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G Series represents a new era for the 773, and with your long-term success as our goal, we've developed this truck to be more productive and economical. It offers your operators the confidence, comfort and control to run at peak efficiency, and it can feed your crushers and haul material at a lower cost per ton. When you also consider its performance and fuel efficiency, the 773G is the right truck for our generation.

Cat Specs
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Operating Specifications

Nominal Payload Class (100%)
61 ton (US)
Top Speed - Loaded
41.6 mile/h
Body Capacity - SAE 2:1
46.75 yd²

Engine

Rated Engine Speed
1800 r/min
Net Power - 80/1269/EEC
724 HP
Bore
5.4 in
Stroke
6 in
Displacement
1648 in³
Net Power - SAE J1349
717 HP
Engine Power - ISO 14396
762 HP
Gross Power - SAE J1995
775 HP
Net Power - ISO 9249
724 HP
Engine Model
Cat® C27 ACERT™

Transmission

Forward - 1
6.6 mile/h
Forward - 2
9.3 mile/h
Forward - 5
22.8 mile/h
Forward - 6
30.7 mile/h
Forward - 7
41.6 mile/h
Reverse
8.7 mile/h
Forward - 3
12.6 mile/h
Forward - 4
16.8 mile/h

Final Drives

Planetary Ratio
4.80:1
Differential Ratio
3.64:1
Total Reduction Ratio
17.49:1

Brakes

Brake Surface - Front
257 in²
Brake Surface - Rear
9497 in²
Brake Standards
ISO 3450:1996

Body Hoists

Pump Flow - High Idle
118 gal/min
Relief Valve Setting - Raise
2502 psi
Relief Valve Setting - Lower
500 psi
Body Raise Time - High Idle
10 s
Body Lower Time - Float
14 s
Body Power Down - High Idle
14 s

Capacity - Dual Slope - 100% Fill Factor

Struck
35.13 yd²
Heaped 2:1 (SAE)
46.76 yd²

Capacity - Flat Floor - 100% Fill Factor

Struck
34.33 yd²
Heaped 2:1 (SAE)
46.41 yd²

Weight Distributions - Approximate

Front Axle - Empty
53 %
Front Axle - Loaded
35 %
Rear Axle - Empty
47 %
Rear Axle - Loaded
65 %

Suspension

Empty Loaded Cylinder Stroke Front
9.2 in
Empty Loaded Cylinder Stroke Rear
5.8 in
Rear axle - Oscillation
8.1 °

Service Refill Capacities

Crankcase
24 gal (US)
Differential - Final Drives
38 gal (US)
Steering Tank
9.5 gal (US)
Cooling System
45 gal (US)
Steering System - Including Tank
14 gal (US)
Brake/Hoist Hydraulic Tank
46.5 gal (US)
Brake Hoist System
85 gal (US)
Fuel Tank
210 gal (US)

Steering

Steering Standards
SAE J1511 FEB94 ISO 5010:1992
Steer Angle
31 °
Turning Diameter - Front
77.1 ft
Turning Circle - Clearance Diameter
85.6 ft

Tires

Standard Tire
24.00R35 (E4)