Overview
The D8R offers unequaled balance, traction and power to keep large blade loads moving fast.
Benefits & Features
Specifications
Benefits & Features
Transmission
Speed and Direction Changes
Modulation system permits fast speed and direction changes.
Service
Modular transmission and bevel gear slide into rear case for servicing ease, even with ripper installed.
Maximum Cooling
Oil-to-water cooler for maximum cooling capacity.
Maximum Clutch Life
Forced oil flow lubricates and cools clutch packs to provide maximum clutch life.
Speed and Direction Changes
Modulation system permits fast speed and direction changes.
Service
Modular transmission and bevel gear slide into rear case for servicing ease, even with ripper installed.
Maximum Cooling
Oil-to-water cooler for maximum cooling capacity.
Maximum Clutch Life
Forced oil flow lubricates and cools clutch packs to provide maximum clutch life.
Cooling System
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.
Servicing
The servicing of the AMOCS can be performed without tilting the radiator guard.
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.
Servicing
The servicing of the AMOCS can be performed without tilting the radiator guard.
Differential Steering
Uninterrupted Power
Differential steering delivers uninterrupted power to both tracks to help maintain blade loads, reduce cycle times and provide enhanced side slope capability.
Steering
The operator can steer and change directions easily with one hand.
Turning
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.
Uninterrupted Power
Differential steering delivers uninterrupted power to both tracks to help maintain blade loads, reduce cycle times and provide enhanced side slope capability.
Steering
The operator can steer and change directions easily with one hand.
Turning
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.
Uninterrupted Power
Differential steering delivers uninterrupted power to both tracks to help maintain blade loads, reduce cycle times and provide enhanced side slope capability.
Steering
The operator can steer and change directions easily with one hand.
Turning
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.
Uninterrupted Power
Differential steering delivers uninterrupted power to both tracks to help maintain blade loads, reduce cycle times and provide enhanced side slope capability.
Steering
The operator can steer and change directions easily with one hand.
Turning
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.
Structures
Mainframe
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.
Durability
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.
Mainframe
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.
Durability
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.
Mainframe
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.
Durability
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.
Mainframe
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.
Durability
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.
Mainframe
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.
Durability
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.
Undercarriage
Design
Suspended undercarriage design absorbs impact loads to reduce the shock loads transferred to the undercarriage.
Suspension
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.
Track
Sealed and lubricated track. Permanently coats the track pin with a sealed-in lubricant, minimizing metal-to-metal contact.
Design
Suspended undercarriage design absorbs impact loads to reduce the shock loads transferred to the undercarriage.
Suspension
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.
Track
Sealed and lubricated track. Permanently coats the track pin with a sealed-in lubricant, minimizing metal-to-metal contact.
Design
Suspended undercarriage design absorbs impact loads to reduce the shock loads transferred to the undercarriage.
Suspension
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.
Track
Sealed and lubricated track. Permanently coats the track pin with a sealed-in lubricant, minimizing metal-to-metal contact.
Design
Suspended undercarriage design absorbs impact loads to reduce the shock loads transferred to the undercarriage.
Suspension
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.
Track
Sealed and lubricated track. Permanently coats the track pin with a sealed-in lubricant, minimizing metal-to-metal contact.
Design
Suspended undercarriage design absorbs impact loads to reduce the shock loads transferred to the undercarriage.
Suspension
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.
Track
Sealed and lubricated track. Permanently coats the track pin with a sealed-in lubricant, minimizing metal-to-metal contact.
Operator Station
View
Clear full-circle view.
Operation
Comfortable, non-tiring operation.
Controls
Low effort controls are easily accessible and provide sure, precise maneuvering with less operator fatigue.
Seat
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.
View
Clear full-circle view.
Operation
Comfortable, non-tiring operation.
Controls
Low effort controls are easily accessible and provide sure, precise maneuvering with less operator fatigue.
Seat
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.
View
Clear full-circle view.
Operation
Comfortable, non-tiring operation.
Controls
Low effort controls are easily accessible and provide sure, precise maneuvering with less operator fatigue.
Seat
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.
View
Clear full-circle view.
Operation
Comfortable, non-tiring operation.
Controls
Low effort controls are easily accessible and provide sure, precise maneuvering with less operator fatigue.
Seat
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.
View
Clear full-circle view.
Operation
Comfortable, non-tiring operation.
Controls
Low effort controls are easily accessible and provide sure, precise maneuvering with less operator fatigue.
Seat
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 Tool Attachments
Bulldozers
The 8SU blade and the 8U blade make full use of the D8R's power.
Rippers
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.
Bulldozers
The 8SU blade and the 8U blade make full use of the D8R's power.
Rippers
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.
Bulldozers
The 8SU blade and the 8U blade make full use of the D8R's power.
Rippers
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.
Bulldozers
The 8SU blade and the 8U blade make full use of the D8R's power.
Rippers
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.
Bulldozers
The 8SU blade and the 8U blade make full use of the D8R's power.
Rippers
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
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.
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.
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.
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.
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.
Serviceability
Servicing
Built-in servicing ease. Less service time means more working time.
Ecology Drains
Ecology drains provide an environmentally safer method to drain fluids.
Filters
Spin-on fuel and engine oil filters save changing time.
Cooling
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.
Servicing
Built-in servicing ease. Less service time means more working time.
Ecology Drains
Ecology drains provide an environmentally safer method to drain fluids.
Filters
Spin-on fuel and engine oil filters save changing time.
Cooling
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.
Servicing
Built-in servicing ease. Less service time means more working time.
Ecology Drains
Ecology drains provide an environmentally safer method to drain fluids.
Filters
Spin-on fuel and engine oil filters save changing time.
Cooling
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.
Servicing
Built-in servicing ease. Less service time means more working time.
Ecology Drains
Ecology drains provide an environmentally safer method to drain fluids.
Filters
Spin-on fuel and engine oil filters save changing time.
Cooling
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
Quality
Dealers committed to fast, quality customer support.
Response
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.
Experts
Your dealer is also expert at arranging affordable lease, rental or purchase financing for all Caterpillar products.
Quality
Dealers committed to fast, quality customer support.
Response
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.
Experts
Your dealer is also expert at arranging affordable lease, rental or purchase financing for all Caterpillar products.
Data not available.
Standard Equipment
- Ecology Drains
- Engine Oil
- Engine Coolant
- Hydraulic Oil
- Powertrain Case
- Transmission Case
- Torque Converter
- Lighting System, Halogen
- Two Lights Forward in Fender
- Two Rear on Fuel Tank
- Track, Sealed and Lubricated
- 560 mm (22 in) Moderate Service Track Shoes
- Two-piece Master Links
- Vandalism Protection Includes
- Cap Locks for Fuel Tank
- Engine Oil Filler
- Radiator Filler and Dip Stick
- Battery Box Locks (Two)
- Left Hand Service Area Cover Lock