777G Off-Highway Truck

Caterpillar offers partial machines and systems, working with Cat dealers and Original Equipment Manufacturers (OEMs) to provide specialty machines for specific applications. Bare chassis trucks (WTR models) can be ordered with or without hoist cylinders and most product options are identical to the dump truck models. Typically, these models come equipped with the higher Tractor ROPS certification ratings needed for specialty machines including water trucks, tow trucks and fuel and lube trucks. You’ll find these partial machine configurations are used in construction, demolition, waste, material handling, and mining industries and allow you to purchase complete solutions from your Cat dealer, using Cat equipment every step of the way. The Cat Water Delivery System (WDS) is available as an optional attachment with the 777G WTR and 785D WTR Off-Highway Truck Bare Chassis and includes factory installed controls in the cab, a hydraulic pump and motor, a water pump and stainless steel spray heads. Whether your goal is dust control or haul road maintenance, the Cat WDS is designed to put water to the ground in a controlled, intelligent way. The simple to operate automated system allows you to concentrate on more important safety issues like traffic, personnel and road conditions. You’ll also find that the Cat WDS not only improves safety, but also reduces truck maintenance costs, conserves water and provides significant fuel savings to hlep your bottom line.

Request a Quote
Nominal Payload Class (100%)
98.4 tons
Engine Model
Cat® C32 ACERT™
Top Speed - Loaded
41.7 mph
Gross Power - SAE J1995
1025.0 hp

Product Specs

Operating Specifications

Nominal Payload Class (100%)
98.4tons
Top Speed - Loaded
41.7mph
Nominal Payload (100%)
98.4tons
Nominal Water Tank Capacity
20000gal

Engine

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

Transmission

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

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
6331.0in2
Brake Surface Area - Rear
15828.0in2

Service Refill Capacities

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

Hoists

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

Suspension

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

Weights - Approximate

Target Gross Machine Weight
363000.0lb

Steering

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

Tires

Standard Tire
27.00R49 (E4)

ROPS

ROPS/FOPS Standards
Standards
Tractor ROPS
133082lbs

Sound

Sound Standards
Standards

Weights

LRC Bare Chassis Weight with Hoist
114067lb
LRC Gross Vehicle Weight (Target) with Hoist
363000lb
LRC Bare Chassis Weight without Hoist
111505lb
LRC Gross Vehicle Weight (Target) without Hoist
363000lb
Tier 4 Bare Chassis Weight with Hoist
115218lb
Tier 4 Gross Vehicle Weight (Target) with Hoist
363000lb
Tier 4 Bare Chassis Weight without Hoist
112656lb
Tier 4 Gross Vehicle Weight (Target) without Hoist
363000lb

Benefits & Features

Tractor ROPS Rating

Cat® Off-Highway Truck Bare Chassis ROPS is certified to ISO 3471 Tractor criteria, to provide a higher level of protection for towing applications.

Water Truck Applications

Cat® Off-Highway Truck Bare Chassis are rugged and reliable platforms for water truck applications in both mining and construction projects. Using an off-highway truck bare chassis provides a solution that is ideal for dust suppression, road construction, fire protection, and other applications. Caterpillar works with OEMs worldwide to match the appropriate bare chassis machine to the water truck application, all through your local Cat dealer, to provide the best solution for your business.

Service Truck Applications

Cat® Off-Highway Truck Bare Chassis are rugged and reliable platforms for service truck applications in both mining and construction projects. Using an off-highway truck bare chassis provides a solution that is ideal for delivering fuel and preventive maintenance lubrication to your site's machine fleet. Caterpillar works with OEMs worldwide to match the appropriate bare chassis machine to the service truck application, all through your local Cat dealer, to provide the best solution for your business.

Tow Applications

Cat® Off-Highway Truck Bare Chassis are rugged and reliable platforms for tow applications. Using an off-highway truck bare chassis provides a solution that is ideal for equipment trailers and bottom dump trailers. Caterpillar works with OEMs worldwide to match the appropriate bare chassis machine to the tow application, all through your local Cat dealer, to provide the best solution for your business.

Standard/Optional Features

Standard Equipment:

  • For bare chassis standard and optional equipment, please reference the 777G Off-Highway Truck. For more information on 777G WTR Bare Chassis options, please contact Caterpillar OEM Solutions at oemsolutions@cat.com.

Optional Equipment: