Caterpillar 789C Rock Truck
Dimensions
Dimensions
Overall Length
39.92ft in
Overall Width
25.18ft in
Overall Height
20.25ft in
Wheelbase
18.68ft in
Ground Clearance
3.83ft in
Dump Height
39.25ft in
Dump Ground Clearance
4.37ft in
Dump
Dump Angle
49.5degrees
Load Capacity - Struck
102yd3
Load Capacity - Heaped
137.34yd3
Rated Payload
390000lb
Lower Time
17.3sec
Raise Time
18.9sec
Specifications
Engine
Number Of Cylinders
16
Engine Make
2236
Engine Model
3516B EUI
Gross Power
1900hp
Net Power
1770.2hp
Power Measured @
1750rpm
Aspiration
Turbocharged
Displacement
4211cu in
Bore
6.7in
Stroke
7.5in
Net Power - Iso 9249
1791hp
Net Power - Sae J1349
1771hp
Net Power - 80/1269/Eec
1791hp
Gross Power - Sae J1995
1900hp
Engine Model
Cat 3516B EUI
Operational
Fuel Capacity
851gal
Cooling System Fluid Capacity
175gal
Engine Oil Capacity
20gal
Diff And Final Drive Fluid Capacity
154gal
Steering System Fluid Capacity
50gal
Brake/Hoist System Fluid Capacity
240gal
Hydraulic System Fluid Capacity
140gal
Operating Voltage
24V
Alternator Supplied Amperage
75amps
Tire Size
37.00-R57(E4)
Transmission
Transmission Type
Six-speed planetary power shift with direct injection
Number Of Gears - Forward
6
Number Of Gears - Reverse
1
Max Speed
32.7mph
Reverse
6.5 mile/h
Forward - 1
7.2mph
Forward - 2
9.8mph
Forward - 3
13.2mph
Forward - 4
17.8mph
Forward - 5
24.2mph
Forward - 6
32.7mph
Steering
Steering Standards
SAE J1511 OCT90 ISO 5010:1992
Weights
Empty Weight
299100.8lb
Loaded Weight
700000lb
Weight Distribution Front - Empty
47%
Weight Distribution Rear - Empty
53%
Weight Distribution Front - Loaded
33%
Weight Distribution Rear - Loaded
67%
Tires
Standard Tires
37.00-R57 (E4)
Brakes
Brake Surface - Front
12662in2
Brake Surface - Rear
18024in2
Standards
SAE J1473 OCT90 ISO 3450:1996
Body Hoists
Pump Flow - High Idle
193 gal/min
Relief Valve Setting - Raise
2500 psi
Body Raise Time - High Idle
18.9 s
Body Lower Time - Float
17.3 s
Body Power Down - High Idle
15.6 s
Final Drives
Planetary Ratio
10.83:1
Differential Ratio
2.35:1
Total Reduction Ratio
25.46:1
Operating Specifications
Top Speed - Loaded
32.7mph
Steer Angle
36degrees
Body Capacity - Sae 2:1
137yd3
Turning Diameter - Front
90.2ft in
Nominal Payload Capacity
390000lb
Turning Circle - Clearance Diameter
99.2ft in
Service Refill Capacities
Cooling System
175gal
Differential - Final Drives
154gal
Steering Tank
34gal
Steering System - Including Tank
50gal
Brake Hoist System - Includes Tank
240gal
Crankcase
77gal
Brake/Hoist Hydraulic Tank
140gal
Torque Converter/Transmission System - Including Sump
20gal
Fuel Tank - Standard
851gal
Torque Converter - Transmission Sump
59gal
Weight Distributions - Approximate
Front Axle - Empty
47 %
Front Axle - Loaded
33 %
Rear Axle - Empty
53 %
Rear Axle - Loaded
67 %
Weights - Approximate
Chassis Weight
218300lb
Gross Machine Operating Weight
700000lb
Body Weight Range
26 800-29 950 kg (59,000-71,500 lb)
Capacity - Dual Slope - 100% Fill Factor
Struck
96yd3
Heaped (Sae 2:1)
137yd3
Capacity - Flat Floor - 100% Fill Factor
Struck
102yd3
Heaped (Sae 2:1)
158yd3
Suspension
Effective Cylinder Stroke - Front
4in
Effective Cylinder Stroke - Rear
3.5in
Approximate Weights - Dual Slope
Body
59625lb
Chassis
225500lb
Gross Weight - Empty
310525lb
Full Liner
20840lb
Tail Extension
1700lb
Side Boards
2860lb
Approximate Weights - Flat Floor
Body
66200lb
Chassis
225400lb
Gross Weight - Empty
299100lb
Grid Liner
3300lb
Rear - Third Liner
4200lb
