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Caterpillar 785D Off-Highway Truck


Articulating/Rigid Rigid

Body Hoists

Body Lower Time - Float16.2 seconds
Body Power Down - High Idle15.9 seconds
Body Raise Time - High Idle15.2 seconds
Pump Flow - High Idle198 gpm
Relief Valve Setting - Raise2500 psi


Brake Surface - Front9497 cu in
Brake Surface - Rear13908 cu in
StandardsSAE J1473 OCT90 ISO 3450-1985


Dump Ground Clearance4 ft
Dump Height38.8 ft
Ground Clearance3.3 ft
Overall Height16.9 ft
Overall Length37.9 ft
Overall Width21.8 ft
Wheelbase17 ft


Drive Config 2WD


Load Capacity - heaped102 cu yd
Lower Time15.9 seconds
Raise Time15.2 seconds
Rated Payload300000 lbs


Bore6.7 in
Displacement3573.6 cu in
Engine ModelCat 3512C HD
Gross Power1450 hp
Gross Power - SAE J19951450 hp
Model3512C HD
Net Power1348 hp
Net Power - 80/1269/EEC1348 hp
Net Power - Cat1348 hp
Net Power - ISO 92491348 hp
Net Power - SAE J13491348 hp
Power Measured @1750 rpm
Rated Engine Speed89.1 rpm
Stroke8.4 in
Torque Rise23%

Final Drives

Differential Ratio2.10:1
Planetary Ratio10.83:1
Total Reduction Ratio22.75:1

Operating Specifications

Brake/Hoist System Fluid Capacity169.4 gal
Cooling System Fluid Capacity100.2 gal
Diff and Final Drive Fluid Capacity115.2 gal
Engine Oil Capacity53.9 gal
Fuel Capacity500.1 gal
Hydraulic System Fluid Capacity89.1 gal
Nominal Payload Capacity115 lbs
Steer Angle36 deg
Steering System Fluid Capacity31 gal
Tire Size33.00-51 50PR (E3 & E4)
Top Speed - Loaded34 mph
Turning Circle - Clearance Diameter65.6 ft


ROPS StandardsSAE J1040 APR88 ISO 3471:1994

Service Refill Capacities

Brake Hoist System - Includes Tank169 gal
Brake/Hoist Hydraulic Tank89 gal
Cooling System100 gal
Crankcase54 gal
Differential - Final Drives115 gal
Fuel Tank - Optional20831 - 30,623 kg -
Fuel Tank - Standard500 gal
Steering System - Including Tank31 gal
Steering Tank24 gal
Torque Converter/Transmission System - Including Sump65.6 gal


Sound StandardsANSI/SAE J1166 MAY90 SAE J88 APR95

Steering System

Steering StandardsSAE J1511 OCT90 ISO 5010:1992


Effective Cylinder Stroke - Front12.1 in
Effective Cylinder Stroke - Rear6.5 in
Rear axle - Oscillation12.1 deg


Standard Tires33.00-R51 (E3 & E4)


Forward - 17.5 mph
Forward - 210.2 mph
Forward - 313.8 mph
Forward - 418.6 mph
Forward - 525.2 mph
Forward - 634 mph
Max Speed34 mph
Number of Gears - Forward6
Number of Gears - Reverse1
Reverse6.8 mph


Body Weight Range20 831 - 30 623 kg 45,924 - 67,512 lb
Chassis Weight89 lbs
Empty Weight259257 lbs
Front Axle - Empty45-46%
Gross Machine Operating Weight (GMW)550000 lbs
Loaded Weight550000.4 lbs
Operating Weight - LoadedSAE J1511 OCT90 ISO 5010:1992 lbs
Rear Axle - Empty54-55%
Weight Distribution Front - empty46%
Weight Distribution Front - loaded33%
Weight Distribution Rear - empty55%
Weight Distribution Rear - loaded67%

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    39.04690 \\ -77.49030 \\ Ashburn \\ PA