Product Link. This option allows thecustomer or dealer to remotely obtainmachine diagnostics. Product Linkprovides updates on service meter hours,machine condition, machine location,and integrated mapping/route planning.
Complete Customer Support. Cat fieldservice technicians have the experienceand tools necessary to service your loaderon site. Technical experts at the dealershipand Caterpillar can provide additionalassistance to field service techniciansas needed. When on-site repair isn’tenough, Cat dealerships are fullyequipped to service your loader quickly.
18 953D Track Loader specifications
Drive System
TypeHydrostatic drive with infinite machine speeds to 10.0 km/h
Drive PumpTwo variable-displacement, slipper-type axial piston pumps
Track MotorTwo variable-displacement, bend axis motors
Relief Valve Setting 450 bar
Service Refill Capacities
literFuel Tank 323.6Cooling System 31Crankcase (with Filter) 16Final Drives (each) 10.8Hydraulic system (Equipment, Power Train and Tank) 110Hydraulic Tank 68Pump Drive Box 3.8Pivot Shaft 0.7
Electrical System
Type 24V DCBattery
Capacity 950 CCAVoltage 12Quantity 2
Alternator 95 Amps, Heavy-Duty Brushless
Weights
Operating Weight 15 600 kgShipping Weight 15 110 kg
• Operating Weight: Includes coolant, lubricants, 100% fueltank, ROPS/FOPS cab, General Purpose Bucket with long bolt-on teeth and segments and 75 kg operator.
• Shipping Weight: Includes coolant, lubricants, 10% fuel tank,ROPS/FOPS cab and no bucket.
Engine
Cat C6.6 Engine with ACERT TechnologyNet Power
ISO 9249 110 kW/150 hp80/1269/EEC 110 kW/150 hp
Bore 105 mmStroke 127 mmDisplacement 6.6 liter
• All engine horsepower (hp) are metric including front page.• Engine ratings at 2000 rpm.• Meets the European Union Stage III A exhaust emission
regulations.• Net flywheel 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 3000 m altitude.
Undercarriage
Track Shoe Type Double GrouserTrack Shoe Width
Standard 480 mmOptional 380 mm
Track Rollers – Each Side 6Number of Shoes – Each Side 37Track on Ground 2323 mmGround Contact Area
Standard Shoe 2.3 m2
Optional Shoe 1.8 m2
Ground PressureStandard Shoe 0.66 barOptional Shoe 0.85 bar
Grouser Height – Double Grouser 35 mmTrack Gauge 1800 mmLink Pitch 190 mmBushing Type SystemOne
• Wide Gauge Arrangement available for lower groundpressure applications.
• Ground pressure is calculated using operating weightof machine with GP bucket, teeth and segments.
19953D Track Loader specifications
ROPS/FOPS
• ROPS (Rollover Protective Structure) offered by Caterpillar forthe machine meets ROPS criteria ISO 3471:1994 DLV criteriaISO 3164:1995.
• FOPS (Falling Object Protective Structure) meets ISO 3449 APR98 Level II, ISO 3449:1992 Level II, DLV criteriaISO 3164:1995.
Brakes
• Brakes meet ISO 10265:1998.
Sound Level
• The operator sound pressure level measured according to theprocedures specified in ISO 6396:1992 is 74 dB(A) for the caboffered by Caterpillar, when properly installed and maintainedand tested with the doors and windows closed.
• Hearing protection is recommended when operating with anopen operator station and cab (when not properly maintainedor doors/windows open) for extended periods or in noisyenvironment.
• The labeled sound power level is 109 dB(A) measuredaccording to the test procedure and conditions specifiedin 2000/14/EC.
Hydraulic System – Implement
TypeClosed center load sensing/piston
Output 140 L/minMain Relief Valve Setting 280 barCycle Time
Raise 6.1 SecondsDump 1.5 SecondsFloat Down 3 Seconds
Buckets
General PurposeCapacity 1.85 m3
Width 2380 mmMulti-Purpose
Capacity 1.6 m3
Width 2378 mm
• Bucket widths are based on a bare bucket.• Bucket capacities are with long bolt-on teeth and segments.
Operating Specifications
Max. Travel Speed 10 km/h
Ripper Specifications
Type RadialNumber of Pockets 3Overall Width/Beam 2069 mmShank cross section 50 x 109 mmGround Clearance 697 mmPenetration 302 mmRipping Width 1834 mmCylinders
Bore 101.6 mmStroke 270 mm
Addition to Machine Length due to Ripper (in Transportation Position) 453 mm
20 953D Track Loader specifications
16
15
12
6
10
9
1411
13
731
4
182
8
17
5
DimensionsAll dimensions are approximate.
mm
1 Overall machine width without bucket:
with standard tracks – 480 mm shoes 2280
with narrow tracks – 380 mm shoes 2180
2 Machine height to top of cab 3105
3 Length to front of track 4375
4 Overall machine length* 6225
5 Ground clearance 416
6 Digging depth* 132
7 Carry position approach angle 15°
8 Bucket height in carry position 548
9 Maximum rollback at ground 41°
10 Maximum rollback at carry position 48°
11 Reach at full lift height and 45° dump* 1195
12 Clearance at full lift height and 45° dump* 2694
13 Maximum rollback, fully raised 56°
14 Maximum dump, fully raised 55°
Grading angle 74°
15 Height to bucket hinge pin 3610
16 Overall machine height, bucket fully raised 4882
17 Height to top of seat with headrest 2560
18 Height to top of stack 2784
* With general purpose bucket and extra duty teeth.Dimensions vary with bucket. Refer to Operating Specifications chart.
21
kg
kg
m3
m3
m3
m3
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
°
°
mm
°
°
°
kg
kN
kg
kg
kg
kg
Operation Specifications
976 1254 1097 1483 1762 1604 1093
3010 3182 3182 2580 2752 2752 3182
1.72 1.82 1.82 1.50 1.60 1.60 1.82
1.75 1.85 1.85 1.50 1.60 1.60 1.85
1.48 1.57 1.57 1.27 1.35 1.35 1.48
1.45 1.55 1.55 1.25 1.35 1.35 1.45
2392 2485 2395 2378 2471 2395 2438
–
3105 3105 3105 3105 3105 3105 3105
4882 4882 4882 4871 4871 4871 4882
2909 2688 2844 2738 2499 2669 2733
990 1185 1030 961 1133 994 1186
2854 2615 2785 – – – 2659
920 1091 953 – – – 1092
1538 1618 1547 1423 1445 1417 1644
– – – 3182 3182 3182 –
– – – 548 548 548 –
2087 2377 2159 2201 2491 2273 2350
5935 6225 6014 6073 6375 6145 6218
92 140 117 142 190 167 105
55 55 55 49 49 49 55
49 49 49 – – – 49
548 548 548 534 534 534 555
48 48 48 50 50 50 48
41 41 41 42 42 42 41
74 74 74 74 74 74 74
11 848 11 523 11 686 11 273 10 935 11 105 11 695
161 158 159 137 134 135 162
5897 5684 5789 5414 5206 5308 5792
16 039 15 364 15 694 15 081 14 434 14 749 15 773
14 309 14 309 14 309 14 349 14 349 14 349 14 309
15 580 15 820 15 701 16 127 16 367 16 247 15 697
General purpose buckets Multi-purpose bucketsFlushmountedteeth
Bare Long teeth* and segments
Long teeth* and segments BareBolt-on cutting
edgeBolt-on
cutting edge Long teeth*
Bucket weight
Rated load nominal heaped
Rated capacity nominal heaped (actual)
Rated capacity nominal heaped (advertised)
Struck capacity (actual)
Struck capacity (advertised)
Bucket width overall
Cutting edge type
Overall height
Overall operating height
Clearance at 45° dump max lift
Reach at 45° dump max lift
Clearance at 45° dump max lift
Reach at 45° dump max lift
Reach at 45° dump 2133 mm clearance
Bottom dump clearance at 45°dump max lift
Bottom dump reach at 45° dump max lift
Reach with lift arm horizontal and bucket level
Overall length – bucket level on ground
Digging depth
Full dump at max lift
Full dump at max lift
Carry height
Rackback at carry
Rackback at ground
Grading angle max
Static tipping load min
Breakout with tilt cylinders level at ground
Lift capacity to full lift bucket racked
Lift capacity at ground line bucket racked
Shipping weight without bucket
Operating weight with bucket
straight straight straight straight straight straight
* Teeth: 8 bolt-on with replaceable tips
22 953D Track Loader specifications
Standard EquipmentStandard equipment may vary. Consult your Caterpillar dealer for details.
PowertrainCat® C6.6 ACERT™ engine diesel engine, turbo charged
with ATAACModular cooling system for engine air intake, oil and waterFan, demand, hydraulically drivenTank fuelElectro Hydrostatic Control (EHC) for transmission with
travel and work modesFuel priming pump, electricWater separatorAir inlet, pre-cleanerAir cleaner dry-type, axial seal with integral pre-cleaner and
dust ejection system, electronic filter condition indicatorMuffler, under hoodStarting aid ether injectionCaterpillar extended-life coolantLoad sensing variable displacement implement pump
UndercarriageCaterpillar SystemOne™ track (38 sec.) 1850 mm
track gaugeTrack, 480 mm, double grouserFinal drive, standardTrack guiding guards, end sectionTrack adjuster, hydraulicSprocket rims, with replaceable bolt-on tough steel segmentsGuards, sprocket6 single flange track rollers per side, with one upper carrier
rollers, lifetime lubricatedConventional idlers, liftime lubricatedIdler, scraperOscillating track roller frames
HydraulicsOil changeHydraulic, GP bucket
Other Standard EquipmentTilt cab, locking barSound suppression, exteriorZ-bar loader linkageImplement cylinders with integrated positioning sensorsOperator programmable lift and tilt kickoutsEngine enclosure with lockable doorsRadiator core 6.5 fpi, debris resistantHinged Radiator Guard and swing out fanGuards, full bottomBumperEcology drains on hydraulic tankProduct link readyOil sampling valvesHoses, Caterpillar XTWarning decals
ElectricalAlternator, 24 volt, heavy duty brushless.Alarm, backupHorn, electric2 heavy duty batteries, high output, maintenance free,
950 CCASwitch, Main disconnectStarter, Electric (heavy duty, 24 volt)Four halogen lights, two forward facing, roof mounted;
two facing rearward integrated in A/C unit
Operator EnvironmentPressurized, sound suppressed, ROPS/FOPS cab with
tinted glass and sliding side windowsAir conditioning and heatingHeater/defroster with automatic temperature controlSeat, air suspended adjustable, with side-to-side isolatorElectro Hydraulic seat mounted control leversSeat belt, retractableElectronic Monitoring System with gauges for:Engine coolant temperatureHydraulic oil temperaturePump drive box oil temperatureFuel levelMirror, rearview, insideRadio ready. Includes 24 to 12 volt converter, speakers,
antenna and one 12 volt power outletsCoat hookTransmission control, V-leverControl, joystick, bucket gpStorage compartments under left armrestDocument holder on right consoleFloor mat, rubber, heavy dutyWindshield washers and wipers, front and rearCab window, front gluedDurable metal roofParking brake switch and “brake-on” indicator light
953D Track Loader specifications 23
Optional EquipmentOptional equipment may vary. Consult your Caterpillar dealer for details.
Bucket AttachmentsTeeth, Extra DutyTeeth, General DutyTeeth, PenetrationBolt On, Cutting EdgeBolt On Segments, Cutting EdgeCutting Edge SegmentTips, Extra Duty
GuardsGuard, track rollerGuard, idlerGuard, cab lightsGuard, lift linesScreen, windshield
UndercarriageTrack shoes, 380 mm, double grouserTrack shoes, 380 mm, triple grouserTrack shoes, 480 mm, center holeFinal drive, waste
Other AttachmentsCab, tilt jack, hydraulicRadio, AM/FM, CDHeater, engine coolant, 120VHeater, engine coolant, 240VRe-fueling pumpSediment pump, fuel tankCaterpillar product linkAntifreeze, –50° C
ElectricalLights, 4, extraBeacon, rotating
Operator EnvironmentControl, joystick, MP bucketControl, two levers, GP bucketComfort seat, air suspended, heatedCab window, front sealedCat Messenger
PowertrainFan, demand, reversibleTank fuel, fast fillAir inlet, pre-cleaner, turbine
HydraulicsHydraulic oil, bioOil change, high speedHydraulics MP Bucket, lines frontHydraulics RIPPER, control, lines rearHydraulics MP + RIPPER, lines front and rear
Rear AttachmentsStriker bar, rearRipper, multi-ShankHitch, standardHitch, extendedCounterweight, lightCounterweight, additional
BucketsGeneral Purpose, for bolt-on GETGeneral Purpose, flush mounted adaptMulti-PurposeMulti-Purpose, landfillGeneral Purpose, landfill, flush mounted adaptGeneral Purpose, landfill and demolition
HEHL5826 (03/2007) hr
953D Track Loader
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Materials and specifications are subject to change without notice. Featured machines in photos may include additional equipment. See your Caterpillar dealer for available options.
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