Caterpillar 785D Rock Truck
Dimensions
Dimensions
Overall Length
37.89ft in
Overall Width
21.79ft in
Overall Height
16.81ft in
Wheelbase
17ft in
Ground Clearance
3.24ft in
Dump Height
38.75ft in
Dump Ground Clearance
3.94ft in
Dump
Lower Time
15.9sec
Load Capacity - Heaped
102yd3
Rated Payload
300000lb
Raise Time
15.2sec
Specifications
Engine
Engine Make
2236
Engine Model
3512C HD
Net Power
1348hp
Gross Power
1450hp
Power Measured @
1750rpm
Displacement
3573.6cu in
Torque Rise
23%
Bore
6.7in
Stroke
8.4in
Rated Power
1450hp
Net Power - Cat
1348hp
Net Power - Iso 9249
1348hp
Net Power - Sae J1349
1348hp
Net Power - 80/1269/Eec
1348hp
Gross Power - Sae J1995
1450hp
Engine Model
Cat 3512C HD
Operational
Fuel Capacity
500.1gal
Cooling System Fluid Capacity
100.2gal
Engine Oil Capacity
53.9gal
Diff And Final Drive Fluid Capacity
115.2gal
Steering System Fluid Capacity
31gal
Brake/Hoist System Fluid Capacity
169.4gal
Hydraulic System Fluid Capacity
89.1gal
Tire Size
33.00-51 50PR (E3 & E4)
Transmission
Number Of Gears - Forward
6
Number Of Gears - Reverse
1
Max Speed
34mph
Reverse
6.8 mile/h
Forward - 1
7.5mph
Forward - 2
10.2mph
Forward - 3
13.8mph
Forward - 4
18.6mph
Forward - 5
25.2mph
Forward - 6
34mph
Steering
Steering Standards
SAE J1511 OCT90 ISO 5010:1992
Weights
Empty Weight
259257lb
Loaded Weight
550000.4lb
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
9497in2
Brake Surface - Rear
13908in2
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
34mph
Steer Angle
36degrees
Turning Diameter - Front
97.7ft in
Machine Clearance Turning Diameter
108.9ft in
Minimum Target Payload
288000lb
Maximum Target Payload
314000lb
Target Payload - Dual Slope*
292000lb
Service Refill Capacities
Cooling System
100gal
Differential - Final Drives
115gal
Steering Tank
24gal
Steering System - Including Tank
31gal
Brake Hoist System - Includes Tank
169gal
Crankcase
54gal
Brake/Hoist Hydraulic Tank
89gal
Torque Converter/Transmission System - Including Sump
65.6gal
Fuel Tank - Standard
500gal
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)
550000lb
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
12.1in
Effective Cylinder Stroke - Rear
6.5in
Body - Dual Slope
Body Weight
49150lb
Heaped (Sae 2:1)
102yd3
Body - X
Body Weight
55468lb
Heaped (Sae 2:1)
111yd3
