CAT 785C Haul Truck

Dimensions

Overall Length 36.25 ft in (11024 mm)
Overall Width 20.6 ft in (6277 mm)
Overall Height 19 ft in (5769 mm)
Wheelbase 17 ft in (5182 mm)
Ground Clearance 3.24 ft in (987 mm)
Dump Height 36.83 ft in (11207 mm)
Dump Ground Clearance 4.21 ft in (1284 mm)

Dump

Dump Angle 49 degrees
Load Capacity – Struck 96 yd3 (74 m3)
Load Capacity – Heaped 119 yd3 (91 m3)
Rated Payload 300000 lb (136077.72 kg)
Lower Time 15.9 sec
Raise Time 15.2 sec

Engine Details

Number Of Cylinders 16
Engine Make CAT
Engine Model 3512B-EUI
Gross Power 1451 hp (1082 kw)
Net Power 1348 hp (1005.3 kw)
Power Measured @ 1750 rpm
Aspiration Turbocharged
Displacement 3158 cu in (51.8 L)
Torque Rise 23 %
Bore 6.7 in (170.2 mm)
Stroke 7.5 in (190.5 mm)
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 3512B-EUI

Operational Specs

Fuel Tank Capacity 500 gal (1893 L)
Cooling System Fluid Capacity 100 gal (379 L)
Engine Oil Capacity 24 gal (90 L)
Diff And Final Drive Fluid Capacity 115 gal (436 L)
Steering System Fluid Capacity 31 gal (117 L)
Brake/Hoist System Fluid Capacity 89 gal (337 L)
Hydraulic System Fluid Capacity 169.4 gal (641 L)
Operating Voltage 24 V
Alternator Supplied Amperage 75 amps
Tire Size 33.00-R51 tires

Transmission

Transmission Type Six-speed planetary
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 225200 lb (102150 kg)
Loaded Weight 550000 lb (249480 kg)
Weight Distribution Front – Empty 47 %
Weight Distribution Rear – Empty 53 %
Weight Distribution Front – Loaded 33 %
Weight Distribution Rear – Loaded 67 %

Tires

Standard Tires 33.00-R51 (E4) 33.00-R51 (E3)

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)
Raise Time 15.2 s
Lower Time 15.9 s
Steer Angle 36 degrees
Turning Diameter – Front 90.2 ft in (27.5 m)
Nominal Payload Capacity 300000 lb (136077.6 kg)
Machine Clearance Turning Diameter 100.4 ft in (30.7 m)
Sae (2:1) Capacity 102 yd3 (78 m3)

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 – Empty 47 %
Front Axle – Loaded 33 %
Rear Axle – Empty 53 %
Rear Axle – Loaded 67 %

Weights – Approximate

Chassis Weight 164134 lb (74450 kg)
Gross Machine Operating Weight 550000 lb (249475.9 kg)
Operating Weight – Empty – Flat Floor Body 225200 lb (102149.1 kg)
Operating Weight – Empty – Dual-Slope Body 211035 lb (95723.9 kg)

Capacity – Dual Slope – 100% Fill Factor

Struck 74 yd3 (56.6 m3)
Heaped (Sae 2:1) 102 yd3 (78 m3)

Capacity – Flat Floor – 100% Fill Factor

Struck 96 yd3 (73.4 m3)
Heaped (Sae 2:1) 119 yd3 (91 m3)

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)

Approximate Weights – Dual Slope

Body 46865 lb (21257.7 kg)
Chassis 164134 lb (74450 kg)
Front Axle – Empty 47 %
Front Axle – Loaded 33 %
Rear Axle – Empty 53 %
Rear Axle – Loaded 67 %
Gross Weight – Empty 211035 lb (95723.9 kg)

Approximate Weights – Flat Floor

Body 56630 lb (25687 kg)
Chassis 164134 lb (74450 kg)
Front Axle – Empty 47 %
Front Axle – Loaded 33 %
Rear Axle – Empty 53 %
Rear Axle – Loaded 67 %
Gross Weight – Empty 225200 lb (102149.1 kg)
Standard Liner 4400 lb (1995.9 kg)
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