Caterpillar 789C Off-Highway Truck Specs

Category: Off-Highway Trucks ➔
Manufacturer: Caterpillar ➔
Model: 789C ➔

The Caterpillar 789C Off-Highway Truck is a powerhouse designed for heavy-duty hauling in mining and construction operations. With a gross weight of 310,525 lbs and a capacity of up to 102 cubic yards, this rigid-articulated truck boasts a robust Cat 3516B engine delivering 1900 horsepower. Its six-speed planetary power shift transmission allows for smooth operation, while its impressive dump height of 39.3 feet and top speed of 32.7 mph enable efficient material transport. Equipped with advanced features and high-end components, the 789C is a reliable and efficient workhorse for tackling challenging terrains and demanding tasks.

Approximate Weights - Dual Slope

Caterpillar 789C Off-Highway Truck Approximate Weights - Dual Slope specifications
Gross Weight - Empty	310,525.00 lbs (140,851.95 kg)

Approximate Weights - Flat Floor

Caterpillar 789C Off-Highway Truck Approximate Weights - Flat Floor specifications
Body	66,200.00 lbs (30,027.85 kg)
Chassis	225,400.00 lbs (102,239.85 kg)

Articulating/Rigid

Caterpillar 789C Off-Highway Truck Articulating/Rigid specifications
Articulating/Rigid	Rigid

Body Hoists

Caterpillar 789C Off-Highway Truck Body Hoists specifications
Body Lower Time - Float	17.3 seconds
Body Raise Time - High Idle	18.9 seconds
Pump Flow - High Idle	193.00 gpm (730.51 lpm)
Relief Valve Setting - Lower	96 psi
Relief Valve Setting - Raise	2500 psi

Capacity - Dual Slope - 100% Fill Factor

Caterpillar 789C Off-Highway Truck Capacity - Dual Slope - 100% Fill Factor specifications
Heaped 2:1 (SAE)	102.00 cu yd (77.98 cu m)
Struck	96.00 cu yd (73.39 cu m)

Capacity - Flat Floor - 100% Fill Factor

Caterpillar 789C Off-Highway Truck Capacity - Flat Floor - 100% Fill Factor specifications
Struck	102.00 cu yd (77.98 cu m)

Dimensions

Caterpillar 789C Off-Highway Truck Dimensions specifications
Dump Ground Clearance	4.40 ft (1.34 m)
Dump Height	39.30 ft (11.98 m)
Ground Clearance	3.90 ft (1.19 m)
Overall Height	20.30 ft (6.19 m)
Overall Length	40.00 ft (12.19 m)
Overall Width	25.20 ft (7.68 m)
Wheelbase	18.70 ft (5.70 m)

DRIVE SYSTEM

Caterpillar 789C Off-Highway Truck DRIVE SYSTEM specifications
Drive Config	4x2

Dump

Caterpillar 789C Off-Highway Truck Dump specifications
Dump Angle	49.5 degrees
Load Capacity - heaped	137.40 cu yd (105.05 cu m)
Load Capacity - Struck	102.00 cu yd (77.98 cu m)
Lower Time	17.3 seconds
Raise Time	18.9 seconds

Engine

Caterpillar 789C Off-Highway Truck Engine specifications
Bore	6.70 in (17.02 cm)
Displacement	4,211.00 cu in (69,006.08 cu cm)
Engine Model	Cat 3516B EUI
Gross Power	1,900.00 hp (1,416.85 kw)
Gross Power - SAE J1995	1,900.00 hp (1,416.85 kw)
Make	Cat
Net Power	1,770.20 hp (1,320.06 kw)
Net Power - 80/1269/EEC	1,791.00 hp (1,335.57 kw)
Net Power - ISO 9249	1,791.00 hp (1,335.57 kw)
Net Power - SAE J1349	1,771.00 hp (1,320.66 kw)
Number of Cylinders	16
Power Measured @	1750 rpm
Rated Engine Speed	140 rpm
Stroke	7.50 in (19.05 cm)
Torque Measured @	Turbocharged rpm
Torque Rise	15.6

Final Drives

Caterpillar 789C Off-Highway Truck Final Drives specifications
Planetary Ratio	10.83:1

Operating Specifications

Caterpillar 789C Off-Highway Truck Operating Specifications specifications
Body Capacity - SAE 2:1	137.00 cu yd (104.74 cu m)
Brake/Hoist System Fluid Capacity	240.00 gal (908.40 l)
Cooling System Fluid Capacity	175.00 gal (662.38 l)
Diff and Final Drive Fluid Capacity	154.00 gal (582.89 l)
Engine Oil Capacity	20.00 gal (75.70 l)
Fuel Capacity	851.00 gal (3,221.04 l)
Hydraulic System Fluid Capacity	140.00 gal (529.90 l)
Operating Voltage	24 volts
Steering System Fluid Capacity	50.00 gal (189.25 l)
Tire Size	37.00-R57(E4)
Top Speed - Loaded	32.70 mph (52.63 kph)
Turning Diameter - Front	99.20 ft (30.24 m)

ROPS

Caterpillar 789C Off-Highway Truck ROPS specifications
ROPS/FOPS Standards	59625

Service Refill Capacities

Caterpillar 789C Off-Highway Truck Service Refill Capacities specifications
Brake / Hoist / Fan Hydraulic Tank	137.00 gal (518.55 l)
Brake Hoist System - Includes Tank	240.00 gal (908.40 l)
Cooling System	175.00 gal (662.38 l)
Fuel Tank - Optional	26,800.00-29,950.00 kg (59,083.81-66,028.37 lbs)
Fuel Tank - Standard	851.00 gal (3,221.04 l)
Steering System - Including Tank	50.00 gal (189.25 l)
Steering Tank	34.00 gal (128.69 l)

Suspension

Caterpillar 789C Off-Highway Truck Suspension specifications
Effective Cylinder Stroke - Rear	3.50 in (8.89 cm)
Rear axle - Oscillation	4 degrees

Transmission

Caterpillar 789C Off-Highway Truck Transmission specifications
Forward - 1	7.20 mph (11.59 kph)
Forward - 2	9.80 mph (15.77 kph)
Forward - 3	13.20 mph (21.24 kph)
Forward - 4	17.80 mph (28.65 kph)
Forward - 5	24.20 mph (38.95 kph)
Forward - 6	32.70 mph (52.63 kph)
Max Speed	32.70 mph (52.63 kph)
Number of Gears - Forward	6
Number of Gears - Reverse	1
Reverse	6.50 mph (10.46 kph)
Transmission Type	Six-speed planetary power shift with direct injection

Weights

Caterpillar 789C Off-Highway Truck Weights specifications
Body Weight	225,500.00 lbs (102,285.21 kg)
Body Weight Range	26 800-29 950 kg (59000-71500 lb)
Empty Weight	299,100.80 lbs (135,670.01 kg)
Front Axle - Empty	47%
Front Axle - Loaded	33%
Loaded Weight	700,000.00 lbs (317,515.05 kg)
Operating Weight - Loaded	SAE J1511 OCT90 ISO 5010:1992 lbs (0.00 kg)
Rear Axle - Empty	53%
Rear Axle - Loaded	67%
Weight Distribution Front - empty	47%
Weight Distribution Front - loaded	33%
Weight Distribution Rear - empty	53%
Weight Distribution Rear - loaded	67%

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