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Caterpillar 785C Off-Highway Truck

Approximate Weights - Dual Slope

Body46865 lbs
Chassis164134 lbs
Gross Weight - Empty211035 lbs

Approximate Weights - Flat Floor

Body56630 lbs
Chassis164134 lbs


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 - Lower74 psi
Relief Valve Setting - Raise2500 psi


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

Capacity - Dual Slope - 100% Fill Factor

Heaped (SAE 2:1)102 cu yd
Heaped 2:1 (SAE)96 cu yd
Struck74 cu yd

Capacity - Flat Floor - 100% Fill Factor

Struck96 cu yd


Dump Ground Clearance4.3 ft
Dump Height36.9 ft
Ground Clearance3.3 ft
Overall Height19 ft
Overall Length36.3 ft
Overall Width20.6 ft
Wheelbase17 ft


Drive Config 4x2


Dump Angle49 deg
Load Capacity - heaped119 cu yd
Load Capacity - Struck96 cu yd
Lower Time15.9 seconds
Raise Time15.2 seconds
Rated Payload300000 lbs


Bore6.7 in
Displacement3158 cu in
Engine ModelCat 3512B-EUI
Gross Power1451 hp
Gross Power - SAE J19951450 hp
Net Power1348 hp
Net Power - 80/1269/EEC1348 hp
Net Power - Cat1348 hp
Net Power - ISO 92491348 hp
Net Power - SAE J13491348 hp
Number of Cylinders16
Power Measured @1750 rpm
Rated Engine Speed169.4 rpm
Stroke7.5 in
Torque Measured @Turbocharged rpm
Torque Rise23%

Final Drives

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

Operating Specifications

Alternator Supplied Amperage75 amps
Brake/Hoist System Fluid Capacity89 gal
Cooling System Fluid Capacity100 gal
Diff and Final Drive Fluid Capacity115 gal
Engine Oil Capacity24 gal
Fuel Capacity500 gal
Hydraulic System Fluid Capacity169.4 gal
Lower Time15.9 seconds
Nominal Payload Capacity300000 lbs
Operating Voltage24 volts
Raise Time15.2 seconds
Steer Angle36 deg
Steering System Fluid Capacity31 gal
Tire Size33.00-R51 tires
Top Speed - Loaded34 mph
Turning Circle - Clearance Diameter65.6 ft


ROPS StandardsSAE J1040 APR88 ISO 3471:1994
ROPS/FOPS Standards46865

Service Refill Capacities

Brake / Hoist / Fan Hydraulic Tank102 gal
Brake Hoist System - Includes Tank169 gal
Brake/Hoist Hydraulic Tank89 gal
Cooling System100 gal
Crankcase54 gal
Differential - Final Drives115 gal
Fuel Tank - Standard500 gal
Steering System - Including Tank31 gal
Steering Tank24 gal
Torque Converter - Transmission Sump164134 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 (E4) 33.00-R51 (E3)


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
Transmission TypeSix-speed planetary


Body Weight164134 lbs
Chassis Weight164134 lbs
Empty Weight225200 lbs
Front Axle - Empty47%
Front Axle - Loaded33%
Gross Machine Operating Weight (GMW)SAE J1040 APR88 ISO 3471:1994 lbs
Loaded Weight550000 lbs
Operating Weight 550000 lbs
Operating Weight - LoadedSAE J1511 OCT90 ISO 5010:1992 lbs
Rear Axle - Empty53%
Rear Axle - Loaded67%
Weight Distribution Front - empty47%
Weight Distribution Front - loaded33%
Weight Distribution Rear - empty53%
Weight Distribution Rear - loaded67%

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39.04690 \\ -77.49030 \\ Ashburn \\ PA