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777G Off-Highway Truck

777G Off-Highway Truck

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G Series represents a new era for this size class from Caterpillar. With your input, we have designed and manufactured a truck that is reliable, economical and offers comfort, confidence and control for your operators. Your long-term success is our goal; with G Series trucks, we’re on the right road.

Engine

Engine Model
Cat® C32 ACERT™
Gross Power - SAE J1995
1025.0 hp
Net Power - SAE J1349
916.0 hp
Net Power - 80/1269/EEC
916.0 hp
Net Power - ISO 9249
916.0 hp
Bore
5.7 in
Stroke
6.4 in
Displacement
1959.0 in3
Cylinders
12
Engine Power - ISO 14396
1008.0 hp
Engine Speed
1800.0 RPM
Net Torque
3899.0 ft-lb
Peak Torque Speed
1200.0 RPM

Weights - Approximate

Target Gross Machine Weight
363000.0 lb

Operating Specifications

Nominal Payload Class (100%)
98.4 tons
Top Speed - Loaded
41.7 mph
Body Capacity - SAE 2:1
83.8 yd3
Maximum Payload (110%)
108.2 tons
Nominal Payload (100%)
98.4 tons
Not to Exceed Payload (120%)*
118.1 tons

Transmission

Forward 1
6.8 mph
Forward 2
9.2 mph
Forward 3
12.5 mph
Forward 4
16.9 mph
Forward 5
22.9 mph
Forward 6
30.7 mph
Forward 7
41.7 mph
Reverse
7.7 mph

Final Drives

Differential Ratio
2.736:1
Planetary Ratio
7.0:1
Total Reduction Ratio
19.1576:1

Brakes

Brake Standards
ISO 3450:1996
Brake Surface Area - Front
6331.0 in2
Brake Surface Area - Rear
15828.0 in2

Body Hoists

Pump Flow - High Idle
120.9 gal/min
Relief Valve Setting - Raise
2750.0 psi
Relief Valve Setting - Lower
500.0 psi
Body Raise Time - High Idle
15.0 Seconds
Body Lower Time - Float
13.0 Seconds
Body Lower Time - High Idle
13.0 Seconds

Capacity - Dual Slope - 100% Fill Factor

Struck
54.8 yd3
Heaped 2:1 (SAE)
78.8 yd3

Weight Distributions - Approximate

Front Axle - Empty
46.0 %
Front Axle - Loaded
33.0 %
Rear Axle - Empty
54.0 %
Rear Axle - Loaded
67.0 %

Suspension

Rear Axle Oscillation
5.4 Degrees
Empty Loaded Cylinder Stroke Front
2.9 in
Empty Loaded Cylinder Stroke Rear
2.5 in

Service Refill Capacities

Fuel Tank
300.0 gal
Cooling System
63.4 gal
Steering System (Includes Tank)
14.1 gal
Brake Hoist System
85.0 gal
Brake Hoist System (Includes Tank)
117.0 gal
Crankcase
28.7 gal
Differentials
59.9 gal
Final Drives (each)
20.0 gal
Fuel Tank
350.0 gal
Torque Converter/Transmission System
36.5 gal

Tires

Standard Tire
27.00R49 (E4)

ROPS

ROPS/FOPS Standards
Standards

Sound

Sound Standards
Standards

Steering

Turning Diameter - Front
83.0 ft
Steering Standards
SAE J1511 FEB94 ISO 5010:1992
Steer Angle
30.5 Degrees
Turning Circle Clearance Diameter
93.0 ft

Capacity - X Body - 100% Fill Factor

Heaped 2:1 (SAE)
83.8 yd3
Struck
56.3 yd3

Capacity - Coal Bodies - 100% Fill Factor

SAE 2:1 for use with material densities less than 950 kg/m3 (1,600 lb/yd3)
165.0 yd3
SAE 2:1 for use with material densities of 1040-1160 kg/m3 (1,750-1,950 lb/yd3)
139.0 yd3
SAE 2:1 for use with material densities of 1160 kg/m3 (1,950 lb/yd3)
116.0 yd3
SAE 2:1 for use with material densities of 950-1040 kg/m3 (1,600-1,750 lb/yd3)
144.0 yd3
  • Body heat
  • Body liners
  • Body side boards
  • Cab precleaner
  • Cat Engine Brake
  • Clustered grease fittings
  • Cold weather packages
  • Extended Life Brakes
  • Fluid fill service center
  • HID lights
  • Mirrors, convex
  • Mirrors, heated
  • Spare rim
  • Visibility package (meets ISO 5006 requirements)
  • Wheel chocks
  • Work Area Vision System (WAVS)