Caterpillar 785D Dump Truck

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 – Raise 2500 psi

Dimensions

Dump Ground Clearance 4 ft (1 m)
Dump Height 39 ft (12 m)
Ground Clearance 3 ft (1 m)
Overall Height 17 ft (5 m)
Overall Length 38 ft (12 m)
Overall Width 22 ft (7 m)
Wheelbase 17 ft (5 m)

DRIVE SYSTEM

Drive Config 2WD

Dump

Load Capacity – heaped 102 cu yd (78 cu m)
Lower Time 15.9 seconds
Raise Time 15.2 seconds
Rated Payload 300,000 lbs (136,078 kg)

Engine

Bore 7 in (17 cm)
Displacement 3,574 cu in (58,561 cu cm)
Engine Model Cat 3512C HD
Gross Power 1,450 hp (1,081 kw)
Gross Power – SAE J1995 1,450 hp (1,081 kw)
Make Cat
Model 3512C HD
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)
Power Measured @ 1750 rpm
Rated Engine Speed 89.1 rpm
Stroke 8 in (21 cm)

Final Drives

Planetary Ratio 10.83:1
Total Reduction Ratio 22.75:1

Operating Specifications

Brake/Hoist System Fluid Capacity 169 gal (641 l)
Cooling System Fluid Capacity 100 gal (379 l)
Diff and Final Drive Fluid Capacity 115 gal (436 l)
Engine Oil Capacity 54 gal (204 l)
Fuel Capacity 500 gal (1,893 l)
Hydraulic System Fluid Capacity 89 gal (337 l)
Nominal Payload Capacity 115 lbs (52 kg)
Steering System Fluid Capacity 31 gal (117 l)
Tire Size 33.00-51 50PR (E3 & E4)
Top Speed – Loaded 34 mph (55 kph)
Turning Circle – Clearance Diameter 66 ft (20 m)

Service Refill Capacities

Brake Hoist System – Includes Tank 169 gal (640 l)
Cooling System 100 gal (379 l)
Fuel Tank – Optional 20,831-30,623 kg (45,924-67,512 lbs)
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 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)

Weights

Chassis Weight 89 lbs (40 kg)
Empty Weight 259,257 lbs (117,597 kg)
Loaded Weight 550,000 lbs (249,476 kg)
Operating Weight – Loaded SAE J1511 OCT90 ISO 5010:1992 lbs
Rear Axle – Empty 54-55%
Weight Distribution Front – empty 46%
Weight Distribution Front – loaded 33%
Weight Distribution Rear – empty 55%
Weight Distribution Rear – loaded 67%
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