The G Series represents a new era for Cat’s Off-Highway Trucks and the 773G provides our customers with a quality operating environment that enhances productivity and provides significant savings in fuel consumption, too. Ergonomically designed with an operator’s comfort in mind, the 773G has an updated cab with new comforts as well as controls conveniently placed within reach of the operator’s hands. Built with a Cat C27 diesel engine, this 60-ton payload uses increased torque delivering 5% additional horsepower. An ideal pass match for the 773G Off-Highway Truck is Cat’s 988K Wheel Loader, 990K Wheel Loader, or the 390F Hydraulic Excavator. Simply put, the 773G will make a positive difference in haul performance all day, every day for today and tomorrow’s work.
Power rating applies at 2,000 rpm when tested under the specified condition for the specified standard.
No engine derating required up to 3048 m (10,000 ft) for Tier 4/Stage V.
Ratings based on SAE J1995 standard air conditions of 25° C (77° F) and 100 kPa (29.61 Hg) barometer. Power based on fuel having API gravity of 35 at 16° C (60° F) and an LHV of 42 780 kJ/kg (18,390 BTU/lb) when engine used at 30° C (86° F).
Service Refill Capacities
Differential - Final Drives
Steering System - Including Tank
Brake Hoist System
Brake/Hoist Hydraulic Tank
Torque Converter - Transmission System - HRC
Torque Converter - Transmission System - LRC
Body Capacity - SAE 2:1
Body Capacity - SAE 2:1
Nominal Payload Class (100%)
Top Speed - Loaded
Maximum Working Payload (110%)
Not to Exceed Payload (120%)*
* Refer to the Caterpillar 10/10/20 Payload Policy for maximum gross machine weight limitations.
Capacity with Dual Slope body – no liner.
Maximum Allowable Payload (120%)*
Falling Object Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria.
Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria.
Sound Standards (2)
The exterior sound pressure level for the standard machine measured at a distance of 15 m (49 ft) according to the test procedures specified in SAE J88:2008, mid‑gear moving operation is 86 dB(A).
Sound Standards (1)
The operator Equivalent Sound Pressure Level (Leq) is 76 dB(A) when SAE J1166 FEB2008 is used to measure the value for an enclosed cab. This is a work cycle sound exposure level. The cab was properly installed and maintained. The test was conducted with t
Sound Standards (3)
Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in a noisy environment.
Weights - Approximate
Maximum Gross Vehicle Weight
Capacity - Dual Slope - 100% Fill Factor
Heaped 2:1 (SAE)
Capacity - Flat Floor - 100% Fill Factor
Heaped 2:1 (SAE)
Weight Distributions - Approximate
Front Axle - Empty
Front Axle - Loaded
Rear Axle - Empty
Rear Axle - Loaded
Forward - 1
Forward - 2
Forward - 3
Forward - 4
Forward - 5
Forward - 6
Forward - 7
Maximum travel speeds with standard 24.00R35 (E4) tires.
Total Reduction Ratio
Brake Surface - Front
Brake Surface - Rear
Productive capabilities of the 773G truck are such that, under certain job conditions, TKPH (TMPH) capabilities of standard or optional tires could be exceeded and, therefore, limit production.
Caterpillar recommends the customer evaluate all job conditions and consult the tire manufacturer for proper tire selection.
Pump Flow - High Idle
Relief Valve Setting - Raise
Relief Valve Setting - Lower
Body Raise Time - High Idle
Body Lower Time - Float
Body Power Down - High Idle
Rear axle - Oscillation
Empty Loaded Cylinder Stroke Front
Empty Loaded Cylinder Stroke Rear
Turning Diameter - Front
SAE J1511 FEB94 ISO 5010:1992
Turning Circle - Clearance Diameter
Standard and optional equipment may vary. Consult your Cat dealer for details.
Cat C27 Tier 4/Stage V compliant diesel engine: – Air cleaner with precleaner (2) – Air-To-Air Aftercooler (ATAAC) – Electric start – Engine idle shutdown – Ether starting aid – Exhaust muffler – NGMR radiator For Tier 4 regions only (U.S./Canada): – Aftertreatment system