CAT 785D Haul Truck


Dimensions

Overall Length 37.89 ft in (11548 mm)
Overall Width 21.79 ft in (6640 mm)
Overall Height 16.81 ft in (5122 mm)
Wheelbase 17 ft in (5180 mm)
Ground Clearance 3.24 ft in (987 mm)
Dump Height 38.75 ft in (11809 mm)
Dump Ground Clearance 3.94 ft in (1200 mm)

Dump

Lower Time 15.9 sec
Load Capacity – Heaped 102 yd3 (77.99 m3)
Rated Payload 300000 lb (136077.72 kg)
Raise Time 15.2 sec

Engine Details

Engine Make CAT
Engine Model 3512C HD
Net Power 1348 hp (1005.3 kw)
Gross Power 1450 hp (1081.3 kw)
Power Measured @ 1750 rpm
Displacement 3573.6 cu in (58.6 L)
Torque Rise 23 %
Bore 6.7 in (170.2 mm)
Stroke 8.4 in (213.4 mm)
Rated Power 1450 hp (1081.3 kw)
Net Power – Cat 1348 hp (1005.3 kw)
Net Power – Iso 9249 1348 hp (1005.3 kw)
Net Power – Sae J1349 1348 hp (1005.3 kw)
Net Power – 80/1269/Eec 1348 hp (1005.3 kw)
Gross Power – Sae J1995 1450 hp (1081.3 kw)
Engine Model Cat 3512C HD

Operational Specs

Fuel Tank Capacity 500.1 gal (1893 L)
Cooling System Fluid Capacity 100.2 gal (379 L)
Engine Oil Capacity 53.9 gal (204 L)
Diff And Final Drive Fluid Capacity 115.2 gal (436 L)
Steering System Fluid Capacity 31 gal (117 L)
Brake/Hoist System Fluid Capacity 169.4 gal (641 L)
Hydraulic System Fluid Capacity 89.1 gal (337 L)
Tire Size 33.00-51 50PR (E3 & E4)

Transmission

Number Of Gears – Forward 6
Number Of Gears – Reverse 1
Max Speed 34 mph (54.8 km/h)
Reverse 6.8 mile/h
Forward – 1 7.5 mph (12.1 km/h)
Forward – 2 10.2 mph (16.5 km/h)
Forward – 3 13.8 mph (22.3 km/h)
Forward – 4 18.6 mph (30 km/h)
Forward – 5 25.2 mph (40.6 km/h)
Forward – 6 34 mph (54.8 km/h)

Steering

Steering Standards SAE J1511 OCT90 ISO 5010:1992

Weights

Empty Weight 259257 lb (117597 kg)
Loaded Weight 550000.4 lb (249476 kg)
Weight Distribution Front – Empty 46 %
Weight Distribution Rear – Empty 55 %
Weight Distribution Front – Loaded 33 %
Weight Distribution Rear – Loaded 67 %

Tires

Standard Tires 33.00-R51 (E3 & E4)

Brakes

Brake Surface – Front 9497 in2 (6.2 m2)
Brake Surface – Rear 13908 in2 (9 m2)
Standards SAE J1473 OCT90 ISO 3450-1985

Body Hoists

Pump Flow – High Idle 198 gal/min
Relief Valve Setting – Raise 2500 psi
Body Raise Time – High Idle 15.2 s
Body Lower Time – Float 16.2 s
Body Power Down – High Idle 15.9 s
Body Lower Time – High Idle 15.9 s

Final Drives

Planetary Ratio 10.83:1
Differential Ratio 2.10:1
Total Reduction Ratio 22.75:1

Operating Specifications

Top Speed – Loaded 34 mph (54.8 km/h)
Steer Angle 36 degrees
Turning Diameter – Front 97.7 ft in (29.8 m)
Machine Clearance Turning Diameter 108.9 ft in (33.2 m)
Minimum Target Payload 288000 lb (130634.5 kg)
Maximum Target Payload 314000 lb (142427.9 kg)
Target Payload – Dual Slope* 292000 lb (132448.9 kg)

Service Refill Capacities

Cooling System 100 gal (378.6 L)
Differential – Final Drives 115 gal (435.4 L)
Steering Tank 24 gal (90.9 L)
Steering System – Including Tank 31 gal (117.4 L)
Brake Hoist System – Includes Tank 169 gal (639.8 L)
Crankcase 54 gal (204.5 L)
Brake/Hoist Hydraulic Tank 89 gal (337 L)
Torque Converter/Transmission System – Including Sump 65.6 gal (248 L)
Fuel Tank – Standard 500 gal (1892.8 L)

Weight Distributions – Approximate

Front Axle – Loaded – Target 33 %
Rear Axle – Loaded – Target 67 %
Front Axle – Empty* 45-46%
Rear Axle – Empty* 54-55%

Weights – Approximate

Body Weight Range 20 831 – 30 623 kg 45,924 – 67,512 lb
Gross Machine Operating Weight (Gmw) 550000 lb (249475.9 kg)
Minimum/Maximum Operating Chassis Weight Range (Ocw) 83 304 – 84 668 kg 183,654 – 186,661 lb
Minimum/Maximum Operating Chassis Weight Range Empty (Eomw) 106 218 – 117 597 kg 234,170 – 259,257 lb

Rops

Rops Standards SAE J1040 APR88 ISO 3471:1994

Sound

Sound Standards ANSI/SAE J1166 MAY90 SAE J88 APR95

Suspension

Effective Cylinder Stroke – Front 12.1 in (307.4 mm)
Effective Cylinder Stroke – Rear 6.5 in (165.1 mm)

Body – Dual Slope

Body Weight 49150 lb (22294.1 kg)
Heaped (Sae 2:1) 102 yd3 (78 m3)

Body – X

Body Weight 55468 lb (25159.9 kg)
Heaped (Sae 2:1) 111 yd3 (84.9 m3)
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