Caterpillar 777 Water Truck Specs

Category: Off-Highway Water Trucks ➔
Manufacturer: Caterpillar ➔
Model: 777 ➔

Body Hoists

Caterpillar 777 Water Truck Body Hoists specifications
Body Lower Time - Float	13 s - Starting 2026
Body Lower Time - High Idle	13 s - Starting 2026
Body Raise Time - High Idle	15 s - Starting 2026
Pump Flow - High Idle	6,331.00 gpm (23,962.84 lpm) - Starting 2026
Relief Valve Setting - Lower	500 psi - Starting 2026
Relief Valve Setting - Raise	2750 psi - Starting 2026

Braking System

Caterpillar 777 Water Truck Braking System specifications
Brake Standards	ISO 3450:2011 - Starting 2026
Brake Surface - Front	6331 in² - Starting 2026
Brake Surface - Rear	15828 in² - Starting 2026

Cab

Caterpillar 777 Water Truck Cab specifications
Air Conditioning	18390 Btu/lb - Starting 2026
FOPS Standards	Falling Objects Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria. - Starting 2026
Heater / Defroster	43930 Btu - Starting 2026
ROPS Standards (1)	Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria. - Starting 2026

Cat Water Delivery System (Wds)

Caterpillar 777 Water Truck Cat Water Delivery System (Wds) specifications
Maximum cannon spray distance	200.00 ft (60.96 m) - Starting 2026
Maximum number of front/side spray heads	0 - Starting 2026
Maximum number of rear spray heads	5 - Starting 2026
Maximum size debris flushed through spray head	0.75 in (1.90 cm) - Starting 2026
Maximum water flow	1800 gal(US)/min - Starting 2026
Maximum water from cannon (high idle)	1650 gal(US)/min - Starting 2026
Maximum water from cannon (idle)	600 gal(US)/min - Starting 2026
Minimum number of front/side spray heads	2 - Starting 2026
Minimum number of rear spray heads (recommended 3)	2 - Starting 2026
Spray head opening range (maximum)	0.75 in (1.90 cm) - Starting 2026
Spray head opening range (minimum)	0.04 in (0.10 cm) - Starting 2026
Spray system hydraulic tank capacity	7.25 gal (27.44 l) - Starting 2026
Type	Wet water pump/hydraulic motor coupling - Starting 2026
Water per spray head (maximum)	600 gal(US)/min - Starting 2026
Water per spray head (minimum)	35 gal(US)/min - Starting 2026

Engine

Caterpillar 777 Water Truck Engine specifications
Bore	5.70 in (14.48 cm) - Starting 2026
Cylinders	12 - Starting 2026
Displacement	1,959.00 cu in (32,102.33 cu cm) - Starting 2026
Emissions (1)	Available as U.S. EPA Tier 4 Final/EU Stage V equivalent, Tier 3/Stage IIIA equivalent, or Tier 2/Stage II equivalent emission standards. - Starting 2026
Emissions (2)	Meets China Nonroad Stage III emission standards equivalent to Tier 3 or Tier 2. - Starting 2026
Engine Model	Cat® C32B - Starting 2026
Engine Speed	1800 r/min - Starting 2026
Gross Power - SAE J1995:2014	1,025.00 hp (764.35 kw) - Starting 2026
Net Power - SAE J1349:2011	916.00 hp (683.07 kw) - Starting 2026
Stroke	6.40 in (16.26 cm) - Starting 2026

Final Drives

Caterpillar 777 Water Truck Final Drives specifications
Differential Ratio	2.736:1 - Starting 2026
Planetary Ratio	7.0:1 - Starting 2026
Total Reduction Ratio	19.1576:1 - Starting 2026

Operating Specifications

Caterpillar 777 Water Truck Operating Specifications specifications
Top Speed - Loaded	41.70 mph (67.11 kph) - Starting 2026

Service Refill Capacities

Caterpillar 777 Water Truck Service Refill Capacities specifications
Brake Hoist System	85.00 gal (321.73 l) - Starting 2026
Cooling System	63.40 gal (239.97 l) - Starting 2026
Crankcase	28.70 gal (108.63 l) - Starting 2026
Differentials	59.90 gal (226.72 l) - Starting 2026
Final Drive - Each	20.00 gal (75.70 l) - Starting 2026
Fuel Tank (1)	300.00 gal (1,135.50 l) - Starting 2026
Fuel Tank (2)	350.00 gal (1,324.75 l) - Starting 2026
Steering System - Including Tank	14.10 gal (53.37 l) - Starting 2026
Torque Converter - Transmission System	36.50 gal (138.15 l) - Starting 2026

Steering

Caterpillar 777 Water Truck Steering specifications
Steer Angle	30.5 degrees - Starting 2026
Steering Standards	ISO 5010:2007 - Starting 2026
Turning Circle - Clearance Diameter	93.00 ft (28.35 m) - Starting 2026
Turning Diameter - Front	83.00 ft (25.30 m) - Starting 2026

Suspension

Caterpillar 777 Water Truck Suspension specifications
Empty Loaded Cylinder Stroke Front	2.90 in (7.37 cm) - Starting 2026
Empty Loaded Cylinder Stroke Rear	2.50 in (6.35 cm) - Starting 2026
Rear axle - Oscillation	5.4 degrees - Starting 2026

Tank Configurations

Caterpillar 777 Water Truck Tank Configurations specifications
Empty Machine Operating Weight (without water / with fuel)	160,307 - 162,323 lb / 72 714 - 73 629 kg - Starting 2026
Machine Weight (with water tank full)	327,964 - 327,964 lb / 147 172 - 148 762 kg - Starting 2026
Water Tank - Max Empty Weight (no WDS)	42,983 - 44,092 lb / 19 497 - 20 000 kg - Starting 2026
Water Tank Capacity	up to 75 700 L (20,000 gal) - Starting 2026

Tires

Caterpillar 777 Water Truck Tires specifications
Standard Tire	27.00R49 (E4) - Starting 2026

Transmission

Caterpillar 777 Water Truck Transmission specifications
Forward - 1	6.60 mph (10.62 kph) - Starting 2026
Forward - 2	9.10 mph (14.64 kph) - Starting 2026
Forward - 3	11.90 mph (19.15 kph) - Starting 2026
Forward - 4	16.60 mph (26.72 kph) - Starting 2026
Forward - 5	22.50 mph (36.21 kph) - Starting 2026
Forward - 6	30.20 mph (48.60 kph) - Starting 2026
Forward - 7	40.90 mph (65.82 kph) - Starting 2026
Reverse	7.50 mph (12.07 kph) - Starting 2026

Weight Distributions - Approximate

Caterpillar 777 Water Truck Weight Distributions - Approximate specifications
Front Axle - Empty	46 % - Starting 2026
Front Axle - Loaded	33 % - Starting 2026
Rear Axle - Empty	54 % - Starting 2026
Rear Axle - Loaded	67 % - Starting 2026

Weights - Approximate

Caterpillar 777 Water Truck Weights - Approximate specifications
Chassis Weight	115,217.00 lbs (52,261.62 kg) - Starting 2026
Target Gross Machine Weight	363,000.00 lbs (164,654.23 kg) - Starting 2026

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