Caterpillar 785C Dump Truck

Approximate Weights – Dual Slope

Chassis 164,134 lbs (74,450 kg)
Gross Weight – Empty 211,035 lbs (95,724 kg)

Approximate Weights – Flat Floor

Body 56,630 lbs (25,687 kg)
Chassis 164,134 lbs (74,450 kg)

Articulating/Rigid

Articulating/Rigid Rigid

Body Hoists

Body Lower Time – Float 16.2 seconds
Body Raise Time – High Idle 15.2 seconds
Pump Flow – High Idle 198 gpm (749 lpm)
Relief Valve Setting – Lower 74 psi
Relief Valve Setting – Raise 2500 psi

Capacity – Dual Slope – 100% Fill Factor

Heaped 2:1 (SAE) 96 cu yd (73 cu m)
Struck 74 cu yd (57 cu m)

Capacity – Flat Floor – 100% Fill Factor

Struck 96 cu yd (73 cu m)

Dimensions

Dump Ground Clearance 4 ft (1 m)
Dump Height 37 ft (11 m)
Ground Clearance 3 ft (1 m)
Overall Height 19 ft (6 m)
Overall Length 36 ft (11 m)
Overall Width 21 ft (6 m)
Wheelbase 17 ft (5 m)

DRIVE SYSTEM

Drive Config 4×2

Dump

Dump Angle 49 degrees
Load Capacity – heaped 119 cu yd (91 cu m)
Load Capacity – Struck 96 cu yd (73 cu m)
Lower Time 15.9 seconds
Raise Time 15.2 seconds

Engine

Bore 7 in (17 cm)
Displacement 3,158 cu in (51,750 cu cm)
Engine Model Cat 3512B-EUI
Gross Power 1,451 hp (1,082 kw)
Gross Power – SAE J1995 1,450 hp (1,081 kw)
Make Cat
Model 3512B
Net Power 1,348 hp (1,005 kw)
Net Power – 80/1269/EEC 1,348 hp (1,005 kw)
Net Power – Cat 1,348 hp (1,005 kw)
Net Power – ISO 9249 1,348 hp (1,005 kw)
Net Power – SAE J1349 1,348 hp (1,005 kw)
Number of Cylinders 16
Power Measured @ 1750 rpm
Rated Engine Speed 169.4 rpm
Stroke 8 in (19 cm)
Torque Measured @ Turbocharged rpm

Final Drives

Planetary Ratio 10.83:1

Operating Specifications

Brake/Hoist System Fluid Capacity 89 gal (337 l)
Cooling System Fluid Capacity 100 gal (379 l)
Diff and Final Drive Fluid Capacity 115 gal (435 l)
Engine Oil Capacity 24 gal (91 l)
Fuel Capacity 500 gal (1,893 l)
Hydraulic System Fluid Capacity 169 gal (641 l)
Lower Time 15.9 seconds
Operating Voltage 24 volts
Raise Time 15.2 seconds
Steering System Fluid Capacity 31 gal (117 l)
Tire Size 33.00-R51 tires
Top Speed – Loaded 34 mph (55 kph)
Turning Circle – Clearance Diameter 66 ft (20 m)

ROPS

ROPS/FOPS Standards 46865

Service Refill Capacities

Brake / Hoist / Fan Hydraulic Tank 102 gal (386 l)
Brake Hoist System – Includes Tank 169 gal (640 l)
Cooling System 100 gal (379 l)
Fuel Tank – Standard 500 gal (1,893 l)
Steering System – Including Tank 31 gal (117 l)
Steering Tank 24 gal (91 l)
Torque Converter – Transmission Sump 164,134 gal (621,247 l)
Torque Converter/Transmission System – Including Sump 66 gal (248 l)

Sound

Sound Standards ANSI/SAE J1166 MAY90 SAE J88 APR95

Suspension

Rear axle – Oscillation 12.1 degrees

Transmission

Forward – 1 8 mph (12 kph)
Forward – 2 10 mph (16 kph)
Forward – 3 14 mph (22 kph)
Forward – 4 19 mph (30 kph)
Forward – 5 25 mph (41 kph)
Forward – 6 34 mph (55 kph)
Max Speed 34 mph (55 kph)
Number of Gears – Forward 6
Number of Gears – Reverse 1
Reverse 7 mph (11 kph)
Transmission Type Six-speed planetary

Weights

Body Weight 164,134 lbs (74,450 kg)
Empty Weight 225,200 lbs (102,149 kg)
Front Axle – Empty 47%
Front Axle – Loaded 33%
Gross Machine Operating Weight (GMW) SAE J1040 APR88 ISO 3471:1994 lbs
Loaded Weight 550,000 lbs (249,476 kg)
Operating Weight 550,000 lbs (249,476 kg)
Operating Weight – Loaded SAE J1511 OCT90 ISO 5010:1992 lbs
Rear Axle – Empty 53%
Rear Axle – Loaded 67%
Weight Distribution Front – empty 47%
Weight Distribution Front – loaded 33%
Weight Distribution Rear – empty 53%
Weight Distribution Rear – loaded 67%
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