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Cat D8R, D8R LGP, and D8R Series II specifications

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Listing-entry count
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Short answer

Cat D8R, D8R LGP, and D8R Series II: crawler dozers.

Selected configuration figures
ConfigurationDocumented field and quantity
D8R
Gross Power
328 hp
Operating Weight
73,850 lb
D8R LGP
Gross Power
328 hp
Operating Weight
74,360 lb
D8R Series II
Gross Power
310 hp
Operating Weight
82,960 lb
D8R, D8R LGP, and D8R Series II specification matrix — Listing labels reported by the source
Publisher nameSource guideListing-entry countLabels named by the source
CatD8R, D8R LGP, and D8R Series II3D8R, D8R LGP, and D8R Series II
Dimensions and weight
SpecificationD8RD8R LGPD8R Series II
Length W/ Blade21 ft20.61 ft21.56 ft
Width Over Tracks8.67 ft10.84 ft8.86 ft
Height To Top Of Cab11.48 ft11.46 ft11.52 ft
Length Of Track On Ground10.52 ft10.69 ft10.54 ft
Ground Clearance1.74 ft1.71 ft1.99 ft
Length W/O Blade14.95 ft14.95 ft16.18 ft
Undercarriage
SpecificationD8RD8R LGPD8R Series II
Track Gauge6.84 ft7.67 ft6.83 ft
Standard Shoe Size22.05 in38 in22.05 in
Ground Pressure13.1 psi7.6 psi14.67 psi
Ground Contact Area5,554 in29,746 in25,544 in2
Number Of Track Rollers Per Side888
SpecificationD8RD8R LGP
Number Of Shoes Per Side4444
Track Pitch8.51 in8.51 in
Engine
SpecificationD8RD8R LGPD8R Series II
Number Of Cylinders666
Engine Model3406C3406C3406E TA
Gross Power328 hp328 hp310 hp
Power Measured @2,100 rpm2,100 rpm2,000 rpm
Displacement893 cu in893 cu in891 cu in
SpecificationD8RD8R LGP
Net Power305 hp305 hp
AspirationTurbocharged and AftercooledTurbocharged and Aftercooled
Operational
SpecificationD8RD8R LGPD8R Series II
Operating Weight73,850 lb74,360 lb82,960 lb
Fuel Capacity165.2 gal165.2 gal165.2 gal
SpecificationD8RD8R LGP
Cooling System Fluid Capacity24.4 gal24.4 gal
Engine Oil Capacity8.6 gal8.6 gal
Hydraulic Fluid Capacity19.1 gal19.1 gal
Powertrain Fluid Capacity38.1 gal38.1 gal
Final Drives Fluid Capacity3.7 gal3.7 gal
Operating Voltage24 V24 V
Alternator Supplied Amperage50 amps50 amps
Transmission and speeds
SpecificationD8RD8R LGP
Transmission TypePower ShiftPower Shift
SpecificationD8RD8R LGPD8R Series II
Number Of Forward Gears333
Number Of Reverse Gears333
Max Speed - Forward6.7 mph6.7 mph6.6 mph
Max Speed - Reverse8.6 mph8.6 mph8.6 mph
Hydraulic System
SpecificationD8RD8R LGP
Pump TypePistonPiston
Relief Valve Pressure3,500 psi3,500 psi
Pump Flow Capacity79.3 gpm79.3 gpm
Standard Blade
SpecificationD8RD8R LGPD8R Series II
Blade width13 ft14.5 ft13 ft
Blade height66.6 in63.5 in66.6 in
Capacity11.4 yd311.2 yd311.4 yd3
Cutting Depth23 in23 in23 in
Variants — Source comparison annotation
Source guideDiffering-field count reported
D8R, D8R LGP, and D8R Series II34
Ratios
FigureD8RD8R LGPD8R Series II
Engine horsepower per 1,000 lb of weight4.14.13.7
Fuel tank per engine horsepower0.54 gal0.54 gal0.53 gal
FigureD8RD8R LGP
Pump flow per engine horsepower0.26 gpm0.26 gpm

History and service record of D8R, D8R LGP, and D8R Series II

  • D8R numbers and cab. Cat's D8R specalog lists a 3406C DITA engine at 239 kW (320 hp) net, standard operating weights of 37,557 to 38,192 kg, and an updated cab with integrated ROPS and a redesigned instrument panel. Specalog for D8R Track-Type Tractor AEHQ7378, Caterpillar.
  • Alerts on the monitor. The Cat Electronic Monitoring System uses three-level alerts for coolant flow and temperature, engine oil pressure, transmission oil temperature, alternator low voltage and transmission or hydraulic oil filter restriction. Specalog for D8R Track-Type Tractor AEHQ7378, Caterpillar.
  • Torque divider split. A single-stage torque divider sends 70 percent of engine torque through the converter and 30 percent through a direct-drive shaft, ahead of a planetary powershift with three speeds each way and differential steering that keeps full power to both tracks. Specalog for D8R Track-Type Tractor AEHQ7378, Caterpillar.
  • Tag-link blade mount and tiller control. The D8R mounts its blade with a tag-link design that brings it closer to the machine, and a tiller-bar steering control lets operators work precisely around structures and grade stakes. Specalog for D8R Track-Type Tractor AEHQ7378, Caterpillar.
D8R, D8R LGP, and D8R Series II: forum references — Forum-title search
Forum indexEquipment class queriedNames in the searchMatching titles
Heavy Equipment Forumscrawler dozerCat and the D8R line that the D8R, D8R LGP, D8R Series II belongs to (no title names the exact model)21
Topics named by those titles
Title topicTitles
engine power and smoke3
hydraulics2
transmission and drive2
Topic in the titleThreadsShare of matching threads
engine power and smoke314%
hydraulics210%
transmission and drive210%
Used market for the D8R, D8R LGP, and D8R Series II — Dated first-page listing snapshot
Observation dateListing sourceEquipment searchListings
2026-09-24MachineryTraderCat crawler dozer70
ModelListedModel yearsLowest askingHighest askingMedian askingMedian hours
D8R691995 to 2011$71,500$250,000$148,1892,500
D8R LGP12006None shownNone shownNone shownNone shown
D8R, D8R LGP, and D8R Series II: recall reference — Dated CPSC search
Search dateDatabaseNames queriedSearch result
2026-09-24U.S. Consumer Product Safety CommissionCat together with the crawler dozer D8R, D8R LGP, D8R Series IINo matching recall in this search

Sources for this page

Evidence classDocument, classification and recorded date
Reference site
  • Reference site: Cat D8R — RitchieSpecs. Observed 2026-09-24.
Reference site
  • Reference site: Cat D8R LGP — RitchieSpecs. Observed 2026-09-24.
Reference site
Forum threads
Published history
Used-market listings
Federal agency data

Cat D8R, D8R LGP, and D8R Series II: Configuration records

D8R
SpecificationSource figure
Engine
Number Of Cylinders6
Engine Model3406C
Gross Power328 hp
Net Power305 hp
Power Measured @2,100 rpm
Displacement893 cu in
AspirationTurbocharged and Aftercooled
Transmission and speeds
Number Of Forward Gears3
Number Of Reverse Gears3
Max Speed - Forward6.7 mph
Max Speed - Reverse8.6 mph
Transmission TypePower Shift
Dimensions and weight
Height To Top Of Cab11.48 ft
Length W/ Blade21 ft
Width Over Tracks8.67 ft
Length Of Track On Ground10.52 ft
Length W/O Blade14.95 ft
Operational
Fuel Capacity165.2 gal
Cooling System Fluid Capacity24.4 gal
Engine Oil Capacity8.6 gal
Operating Voltage24 V
Alternator Supplied Amperage50 amps
Powertrain Fluid Capacity38.1 gal
Final Drives Fluid Capacity3.7 gal
Hydraulic Fluid Capacity19.1 gal
Hydraulic System
Relief Valve Pressure3,500 psi
Pump Flow Capacity79.3 gpm
Pump TypePiston
Undercarriage
Track Gauge6.84 ft
Standard Shoe Size22.05 in
Number Of Shoes Per Side44
Ground Pressure13.1 psi
Ground Contact Area5,554 in2
Number Of Track Rollers Per Side8
Track Pitch8.51 in
Standard Blade
Cutting Depth23 in
Additional specifications
Ground Clearance1.74 ft
Operating Weight73,850 lb
Blade width13 ft
Blade height66.6 in
Capacity11.4 yd3

Source

D8R LGP
SpecificationSource figure
Engine
Number Of Cylinders6
Engine Model3406C
Gross Power328 hp
Net Power305 hp
Power Measured @2,100 rpm
Displacement893 cu in
AspirationTurbocharged and Aftercooled
Transmission and speeds
Number Of Forward Gears3
Number Of Reverse Gears3
Max Speed - Forward6.7 mph
Max Speed - Reverse8.6 mph
Transmission TypePower Shift
Dimensions and weight
Height To Top Of Cab11.46 ft
Length W/ Blade20.61 ft
Width Over Tracks10.84 ft
Length Of Track On Ground10.69 ft
Length W/O Blade14.95 ft
Operational
Fuel Capacity165.2 gal
Cooling System Fluid Capacity24.4 gal
Engine Oil Capacity8.6 gal
Operating Voltage24 V
Alternator Supplied Amperage50 amps
Powertrain Fluid Capacity38.1 gal
Final Drives Fluid Capacity3.7 gal
Hydraulic Fluid Capacity19.1 gal
Hydraulic System
Relief Valve Pressure3,500 psi
Pump Flow Capacity79.3 gpm
Pump TypePiston
Undercarriage
Track Gauge7.67 ft
Standard Shoe Size38 in
Number Of Shoes Per Side44
Ground Pressure7.6 psi
Ground Contact Area9,746 in2
Number Of Track Rollers Per Side8
Track Pitch8.51 in
Standard Blade
Cutting Depth23 in
Additional specifications
Ground Clearance1.71 ft
Operating Weight74,360 lb
Blade width14.5 ft
Blade height63.5 in
Capacity11.2 yd3

Source

D8R Series II
SpecificationSource figure
Engine
Number Of Cylinders6
Engine Model3406E TA
Gross Power310 hp
Power Measured @2,000 rpm
Displacement891 cu in
Transmission and speeds
Number Of Forward Gears3
Number Of Reverse Gears3
Max Speed - Forward6.6 mph
Max Speed - Reverse8.6 mph
Dimensions and weight
Height To Top Of Cab11.52 ft
Length W/ Blade21.56 ft
Width Over Tracks8.86 ft
Length Of Track On Ground10.54 ft
Length W/O Blade16.18 ft
Operational
Fuel Capacity165.2 gal
Undercarriage
Track Gauge6.83 ft
Standard Shoe Size22.05 in
Ground Pressure14.67 psi
Ground Contact Area5,544 in2
Number Of Track Rollers Per Side8
Standard Blade
Cutting Depth23 in
Additional specifications
Ground Clearance1.99 ft
Operating Weight82,960 lb
Blade width13 ft
Blade height66.6 in
Capacity11.4 yd3

Source

Compare Cat D8R, D8R LGP, D8R Series II
Dimensions and weight
SpecificationD8RD8R LGPD8R Series II
Length W/ Blade21 ft20.61 ft21.56 ft
Width Over Tracks8.67 ft10.84 ft8.86 ft
Height To Top Of Cab11.48 ft11.46 ft11.52 ft
Length Of Track On Ground10.52 ft10.69 ft10.54 ft
Ground Clearance1.74 ft1.71 ft1.99 ft
Length W/O Blade14.95 ft14.95 ft16.18 ft
Undercarriage
SpecificationD8RD8R LGPD8R Series II
Track Gauge6.84 ft7.67 ft6.83 ft
Standard Shoe Size22.05 in38 in22.05 in
Ground Pressure13.1 psi7.6 psi14.67 psi
Ground Contact Area5,554 in29,746 in25,544 in2
Number Of Track Rollers Per Side888
Engine
SpecificationD8RD8R LGPD8R Series II
Number Of Cylinders666
Engine Model3406C3406C3406E TA
Gross Power328 hp328 hp310 hp
Power Measured @2,100 rpm2,100 rpm2,000 rpm
Displacement893 cu in893 cu in891 cu in
Operational
SpecificationD8RD8R LGPD8R Series II
Operating Weight73,850 lb74,360 lb82,960 lb
Fuel Capacity165.2 gal165.2 gal165.2 gal
Transmission and speeds
SpecificationD8RD8R LGPD8R Series II
Number Of Forward Gears333
Number Of Reverse Gears333
Max Speed - Forward6.7 mph6.7 mph6.6 mph
Max Speed - Reverse8.6 mph8.6 mph8.6 mph
Standard Blade
SpecificationD8RD8R LGPD8R Series II
Blade width13 ft14.5 ft13 ft
Blade height66.6 in63.5 in66.6 in
Capacity11.4 yd311.2 yd311.4 yd3
Cutting Depth23 in23 in23 in

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