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Large Dozers(Non Current)

From large to small, mining to finishing work, you are certain to find a Cat® Dozer to match your needs. We offer several configurations and special custom packages to meet your specific needs.

D8R Track-Type Tractor

The D8R's elevated sprocket increases productivity, simplifies maintenance, reduces downtime with modular components, and raises final drives and associated power train components out of the work environment.

  • Specification Summary

  • Engine ModelCat 3406C TA
  • Flywheel Power228 kW
  • Operating Weight37771 kg
  • Shipping Weight27416 kg
  • Gross Power245 kW

Product Details


Engine Model Cat 3406C TA
Flywheel Power 228 kW
Gross Power 245 kW
Net Power - Caterpillar 228 kW
Net Power - ISO 9249 228 kW
Net Power - SAE J1349 226 kW
Net Power - EU 80/1269 228 kW
Net Power - ISO 1585 228 kW
Bore 137 mm
Stroke 165 mm
Displacement 14.6 L
Net Power - DIN 70020 317 PS


Operating Weight 37771 kg
Shipping Weight 27416 kg


Shoes/Side 44
Pitch 216 mm
Ground Clearance 528 mm
Track Gauge 2082 mm
Length of Track on Ground 3206 mm
Ground Contact Area 358 m2


1 Forward 3.5 km/h
2 Forward 6.2 km/h
3 Forward 10.8 km/h
1 Reverse 4.7 km/h
2 Reverse 8.1 km/h
3 Reverse 13.9 km/h

Service Refill Capacities

Fuel Tank 625 L
Cooling System 92 L
Engine Crankcase* 32.5 L
Power Train 144 L
Final Drives (each) 14 L
Roller Frames (each) 65 L
Pivot Shaft Compartment 40 L
Implement Hydraulic System Tank Only 72 L

Hydraulic Controls

Bulldozer Relief Valve Setting 24100 kPa
Tilt Cylinder Relief Valve Setting 24100 kPa
Ripper (Lift) Relief Valve Setting 24100 kPa
Ripper (Pitch) Relief Valve Setting 24100 kPa
Tank Capacity 72 L


Weight* 1878 kg
Oil Capacity 81 L
Increased Tractor Length 163 mm
Winch Case Width 1220 mm
Drum Width 310 mm
Flange Diameter 550 mm
Drum Capacity- 24 mm (1 in) 25 m
Drum Capacity- 29 mm (1.13 in) 29 m
Drum Capacity- 32 mm (1.25 in) 73 m


Ground Clearance 528 mm
Track Gauge 2082 m
Width without Trunnions (Standard Shoe) 2642 mm
Overall Length Basic Tractor 4554 mm

Power Train

The 3406C engine, torque divider and field proven, power shift transmission provide an excellent balance between efficiency and power.


Caterpillar 3406C engine performs at full-rated net power with a torque rise of 55%.

Meets Regulations

The 3406C engine meets worldwide emissions regulations for the Environmental Protection Agency, the European Union and the California Air Resources Board.

Turbocharging and Aftercooling

Turbocharging and aftercooling provide high horsepower while keeping RPM and exhaust temperatures low.

Steel Spacer

A steel spacer between the block and head eliminates the need for block counterbores, extending block life.

Longer Component Life

Components live longer because oil-cooled pistons and full-length water-cooled cylinder liners provide maximum heat transfer for longer component life.


Stellite-faced valves, through-hardened crankshaft journals and steel-backed, copper-bonded aluminum bearings help assure reliable performance in the toughest duty.

Dealer's Exchange Program

Cat dealer's exchange program for major engine components can cut repair time and costs.

Torque Divider

A single-stage torque converter with output torque divider send 70% of engine torque through the converter, 30% through a direct drive shaft for greater driveline efficiency and higher torque multiplication.

Torque Converter

The torque converter shields the driveline from sudden torque shocks and vibration.

Final Drives

Elevated final drives are isolated from ground and implement induced impact loads for extended power train life.


Planetary power shift transmission has 3-speeds forward and 3-speeds reverse and utilizes large diameter, high-capacity, oil-cooled clutches.

Cooling System

Superior cooling and ease of service keep the D8R on the job and producing day after day.

Cooling Capacity

Advanced Modular Cooling System (AMOCS) utilizes an exclusive two pass cooling system and increased cooling surface area to provide significantly more cooling capacity than conventional systems.

Extended Life Coolant

Caterpillar Extended Life Coolant (ELC) is now standard in all D8R tractors.

Two Pass Cooling System

Two pass cooling system circulates coolant from the sectioned bottom tank up through one side of the cooling element and down through the other side returning it to the bottom tank.

Cooling Elements

The cooling elements are individual core modules that are connected to a sectioned bottom tank.


The servicing of the AMOCS can be performed without tilting the radiator guard.

Differential Steering

Uses hydraulics instead of friction to steer.

Uninterrupted Power

Differential steering delivers uninterrupted power to both tracks to help maintain blade loads, reduce cycle times and provide enhanced side slope capability.


The operator can steer and change directions easily with one hand.


A planetary differential turns the machine by speeding up one track and slowing the other while maintaining full power to both.

Tiller Control

Tiller control allows the operator to work more precisely in close areas, around structures, obstacles, grade stakes, other machines or on fine grades.

Efficient in Soft Underfooting

Especially efficient in soft underfooting, where both tracks can power through turns to keep loads moving and maintain traction.

Hydraulic System

An efficient hydraulic system devotes one pump solely to steering with a separate pump to power implements.


Durable design and construction stand up to the most demanding applications.


Mainframe strength. The D8R mainframe is built to absorb high impact shock loads and twisting forces.

Frame Rails

Frame rails are full box section, designed to keep components rigidly aligned.

Steel Castings

Heavy steel castings give added strength to the main case, equalizer bar saddle, front cross member and tag-link trunnion.


The top and bottom rails are continuous rolled sections, with no machining or welding to provide superior mainframe durability.

Final Drives

The main case elevates the final drives well above the ground level work area to protect them from impact loads, abrasion and contaminants.

Track Roller Frame Alignment

A pivot shaft and pinned equalizer bar maintain track roller frame alignment.

Tag-link Construction

Tag-link construction brings the blade closer to the machine for more precise dozing and load control.

Tag-link Design

Tag-link design provides solid lateral stability and better cylinder positions for constant pryout independent of blade height.


Caterpillar elevated sprocket tractors provide excellent traction, durability and ride with outstanding component life.


Suspended undercarriage design absorbs impact loads to reduce the shock loads transferred to the undercarriage.


Bogie suspension conforms more closely to the ground to provide more ground contact, especially in hard, uneven terrain.

Roller Frames

Roller frames are tubular, to resist bending and twisting, with added reinforcement where operating loads are the highest.

Non-suspended Undercarriage

Non-suspended undercarriage, without bogies, is available for applications involving moderate-impact, or highly abrasive materials.


Sealed and lubricated track. Permanently coats the track pin with a sealed-in lubricant, minimizing metal-to-metal contact.

Operator Station

Designed for comfort and ease of operation.


Clear full-circle view.


Comfortable, non-tiring operation.


Low effort controls are easily accessible and provide sure, precise maneuvering with less operator fatigue.


The Caterpillar Contour Series Seat is fully adjustable and designed for comfort and support.

Control Lever Restraints

Implement control lever restraints, when engages, prevent inadvertent movement of control lever.

Tiller Control

Dual twist tiller controls the direction and degree of turns, forward-reverse shifting and gear selection with one control.

Electronic Monitoring System (EMS) and Gauge Group

The Gauge Group includes engine coolant temperature, power train oil temperature, hydraulic oil temperature and fuel level.

Work Tools

The D8R can be tailored to fit a variety of applications with many attachment options.


The 8SU blade and the 8U blade make full use of the D8R's power.


Single and multi-shank rippers are made to penetrate tough material fast and rip thoroughly.

Custom Products

In addition to the standard range of optional equipment, there are special attachments and machine configurations to suite particular customer needs.

Load Sensing Hydraulics

Adjusts implement and hydraulic power to increase both operator and machine efficiency.

Monitor Hydraulic Power

Load-sensing hydraulics utilize a feedback loop from the implement valve to the implement pump to continually monitor the hydraulic power requirements of the implement.

Pump Output

During normal blade or ripper corrections, pump output increases and decreases to provide precise power for dozing or ripping.

Increased Machine Production

Lower pump requirements reduce engine power requirements for the hydraulics, making more drawbar power available for increased machine production.


Ease of service and maintenance gives you more time on the job.


Built-in servicing ease. Less service time means more working time.

Ecology Drains

Ecology drains provide an environmentally safer method to drain fluids.


Spin-on fuel and engine oil filters save changing time.


AMOCS individual cooling elements allow radiator servicing without major component removal, saving considerable time and cost.

Diagnostic Connector

A diagnostic connector allows the Cat Dealer's electronic test instrument to quickly troubleshoot the electrical system.

Disconnect Fittings

Quick disconnect fittings allow for fast diagnosis of the power train and implement oil systems.

Customer Service

Caterpillar's dealer commitment is unrivaled in the industry.


Dealers committed to fast, quality customer support.


Dealer service response extends to programs such as Custom Track Service (CTS), Scheduled Oil Sampling (SOS), and guaranteed maintenance contracts that get peak life and performance from your machine.


Your dealer is also expert at arranging affordable lease, rental or purchase financing for all Caterpillar products.
  • Advanced Modular Cooling System (AMOCS)
    • Adjustable Contour Series Suspension Seat
      • Air Cleaner
        • Air cleaner service indicator
          • Alternator, 50-amp
            • Back up alarm
              • Back up alarm
                • Batteries (4), 12-volt, 3000CCA
                  • Blower fan
                    • Decelerator and hand throttle lever
                      • 24-volt direct electric starting
                        • Ecology drain on engine oil, engine coolant, torque converter, transmission, power train oil, and hydraulic system
                          • Electric hour meter
                            • Electric Monitoring System (EMS)
                              • Ether starting aid
                                • Front pull device
                                  • Fuel priming pump
                                    • Hinged extreme service crankcase guard
                                      • Hinged radiator and blast deflector guards
                                        • Horn
                                          • Hydraulic control, three valve
                                            • Hydraulic track adjusters
                                              • Implement control lever boots
                                                • Lifetime Lubricated rollers and idlers
                                                  • Lighting system, Halogen (two lights forward in fender, two rear on fuel tank)
                                                    • Load sensing hydraulics
                                                      • Muffler
                                                        • Pinned equalizer bar
                                                          • Powershift transmission
                                                            • Pre-cleaner with dust ejector
                                                              • Prescreener
                                                                • Rain cap
                                                                  • Rearview mirror
                                                                    • Replaceable sprocket rim segments
                                                                      • ROPS/FOPS canopy (USA)
                                                                        • Sealed and Lubricated Track
                                                                          • Seat belt (retractable)
                                                                            • Starting receptacle
                                                                              • Suspension-type undercarriage with eight roller track frames
                                                                                • Track guiding guards
                                                                                  • Two-piece master links
                                                                                    • Two-piece master links
                                                                                      • 560 mm (22") moderate service tracks
                                                                                        • Vandalism protection includes cap locks for fuel tank, engine oil filler, radiator filler and dip stick, plus battery box locks (two) and left hand service area cover lock
                                                                                          • Air conditioner (R134a)
                                                                                            • Air conditioner, fender mounted
                                                                                              • Air conditioner, ROPS mounted
                                                                                                • Angle dozer tilt cylinders
                                                                                                  • Bulldozers:
                                                                                                    •  Rock guard and wear plate (8SU blade only)
                                                                                                    •  Rock guard (8U blade only)
                                                                                                    •  Pushplate (8SU blade only)
                                                                                                  • Rock guard and wear plate (8SU blade only)
                                                                                                    • Rock guard (8U blade only)
                                                                                                      • Pushplate (8SU blade only)
                                                                                                        • Cab, FOPS sound suppressed, with ROPS rollbar (includes heater, cab accessory group and mirror)
                                                                                                          • Canopy, ROPS/FOPS, includes mirror (standard, USA)
                                                                                                            • Counterweight:
                                                                                                              •  *Rear mounted (basic)
                                                                                                              •  *Rear mounted (additional weight)
                                                                                                            • *Rear mounted (basic)
                                                                                                              • *Rear mounted (additional weight)
                                                                                                                • Engine enclosure
                                                                                                                  • Fan, reversible
                                                                                                                    • Fast-fill fuel system
                                                                                                                      • Fast oil change system for quick service to engine and transmission
                                                                                                                        • Guards
                                                                                                                          •  Fuel and hydraulic tank
                                                                                                                          •  Power bottom guard
                                                                                                                          •  Rear power train
                                                                                                                          •  Radiator, hinged, heavy duty
                                                                                                                          •  Rear tractor
                                                                                                                        • Fuel and hydraulic tank
                                                                                                                          • Power bottom guard
                                                                                                                            • Rear power train
                                                                                                                              • Radiator, hinged, heavy duty
                                                                                                                                • Rear tractor
                                                                                                                                  • Heaters
                                                                                                                                    •  Fuel
                                                                                                                                    •  Engine coolant
                                                                                                                                  • Fuel
                                                                                                                                    • Engine coolant
                                                                                                                                      • Laminated Thermo-shield
                                                                                                                                        • Light, rear (for use with ripper)
                                                                                                                                          • Operator arrangement, modified (improved viewing area and comfort for smaller operators)
                                                                                                                                            • Radiator core protector grid
                                                                                                                                              • Rigid drawbar
                                                                                                                                                • Rear screen (with cab)
                                                                                                                                                  • Rear screen (with canopy)
                                                                                                                                                    • *Rippers
                                                                                                                                                      •  Single shank-Standard arrangement
                                                                                                                                                      •  Single shank- Deep ripping (includes shank, pin puller)
                                                                                                                                                      •  Multi-shank (includes one shank)
                                                                                                                                                      •  Ripper shank (for multi-shank ripper)
                                                                                                                                                      •  Sweeps, logging
                                                                                                                                                      •  Tracks, pair, Heavy Duty Sealed and Lubricated:
                                                                                                                                                    • Single shank-Standard arrangement
                                                                                                                                                      • Single shank- Deep ripping (includes shank, pin puller)
                                                                                                                                                        • Multi-shank (includes one shank)
                                                                                                                                                          • Ripper shank (for multi-shank ripper)
                                                                                                                                                            • Sweeps, logging
                                                                                                                                                              • Tracks, pair, Heavy Duty Sealed and Lubricated:
                                                                                                                                                                • Track roller guard (non suspended)
                                                                                                                                                                  • Custom Arrangements
                                                                                                                                                                    •  Hydraulic scraper towing arrangement
                                                                                                                                                                    •  LGP guage arrangement
                                                                                                                                                                    •  Sound suppressiong arrangement
                                                                                                                                                                    •  *Waste handling arrangement
                                                                                                                                                                    •  *Winch arrangement
                                                                                                                                                                    •  *Woodchip arrangement
                                                                                                                                                                    •  * A rear attachment and /or counterweight is recommended for improved balance and performance.
                                                                                                                                                                  • MS = Moderate Service
                                                                                                                                                                    • ES = Extreme Service
                                                                                                                                                                      • PPR = Positive Pin Retention
                                                                                                                                                                        • TRAP = Trapezoidal
                                                                                                                                                                          • CHOPPER = Waste Disposal

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