®

Cat® C9 Engine with ACERT™ TechnologyStandard

Net Power (ISO 9249) at 1850 rpm 138 kW/188 hpXL/XW/LGP

Net Power (ISO 9249) at 1850 rpm 149 kW/203 hpOperating Weight 18 400 to 23 100 kgShipping Weight 14 800 to 19 100 kg

D6TTrack-Type Tractor

2

✔

✔ ✔

Power Train

The electronically controlled powershift transmission and differentialsteering work together with the newC9 ACERT engine for maximumefficiency. pg. 8

D6T Track-Type Tractor

Operator’s Station

The comfortable operator’s stationprovides an excellent viewing areato the blade and rear of the machinefor maximum operator productivity.Controls are low effort and easy toreach. pg. 4

Integrated Electronic Solutions

Caterpillar offers technology optionssuch as Product Link and AccuGrade®

Control System that provide greateraccuracy, higher productivity, loweroperating costs and more profitability.pg. 16

Engine

ACERT Technology works at the pointof combustion to optimize engineperformance and provide low exhaustemissions. Matched with the torquedivider and power shift transmission,it provides years of dependable andefficient service. pg. 6

Serviceability

Major components have a modulardesign for excellent serviceability andfast in-field component exchange. pg. 13

Engineered for demanding work, the D6T isdesigned to be productive in a variety ofapplications. It keeps material moving with thereliability and low operating costs you expect from Caterpillar machines.

New feature✔

3

✔ ✔

SystemOne™ Undercarriage

With the elevated sprocket design,the final drives are located abovethe work area, isolating them fromground induced impacts. The differentundercarriage configurations allowthe machine to be matched to theapplication needs. pg. 12

Work Tools

Caterpillar® offers a variety of worktools to equip your D6T with theversatility needed to accomplish the jobquickly and efficiently. pg. 14

Total Customer Support

Your Cat dealer offers a wide rangeof services that can be set up under acustomer support agreement when youpurchase your equipment. The dealerwill help you choose a plan that cancover everything from machine andattachment selection to replacement –helping get the best return oninvestment. pg. 18

Structure

A heavy, strong and durable mainframe,strong case steel castings and reinforcedframe rails provide durable support tothe undercarriage, elevated final drivesand other integral frame components.pg. 10

4

Operator’s StationThe D6T operator’s station is designed for comfort and ease of operation.

Cab. An isolation-mounted,pressurized cab reduces noise andvibration for operator comfort. The cab is pre-wired for a 12-volt or 24-volt radio, equipped with twospeakers, an antenna and a radiomount recessed in the headliner.

Clear Working View. The operator has anexcellent view to the blade and rear of themachine for maximum productivity. The tapered hood, notched fuel tank andnarrow single-shank ripper carriage givethe operator a clear line of sight to thefront and rear work areas. The large single-pane windows offer excellent viewing tothe sides and blade. The low rear windowlets the operator see the ripper tip.

Cat Comfort Series Seat. The CatComfort Series seat has a thick,contoured cushion, rolled down frontedge and is adjustable eight-ways foroptimal support and comfort. Seat sidebolsters restrain side-to-side movementwhen working on steep grades or sideslopes. The seat and suspension aredesigned for 10,000-hour life.

5

Adjustable Armrests. Standard,adjustable armrests provide additionalcomfort for the operator. Adjustmentcan be performed without the use ofany tools.

In-Dash Instrument Cluster.The instrument panel, with easy-to-readgauges and warning lamps, keeps theoperator aware of all systeminformation. All gauges and readoutsare easily visible in direct sunlight.

Cat Monitoring System Display.The dash mounted instrument clusterprovides on-the-go operatinginformation and gives the operatorand service technician insight into themachine’s operation and maintenanceneeds. The Caterpillar MonitoringSystem includes:• Fuel level gauge• Hydraulic oil temperature gauge• Engine coolant temperature gauge• Power train oil temperature gauge• Engine oil pressure indicator• Digital readout• Transmission gear indicator

Heating and Air Conditioning.Conveniently located air circulationvents evenly distribute airflow withinthe cab. Controls are easily accessiblefrom the operator seat.

Power Converter. The D6T features a10-amp, 12-volt power converter for theconvenient use of radios, wirelessphones and laptop computers.

Work Tool Lock-Out Switch.Redesigned from a mechanical rotaryswitch to an electronic rocker switch,the work tool lock-out valve preventsinadvertent operation of the hydraulicwork tool attachments.

Throttle Rocker Switch. With the touchof a finger, the rocker switch activateshigh or low idle. A decelerator pedalgives the operator full control of enginespeed when the rocker switch is in thehigh idle position. Engine speed canbe set between high and low idle bysimultaneously using the deceleratorpedal and holding the Rabbit side ofthe throttle switch in for three seconds.

Steering and Transmission Control.Differential steering controls thedirection and degree of turns, forward-reverse shifting and gear selection in asingle control handle which enhancesoperator comfort. Touch shift buttonson the steering control shifts theelectronically controlled powershifttransmission. The tiller allows theoperator to work precisely in closeareas around structures, grade stakesand other machines with the finestmodulation in the industry.

Auto-Shift/Auto-Kickdown. Auto-shiftallows the operator to pre-select aforward and reverse gear for easy,efficient directional changes. Auto-shiftsettings include first forward to secondreverse, second forward to secondreverse, and second forward to firstreverse. Auto-kickdown allows thetransmission to automatically downshiftwhen significant load increases aredetected.

Dozer Control Lever. The D6T featuresergonomically designed dozer controlswith low-effort, pilot-operatedhydraulics for added operator comfort,easy operation and precise work toolcontrol. When equipped with aVPAT blade, the blade control allowssimultaneous six-way control of theblade with a thumb rocker control toadjust blade angle. The dozer controlis changed to an electro-hydrauliccontrol when the AccuGrade® ReadyOption is installed.

Ripper Control Lever. The ripper controlwith low-effort pilot-operatedhydraulics contributes to operatorcomfort, easy operation and precisework tool control.

6

EngineA combination of innovations working at the point of combustion, ACERT Technology optimizes engine performance while meeting emission regulations for off-road applications.

Cat C9 with ACERT Technology.The Cat C9 is an 8.8 L displacement,six cylinder, in-line configured enginewith hydraulically actuated electronicfuel injection or HEUI™. It usesACERT Technology, a series ofCaterpillar engineered innovations thatprovide advanced electronic control,precision fuel delivery and refined airmanagement, resulting in outstandingperformance and lower emissions. The C9 with ACERT Technologymeets European Union Stage IIIAemissions standards.

Cylinder Block. Increased block andhead material strength minimizesthe effect of high cylinder pressure.A strengthened flywheel housing jointreduces leaks. The sculpted heavy-dutydesign reduces sound and vibrationlevels. The mid-supported liner hasfewer sealing joints for a reduced riskof leaks. The integral oil cooler reducesengine width, weight and potential leakswhile improving coolant and oil flow.

Cylinder Head. A new cross-flow airdesign with four valves per cylinderand updated port geometry dramaticallyimprove airflow and enginebreathability. The cylinder head blockfeatures a robust six-bolt design for animproved seal between the head andblock at the fire ring which preventscombustion gas leaks. It also minimizesbore/liner distortion. The improvedintake port geometry provides asmoother transition and less flowrestrictions.

Fractured-Split Connecting Rods.The new fractured-split connecting rodsare designed to create near-perfect jointalignment, maximizing rod bearing life.This, in combination with a highefficiency oil filter, ensures longengine life.

ADEM A4™ Engine Controller. The air-cooled ADEM A4 controller is the brainof the engine and contains the engine’scontrol software. It regulates fueldelivery, airflow and other enginefunctions. In addition, it directs theHEUI injectors to deliver multipleinjections of fuel during the engine’scompression stroke.

Fuel Delivery. Multiple injection fueldelivery involves a high degree ofprecision. Precisely controlling thecombustion cycle lowers combustionchamber temperatures, which lowersemissions and optimizes fuel economy.This translates into more work outputper unit of fuel.

7

HEUI Fuel System. The HEUI fuelsystem is highly evolved, with a provenrecord of reliability. HEUI uses thetechnical advancement of an electroniccontrol system with the flexibilityof hydraulically controlled unit fuelinjection. The system excels in itsability to control injection pressure overthe entire engine operating speed range.These features allow the C9 to havecomplete control over injection timing,duration, and pressure.

Air-to-Air Aftercooler. The air-to-airaftercooler (ATAAC) brings cool airto the engine which increases life andlowers emissions. In addition, theATAAC, together with the tighttolerance combustion chambercomponents, maximizes fuel efficiency.

Wastegate Turbocharger. Thewastegate allows high-volume exhaustto be routed around the turbocharger tothe exhaust piping to prevent wheel spinoverspeed at high rpm but low loadconditions.

Service. The new C9 engine offerseasier maintenance and repair throughmonitoring key functions and loggingcritical indicators. Electronic diagnosticaccess is possible with a single tool,the Cat Electronic Technician.

Advanced Modular Cooling System(AMOCS). Using a two pass system,the AMOCS radiator provides moreefficient heat exchange and improvedcooling capacity over the D6T Series II.The coolant is routed from a sectionedbottom tank up the front side, over thetop of the core and down the engineside of the core to the bottom tank.This flow pattern allows the coolantto pass through the radiator twice forbetter cooling.

Serviceability. This modular coredesign permits removal of a single corewithout removing the entire radiator sorepair costs and downtime are reduced.The top tank, side channels and onesealing surface makes AMOCS morereliable and easier to service. A sitegauge allows for quick service checks.

Leak Protection. To reduce the potentialfor coolant leaks, brass tubes are weldedto a large, thick header to improve thestrength of the tube-to-header joint.In conditions where abrasive materialscan be airborne, the attachment sandblast grid should be used to preventcore damage.

Sand Blast Grid. In an applicationwhere airborne debris is prevalent,radiator core protection is a concern.To extend radiator life in harshapplications, a sand blast grid isavailable as an option to deflect thedamaging debris the engine fan propelsat the radiator.

On-Demand Fan Option. Basedprimarily on ambient air temperature,the optional demand fan can improveproductivity up to three percent andreduce fuel consumption up to fourpercent since the demand fan will onlyrun at a speed needed to meet thecooling requirements of the machine.As cooling requirements increase above24° C, the demand fan performanceconverges towards that of the standardfan so lesser benefit is achieved.

8

Power TrainThe power shift transmission and differential steering work in tandem with the new C9 engine to deliver the outstanding power and reliability expected from Caterpillar.

Two Pump Hydraulic System.• Split pump design for dedicated

hydraulic power to steering andimplements, improving blade andripper response and overall powerin steering-intensive applications

• Improved steering performanceindependent of implement operation

• Constant flow in steering circuitimproves hydraulic cooling,increasing cooling capacity ofthe machine

• Improved response in simultaneoussteering/implement applications,making the machine moremaneuverable overall

• Enhanced blade response when usingAccuGrade

Torque Divider. A single-stage torquedivider sends 70 percent of enginetorque through a converter and30 percent through a direct drive shaftfor greater driveline efficiency andhigher torque multiplication.

The D6T torque divider provides:• High reliability• Low dynamic torque• Optimum combination of operator

efficiency and driveline reliability• Components designed to absorb

full engine power

1 Single Pump Steering with Implements2 Two Pump Steering with Implements

20% Steering Improvement33% Reduction in Steering Time

1

2

9

1.5 1

2.0

2.5 2

3.0

3.5 3

Multi Velocity Program (MVP).The Multi Velocity Program (MVP) is aninnovative machine control system thatallows the operator to choose from fivedifferent speed ranges in Forward andReverse, providing the operator withthe flexibility to match machine speedto a variety of applications and groundconditions. This exclusive solution allowsthe operator to maximize production,minimize fuel consumption,and loweroverall machine operating costs.

MVP provides the operator withfive speed ranges in both Forward andReverse. The engine speed in each speedrange has been optimized to provide thebest performance, fuel economy, anddrawbar pull. The operator retains theability to operate the machine in eitherthe 3 speed or 5 speed mode.

Operating Efficiency and DrivelineReliability. The D6T torque dividerattains the best combinationof operating efficiency and drivelinereliability. It acts as a hydrodynamiccomponent between the engine andtransmission to reduce dozing shockloads to the transmission and finaldrives.

Planetary Power Shift Transmission.The D6T planetary power shifttransmission includes three speedsforward and three speeds reverse andutilizes large diameter, high capacity,oil-cooled clutches. These clutchesprovide higher torque capacity andincreased service life. The planetarypower shift transmission offers severalkey features and benefits, including:• Electronically controlled modulation

system that allows fast, smooth speedand direction changes

• Modular transmission and differentialslide into rear case for servicing ease,even when a ripper is installed

Differential Steering System.Differential steering maintains powerto both tracks while turning. The tractorturns when one track speeds up and theother slows down an equal amount.The operator can steer and control thetransmission simultaneously, which canreduce cycle times in some applications.The differential steering tiller bar hastouch shift buttons for upshifts anddownshifts. The tiller bar itself is easilyrotated forward or reverse to change therespective tractor direction. It is moved

forward to steer the tractor to the leftand pulled back to move right. Lowtiller bar efforts assure operator comfortduring long shifts. Large blade loadscan be maneuvered around buildings,bridge abutments, trees or otherobstacles. Steering modulation is alsooptimized for precise control in theseapplications. Greater load capacity,power and speed control are possible insoft underfoot conditions on steepslopes because both tracks are poweredduring turns.

Elevated Final Drive. Elevated finaldrives are isolated from ground andwork tool-induced impact loads forextended power train life. The modulardesign ensures quick and easy servicewhen required.

Load Compensating Shifting.With load compensating shifting,clutch engagement timing automaticallyadjusts according to the load factor. Thisallows improved tractor performanceand operator comfort during speedchanges and reduces the amount ofenergy dissipated through the clutches tohelp extend transmission component life.

5 Speed

3 Speed

Display

5 Speed 3 Speed

10

StructureThe D6T frame is built to absorb high impact shock loads and twisting forces.

Frame and Castings. The D6T III frameis built to absorb high impact shockloads and twisting forces. The frame hasa reinforced saddle and a welded frontcross-member that add strength to theframe to better handle lateral andtwisting forces. Steel castings augmentthe strength of the main case.

VPAT Frame. The D6T III VPAT framehas solid side rails to provide a strongerstructure. The trunnion joint is locatedin the saddle to allow the dozer sideloads to go into the mainframeinstead of through the radiator guard.The reinforced saddle accommodatesadditional loads through the frame.

Pivot Shaft. The pivot shaft is boltedto the mainframe and connects to therear roller frames to allow independentoscillation. The pivot shaft distributesimpact loads through the case.This design eliminates alignmentproblems and the need for diagonalbraces on the roller frames.

Equalizer Bar. The pinned equalizerbar gives the roller frames the abilityto oscillate up or down independentlyto better match ground contours whileproviding maximum traction andoperator comfort. The redesignedequalizer bar features bolted end pins tooffer longer life and reduce downtime.This design also allows for improvedserviceability and reliability.

11

ServiceabilitySimplified service means more productive uptime.

Caterpillar Monitoring System.The D6T III features a flexiblemonitoring system that is easilyupgraded by flashing software.As technology changes and newelectronics and software becomeavailable, this upgradable monitoringsystem allows the machine to be easilyupdated and take advantage ofimprovements.

The Caterpillar Monitoring Systemis designed to:• Allow easy upgrades• Reduce downtime• Match software to unique application

needs

Built-in Serviceability. Major D6Tcomponents are made as modules andmost can be removed without disturbingor removing others. This means lessservice time and more productivity.

Power Train Oil Filter and PressureTaps. The power train oil filter andpressure taps are remote-mounted in theright-hand fender. This provides ease ofservice and aids machine diagnostics.

Engine Oil Filter. The engine oil filter islocated on the engine for easy servicingaccess and minimal downtime and is theonly engine maintenance item on theright side of the engine compartment.An optional quick oil changeattachment can further reducemaintenance time.

Water Separator and Fuel Filter.Easily located just inside the engineaccess panel, the water separatorfunctions as the primary fuel filter,just ahead of the secondary fuel filter.A standard electric priming pump onthe primary filter reduces the effortrequired to prime the system.

Quick Disconnect Fittings.Quick disconnect fittings allow for fastdiagnosis of the power train andhydraulic oil systems.

Scheduled Oil Sampling Analysis.Scheduled oil sampling is made easierthrough live sampling ports for theengine oil, power train oil, hydraulic oiland coolant. The ports are also colorcoded for easy identification of eachsystem.

Underhood Service Light. To makenighttime service and maintenanceeasier, an adjustable service light islocated under the hood behind theradiator.

12

SystemOne UndercarriageThe elevated sprocket arrangements allow optimized balance for the best possible performance in each application.

SystemOne Undercarriage.The exclusive SystemOne Under-carriage is designed for reliability anddurability by greatly increasingundercarriage life and reducing owningand operating costs.

Roller Design. The SystemOne™roller has a taller flange to improvetrack guiding, especially in side-sloping applications. Advancedfeatures and reduced piece partsenhance the rollers which helpeliminate any flexing in the collarsand avoid oil loss. The rolleris maintenance-free and serviced asa group only. To achieve totalbalanced wear, carrier rollers withincreased wear life are also used.

STD XL XL XW XW LGP LGP VPAT VPAT VPAT

D6T mm 1880 1880 2134 2032 2286 2286 2286

Undercarriage Configuration

13

Track Gauge. Wider gauges for the D6T III ensure overall betterperformance on slopes and makethe tractor easier to turn in a varietyof applications. Additionally, thegauge changes allow for widerstraight shoes on all configurationsexcept LGP VPAT.

Primary Track Guiding. SystemOnetrack primary track guiding isgreatly improved over conventionaltrack guiding. New SystemOnesingle flange track rollers have a 40 percent increase in flangeheight which increases roller flangeside surface area to greatly improvetrack retention in the rollers. Onlythe tall, single flange rollers areoffered with SystemOneundercarriage.

Secondary Track Guiding.SystemOne secondary trackguiding is improved. The straighttrack link design eliminates theconventional link pin boss. Thefixed track frame guiding surfacesguide directly on the hardened linkside rail. The fixed guide wearsurfaces are specifically profiled tomatch the SystemOne track linkside rail geometry.

Master Link. A unique feature of theSystemOne Undercarriage is that, unliketraditional undercarriage, a master stylelink is not required. This improves trackreliability and durability. The unique straightlink design allows the track to be taken apartat any joint by using the proper Caterpillartooling to press the link on or off.

A clamp-style master link is available but not recommended for high impactconditions or machines using wide shoes in these types of applications.

Shoe Selection. Shoe selection is still keyto maintaining the proper flotation whileusing the narrowest shoe possible. Thereare several sizes in both moderate andextreme service available.

Sealed Cartridge-Style Joints. The all-newcartridge design is factory assembled andsealed for life. A new revolutionary sealingsystem, synthetic oil, a factory set faceload and a newly developed retentionsystem that eliminates endplay are all newfeatures.

Center Tread Idler. The SystemOneUndercarriage uses center tread idlerswhich coupled with new, taller flangerollers, improve guiding and eliminatelink scalloping. The center tread idlerwill increase system life 50 percent ormore in most applications since theywill last as long as two link assemblies.In combination with the rotatingbushing design, the center tread idlersand sprocket segments can be reusedthrough at least two undercarriage lives.

14

Work ToolsCat D6T work tools are designed to provide flexibility to match the machine to the job.

Cat Blades. All blades feature a strongbox-section design that resists twistingand cracking. Blades are made ofCat DH-2™ steel that has high tensilestrength and stands up to the mostsevere applications. Heavy moldboardconstruction and hardened bolt-oncutting edges and end bits add strengthand durability.

Semi-Universal. The Semi-Universalblade is built for tough applicationswhere penetration and capacity isimportant. The blade wings aredesigned for superior load retention andpenetration in tightly packed materials.

Straight Blade. The S-blade providesgood versatility. Since it has less bladecapacity, it can handle heavier materialsthan a larger blade.

Angle Blade. The angle blade is securedby outside-mounted pusharms using apinned connection that allows bladeangling and tilting, left or right.Blade angle is changed manually andblade tilt is changed hydraulically.

Variable Pitch Angle Tilt (VPAT) Blade.The Variable Pitch Angle Tilt (VPAT)blade allows the operator tohydraulically adjust the blade lift, angleand tilt simultaneously using theergonomically designed blade control.The operator can also manually adjustblade pitch. The versatility of the VPATblade gives the D6T III the ability totake on a variety of applications such asfinish grading, spreading material, sidecasting, V-ditching and backfilling.The VPAT blade is available on theXL, XW and LGP configurations andrequires either a counterweight or arear work tool attachment for optimalmachine balance.

The new D6T III VPAT blade offersseveral improvements over theSeries II design:• Manually adjustable blade pitch• Better cutting edge visibility from

operator station• Improved tilt and angle cylinder lines

routing and guarding• Improved structural durability• No wear plates required on the

radiator guard or main frame

Site Preparation Arrangements.The Ripper Package and DrawbarPackage are configured to optimize theperformance of the D6T in light tomedium duty dozing applicationscommon to site preparation jobs.

Answering a need for a maneuverabletractor with the ability to cut and finishgrades, the D6T III gives operatorsthe stability needed when workingon slopes. When coupled with theVPAT blade, the D6T III allows formore efficient rough and finish gradein applications such as golf coursedevelopment and house padconstruction.

15

Rear Counterweight. Rearcounterweights may be needed tooptimize balance for backing up steepslopes or increasing performance inheavy dozing applications. Rearcounterweights are recommended ifanother rear attachment is not specified.

Drawbar. The D6T III can be equippedwith a drawbar for retrieving otherequipment or pulling work tools such as:• Disks• Compactors• Chopper wheels

Optional implement towing arrange-ments allow for quick setup and use of a hydraulically controlled towed scraper.

L-Shaped Push Arms. L-shaped pusharms bring the blade closer to themachine than diagonal brace designs,providing excellent maneuverability,machine balance and blade penetration.The L-shaped design provides solidlateral stability throughout the lifeof the machine and better cylinderpositions for constant pryoutindependent of blade height.

Cutting Edges and End Bits. High-tensile strength Cat DH-2™ steelcutting edges resist torsional bendingand distortion in tough applications.End bits are DH-3™ to providemaximum service life in toughmaterials.

Load Sensing Hydraulics. Field-proven,load-sensing, pilot controlled hydraulicsrespond to operating requirements byautomatically and continually adjustinghydraulic power to maximize worktool efficiency.

Winch. A single lever control actuatesboth clutch and brake functions toimprove operator efficiency.• Input clutches on PTO shaft reduces

engine horsepower losses to maintainfuel efficiency

• Clutch engagement and brake releaseare automatically synchronized forsmoother operation

• Winch components can be servicedwith winch mounted on the tractor

Multi-Shank Ripper. The multi-shankparallelogram ripper offers the choiceof one, two or three shanks dependingon job conditions. Curved or straightripper shanks are available.

16

Integrated Electronic SolutionsCaterpillar technology offers customers new opportunities for efficiency and profitability.

AccuGrade® System for Track-TypeTractors. Caterpillar is helpingcustomers revolutionize the way theymove material with new technologysolutions for earthmoving machines –solutions that provide greater accuracy,higher productivity, lower operatingcosts and more profitability.

The AccuGrade System is designed andintegrated into the machine andhydraulic systems to create anautomated blade control system thatallows operators to grade with increasedaccuracy.

The system uses machine-mountedsensors to calculate precise blade slopeand elevation information.

The integrated electrohydraulic valvecontrol module uses the informationreceived from the sensors toautomatically adjust the bladeto maintain grade.

Automated blade control allowsoperators to improve efficiency andproductivity by achieving grade fasterand in fewer passes than ever before,reducing the need for traditional surveystakes or grade checkers.

AccuGrade Ready Option. The factoryready option machine makes systeminstallation and setup quick and easy,and optimizes performance andreliability.• Hydraulic control systems are

integrated into the machinehydraulics for maximum performanceand dependability.

• AccuGrade controls are integratedinto the machine controls andlevers for reliable operation andprecise control.

• Wiring harnesses and cablesare routed during assembly forimproved wear protection andbetter reliability.

• System is designed to withstandvibration for long life in ruggedworking environments.

• Safety interlock feature is builtin for added protection duringautomated operation.

AccuGrade Laser. AccuGrade Laserdesigned for precise grade control usinga laser transmitter and receiver.

A laser transmitter is set up on thework site and creates a constant gradereference over the work area. A digitallaser receiver is mounted on themachine and captures the laser signal asthe machine moves across the work site.

The system captures information andcalculates the blade adjustmentsnecessary to achieve grade. The systemmakes automatic elevation adjustmentstypically performed by the operatorand provides automatic blade control.The operator simply steers the machine.The system also calculates cut/fillrequirements for manual blade control.

17

AccuGrade GPS. AccuGrade GPScomputes the positioning informationon the machine, compares the positionof the blade relative to the design planand delivers that information to theoperator via an in-cab display.

Information, such as blade elevation,necessary cut/fill to achieve grade,visual indication of the blade’s positionon the design surface and a graphicalview of the design plan with machinelocation.

AccuGrade GPS puts all theinformation the operator needs tocomplete the job in the cab, resulting ina greater level of control. Vertical andhorizontal guidance tools visually guidethe operator to the desired grade.

Automated features allow the hydraulicsystem to automatically control bladeadjustments to move the blade to grade.The operator simply uses the light barsto guide the machine for consistent,accurate grades and slopes, resulting inhigher productivity with less fatigue.

Increases Productivity and Efficiency. • Increases productivity by up to 50%• Reduces guesswork and costly

rework by moving dirt right the firsttime

• Reduces survey costs up to 90%• Improves material utilization• Reduces operating costs• Extends the work day

Enhances Worksite Safety. • Reduces the need for ground

personnel (survey stakers andcheckers) on the worksite, in thevicinity of working equipment.

Assists with Labor Shortage. • Reduces labor requirements and costs• Customers can get the job done more

quickly and efficiently• Reduces need for staking and grade

checkers• Empowers operator, and improves

operator confidence by deliveringgrading information to the cab

Improves Employee Satisfactionand Retention. • In-cab display brings elevation

control to the cab• Empowers operator with real-time

results• Real-time feedback on progress

increases job satisfaction, eliminatesguesswork and reduces operator stress

• Improves operator skills and takesperformance to the next level

• Investing in the latest technologyleads to a sense of value and trustby the operator

Cat Machine Security System (MSS).This Caterpillar designed system guardsagainst theft by disabling the startingsystem when a potential thief isattempting to steal it using the standardCaterpillar key. Only an MSS key withyour unique code will allow themachine to start. And, because MSS isintegrated into the electronics, thievescannot bypass it to start yourequipment.

Benefits. • Protects from theft• Control who can start your equipment• Control which days and hours

equipment may be started• Easily installed on Cat and other

brands of equipment• Caterpillar designed and machine

integrated• Potential insurance savings due to

increased machine security

Cat® Product Link. When machines areoperating at several different job sites,it becomes more difficult to keepcurrent and accurate records. That canlead to missed maintenance, poor use ofassets and wasted time. Product Linkprovides two-way information flowbetween machine on-board systems andyour desktop computer through DealerStore Front and Equipment Manager.Cat Product Link enables the use ofEquipment Manager to keep you intouch with your machines.

Benefits. • Provides machine location• Provides machine health information• Eliminates trips for service meter

hour readings• Monitors fuel level and consumption• Identifies unauthorized machine use• Facilitates efficient maintenance

scheduling• Can be retrofitted on Cat and other

brands of machines

18

Total Customer SupportCaterpillar dealer support is unmatched in the industry!

Machine Selection. Make detailedcomparisons of the machines you areconsidering before you buy. How longdo components last? What is the costof preventive maintenance? What is thetrue cost of lost production? Your Catdealer can give you answers to thesevery important questions.

Purchase. Consider the financingoptions available, as well as the day-to-day operating costs. This is also thetime to look at dealer services that canbe included in the cost of the machineto yield lower equipment owning andoperating costs over the long run.

Serviceability. Quick and easyserviceability means less downtimeand more productivity. Sight gauges,filter locations, convenient access tooil and coolant sampling ports and anengine compartment-mounted worklamp make daily and periodic servicefaster and easier.

Product Support. Nearly all D6T partscan be found at Cat dealer partscounters. Cat dealers utilize aworldwide computer network to find in-stock parts to minimize machinedowntime. An exchange program formajor components may be available.This will shorten repair time and lowercosts.

Remanufactured Components. GenuineCat remanufactured parts helps savemoney with the same warranty andreliability as new products at costsavings of 40 to 70 percent.Components are available for the drivetrain, engine and hydraulics.

Parts Pricing. The price of parts canimpact the overall owning and operatingcost of any piece of equipment and areoften overlooked when a purchase isbeing considered. At several points inthe machine’s life cycle, maintenanceor repair parts will be required.Parts pricing is all about maximizingthe bottom line of the end-user and as aresult, Cat parts are priced, on average,35 percent lower than those of othertractors in this size class.

Resale Value. History has proven, andcontinues to show, that Cat machinesbring a much higher price than otherbrands when resold. This translatesinto all Cat equipment owners gettinga greater return on their investment thanwith other brands.

19

Winch

Winch PA 56

Weight 1179 kg

Bracket Length 1210 mm

Case Length 1210 mm

Case Width 975 mm

Increased Tractor Length

STD 517 mm

XL/XW 517 mm

LGP 397 mm

Flange Diameter 504 mm

Drum

Width 330 mm

Diameter 254 mm

Capacity – 22 mm 88 000 mm

Capacity – 25 mm 67 000 mm

Capacity – 29 mm 67 000 mm

Ferrule Size (O.D. x Length) 54 x 67 mm

Oil Capacity 67 Liters

Transmission

5 Speed 3 Speed

Forward km/h

1.5 1 3.8

2.0 5.2

2.5 2 6.6

3.0 8.5

3.5 3 11.4

Reverse

1.5 1 4.8

2.0 6.6

2.5 2 8.4

3.0 10.9

3.5 3 14.6

ROPS/FOPS

� ROPS (Rollover Protective Structure)meets ROPS criteria ISO 3471-1994.

� FOPS (Falling Object ProtectiveStructure) meets ISO 3449-1992Level II.

EngineCat C9 Engine with ACERT Technology

StandardGross Power (J1995) 159 kW/216 hp

Net Power at 1850 rpm

ISO 9249 138 kW/188 hp

80/1269/EEC 138 kW/188 hp

Bore 112 mm

Stroke 149 mm

Displacement 8.8 Liters

XL/XW/LGPGross Power (J1995) 170 kW/231 hp

Net Power at 1850 rpm

ISO 9249 149 kW/203 hp

80/1269/EEC 149 kW/203 hp

Bore 112 mm

Stroke 149 mm

Displacement 8.8 Liters

� All engine horsepower (hp) are metricincluding front page.

� Net power advertised is the poweravailable at the flywheel when theengine is equipped with fan, aircleaner, muffler and alternator.

� No derating required up to 2300 maltitude, beyond 2300 m automaticderating occurs.

� Maximum altitude of 3000 m

Service Refill Capacities

Liters

Fuel Tank 424

Cooling System 76.8

Engine Crankcase 28.0

Power Train 145.7

Final Drives (each) 13.6

Roller Frames (each) 24.6

Hydraulic Tank 51.5

Pivot Shaft Compartment 1.9

0 2 4 6 8 10 km/h

N x1000200

0

50

100

150

1.5 2.52.0 3.0 3.5

Drawbar Pull vs Ground Speed

Dra

wba

r Pul

l

Speed

Brakes

ISO 10265 MARCH99

Hydraulic Controls

PumpCapacity 69 bar

Rated Engine Speed

Implement 1965 rpm

Steering 2625 rpm

Pump Output

Implement 189 L/min

Steering 179 L/min

Cylinder Flow

Lift 189 L/min

Tilt 80 L/min

Ripper 189 L/min

Angle VPAT 170 L/min

Main Relief Valve SettingsPressure Setting

Implement 217 bar

Implement VPAT 244 bar

Steering 417 bar

Maximum Operating PressureBulldozer

Lift 193 bar

Tilt 193 bar

Ripper 193 bar

Maximum Operating Pressure VPATBulldozer

Lift 216 bar

Tilt 216 bar

Angle 216 bar

Ripper 193 bar

20 D6T Track-Type Tractor specifications

Ripper

Bulldozer Specifications

Blade Capacity m3

Blade Width mm

Blade Height mm

Digging Depth mm

Ground Clearance mm

Maximum Tilt mm

Weight* kg

Weight** kg

S S SU SU SU A*** A*** A*** VPAT VPAT VPATSTD LGP STD XL XW STD LGP XL XL XW LGP3.89 3.75 5.61 5.61 5.62 3.93 5.22 3.93 4.73 5.10 4.32

3360 4063 3260 3260 3556 4166 5070 4165 3880 4160 4160

1257 1101 1412 1412 1412 1155 1134 1155 1295 1295 1191

473 655 473 459 459 506 828 524 737 737 672

1104 1083 1104 1195 1195 1142 1088 1205 1174 1174 1230

765 701 743 743 743 408 476 408 440 460 502

2599 2836 2699 2973 2949 3050 3430 3150 3560 3650 3620

– – – – – – – – 1593 1681 1591

* Includes push arms, blade, blade tilt cylinder(s), cutting edges and miscellaneous hardware components** VPTA blade only

*** Angle dozers include two tilt cylinders

Weights

Type Fixed Parallelogram

Number of pockets 3

Overall beam width 2202 mm

Beam cross section 216 x 254 mm

Maximum clearance raised (under tip, pinned in bottom hole) 511 mm

Maximum penetration 500 mm

Maximum penetration force 66 kN

Pryout force 91 kN

Weight with one shank 1634 kg

each additional shank 74 kg

STD A 18 737 14 776

STD SU 18 393 14 776

XL A 20 319 16 771

XL SU 20 148 16 771

XL VPAT 21 178 17 246

XW SU 20 739 17 432

XW VPAT 21 444 17 784

LGP S 21 783 18 915

LGP VPAT 23 119 19 113

Shipping Weightkg

Operating Weightkg

Shipping Weightkg

Operating Weightkg

� Operating weight includes lubricants, coolant, full fuel tank, standard track, cab, hydraulic controls, drawbar and operator.� Shipping weight includes lubricants, coolant, cab, hydraulic controls, standard track and 10 percent fuel.

Sound

� The operator sound level measured according to theprocedures specified in ISO 6396:1992 is 80 dB(A), for caboffered by Caterpillar, when properly installed andmaintained and tested with the doors and windows closed.

� The labeled sound power level is 111 dB(A) measuredaccording to the test procedures and conditions specified in2000/14/EC.

21D6T Track-Type Tractor specifications

STD XL XL XW XW LGP LGPVPAT VPAT S VPAT

mm 1880 1880 2134 2032 2286 2286 2286

mm 2640 2640 – 2950 – 3428 –

mm 2440 2440 2692 2794 2997 3193 3150

mm 3143 3143 3143 3143 3143 3193 3193

mm 3195 3195 3195 3195 3195 3245 3245

mm 2664 2871 2871 2871 2871 3275 3275

mm 3860 3860 3860 3860 3860 4247 4247

mm 217 217 217 217 217 251 251

mm 1403 1403 1403 1403 1403 – –

mm 517 517 517 517 517 397 397

mm 1043 – – – – 1218 –

mm 1235 1472 – 1472 – – –

mm 1147 – – – – –

mm – – 1412 – 1524 – 1718

mm 65 65 65 65 65 65 65

mm 383 383 383 383 383 433 433

mm 203 203 203 203 203 203 203

39 41 41 41 41 45 45

6 7 7 7 7 8 8

mm 560 560 560 760 710 915 785

m2 2.98 3.22 3.22 4.36 4.08 5.99 5.16

bar 0.61 0.62 0.66 0.47 0.52 0.36 0.45

mm 576 576 576 576 576 626 626

mm 511 511 511 511 511 561 561

1 Track gauge

2 Width of tractor

Over trunnions

Without trunnions (standard track)

3 Machine height from tip of grouser:

Stack

ROPS

4 Length of track on ground

5 Length of basic tractor

With following attachments add:

Drawbar

Ripper Multi-Shank (tip at ground line)

Winch

S Blade

SU Blade

A Blade

VPAT Blade

6 Height of grouser

7 Ground clearance

Track pitch

Number of shoes per side

Number of rollers per side

Standard shoe

Ground contact area (standard track)

Ground pressure*

8 Drawbar height

From ground face of shoe

* STD, XL, XW with SU blade, with no rear attachments unless otherwise specified.

Dimensions (approximate)

22 D6T Track-Type Tractor specifications

Standard EquipmentStandard and optional equipment may vary. Consult your Caterpillar dealer for specifics.

ElectricalAlarm, backupAlternator, 95-ampBatteries, two maintenance-free 12V

(24V system)Converter, 12V, 10 amp with two power

outletsDiagnostic connectorHorn, forward warning

Operator EnvironmentAir conditioner, under-hoodArmrests, adjustableCab, ROPS/FOPS, sound-suppressedDifferential steering control with touch

shiftElectronic distance travel indicatorCaterpillar Monitoring System:

Temperature (coolant, hydraulic, power train), fuel level, tachometer, odometer, gearindicator, and diagnostics

Foot pads, dashHeaterHourmeter, electronicMirror, rearviewMulti Velocity Program, five speedPedal, deceleratorPilot operated hydraulic controls with

electronic deactivation switchRadio readyPlanetary Transmission, with torque

dividerSeat, adjustable, contour suspension

with gray fabricSeat belt, retractable 76 mmThrottle switch, electronicWipers, intermittent

Power TrainAdvanced Modular Cooling System

(AMOCS)Aftercooler, air-to-air (ATAAC)Air cleaner, pre-cleaner with strata tube

dust ejectorAir filter with electronic service

indicatorC9 ACERT, diesel, Electronic Unit

Injection (HEUI)Coolant, extended lifeElectronically controlled powershift

transmission, 3 forward, 3 reverse speeds

Fan, blower, direct driveFinal drives, 3-planet single reduction

planetaryFuel priming pump, electricMuffler with mitered stackParking brake, electronicPrescreenerShift management:

Controlled throttle, load compensatingAutomatic directional and downshift

Starting aid, automatic etherTorque dividerTurbocharger, waste-gateWater separator

UndercarriageCarrier roller (XL, XW, and LGP)Equalizer bar, heavy-dutyGuards, center track guiding (LGP)Guards, end guidingIdlers – SystemOne, center tread,

lifetime lubricatedSprocket rim segments, replaceableTrack adjusters, hydraulicTrack roller frames, tubularTrack rollers, lifetime lubricatedTrack, SystemOne, moderate service:Standard arrangement – 560 mm,

39-sectionXL arrangement

560 mm, 41 section, (VPAT models)560 mm, 41 section (non-VPAT

models)XW arrangement

710 mm, 41 section (VPAT models)760 mm, 41 section (non-VPAT

models)LGP arrangement

790 mm offset, 45-section (VPATmodels)

915 mm, 45-section (non-VPATmodels)

Other Standard EquipmentCD-ROM parts bookCooler, hydraulic oilEngine enclosures, perforatedFront pull deviceGuards, hinged bottomHood, perforatedHydraulic, load sensing,

dozer lift and tiltProduct LinkRadiator doors, hinged, fan blast

deflectorScheduled oil sampling ports:

Engine oil, power train oil, hydraulic oil, and engine coolant

Tool boxVandalism protection:

Cap locks for fluid compartments and battery box

23D6T Track-Type Tractor specifications

ElectricalAccuGrade Ready Option (Laser/GPS)Alternator, 150 amp (brushless)Alternator, 95 amp (ducted)Lights, supplemental:

11 construction (not for VPAT models)11 waste disposal/VPAT package7 (for use with VPAT model)7 (not for VPAT models)Sweeps

Machine Security SystemPower converter

Operator EnvironmentAir conditioner (ROPS mounted)Air suspension seat, cloth

(for use with cab)Canopy arrangement (OROPS)Steps, heavy duty grab handles

Power TrainDrains, ecology (torque converter and

transmission)Fan: Demand (clutch drive), ejector,

Flexxaire, or reversibleGrid, radiator core protectorOil change system, high speed engine

and power trainPrecleaner: turbine with or without

screen, or with prescreenerRadiator AMOCS, waste handling,

6 FIN/IN cores; abrasion resistant cores

Starting AidsBatteries, heavy dutyHeater, engine coolant

Thermal shield

UndercarriageSystemOne, Extreme Service (ES),

Moderate Service (MS)Track, Pairs (STD/XL)

560 mm, ES; 610 mm MS or ESTrack, Pairs (XW)

762 mm ES or TrapTrack, Pair (LGP, non-VPAT)

914 mm ES or TrapHeavy-duty, Extreme Service (ES),

Moderate Service (MS)Track, Pairs (STD/XL)

560 mm MS or ES; 610 mm MS or ESTrack, Pairs (XW)

762 mm, MS or ESTrack, Pairs (LGP, non-VPAT)

914 mm MS

GuardsFront pull hook, extreme service, sealedCrankcase – extreme service sound

suppressed, sealedFinal drive clamshellFinal drive sealsFuel tank with or without mechanical

winch or ripperPrecleanerRadiator, bottom heavy-dutyRadiator, heavy-duty, punched (non-

VPAT)Radiator, hinged, two-piece, heavy-duty

(non-VPAT)Radiator, hinged, 2-piece heavy-duty

(VPAT)Rear heavy-duty, transmissionScreen, rear – with ROPS mounted air

conditionerSeals, idler GPStriker bar GP, front and rearSweeps (not compatible with VPAT

machines)SystemOne

Guard, track guiding, center (STD, XL, XW)

Guard, track roller (STD, XL, XW, LGP)

HydraulicsRipperWinchAccuGrade

RippersRipper, multi-shankRipper Attachments

Tooth, D6 multi-shank ripperCurved or straight (up to 3)

Winch Arrangements (PACCAR)Fairlead, 3 rollersFairlead roller (4th roller)Installation arrangement, winchWinch arranngement – slow speed

with freespool (slow speed) or(normal speed)

Other AttachmentsAccuGrade blade kitCounterweight, rearCounterweight, additional rear slabDrawbar, rigid, long or shortSound suppression

Optional EquipmentStandard and optional equipment may vary. Consult your Caterpillar dealer for specifics.

®

D6T Track-Type Tractor

HEHQ5761 (10/2007) hr

For more complete information on Cat products, dealer services, and industry solutions, visit us on the web at www.cat.com

Materials and specifications are subject to change without notice. Featured machines in photos may include additional equipment. See your Caterpillar dealer for available options.

© 2007 Caterpillar -- All rights reserved

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.