Big EOFY Savings on Cat Compact machines until 30 June 2026. T&Cs apply. View Promotion

Big EOFY Savings on Cat Compact machines until 30 June 2026. T&Cs apply. View Promotion

789 (04) Water Truck

Water Trucks
Longer description goes here
Engine Model
Cat® 3516C HD
Gross Power - SAE J1995:2014
2100 hp/1566 kW
Net Power - SAE J1349:2011
1969 hp/1468 kW
Emissions
Fuel Optimized

Key Features

Specifications

Metric | Imperial
Engine Expand Collapse
Engine Model
Cat® 3516C HD
Gross Power - SAE J1995:2014
2100 hp 1566 kW
Net Power - SAE J1349:2011
1969 hp 1468 kW
Emissions
Fuel Optimized
Bore
6.7 in 170 mm
Stroke
8.5 in 215 mm
Displacement
4766 in³ 78.1 l
Note (1)
Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator.
Maximum water flow
1800 gal(US)/min 6814 L/min
Water per spray head (minimum)
35 gal(US)/min 132.5 L/min
Water per spray head (maximum)
600 gal(US)/min 2270 L/min
Spray head opening range (minimum)
0.04 in 1 mm
Spray head opening range (maximum)
0.75 in 19 mm
Maximum size debris flushed through spray head
0.75 in 19 mm
Spray system hydraulic tank capacity
7.25 gal (US) 27.5 l
Maximum number of rear spray heads
5
Minimum number of rear spray heads (recommended 3)
2
Minimum number of front/side spray heads
2
Maximum number of front/side spray heads
Maximum water from cannon (idle)
600 gal(US)/min 2271 L/min
Maximum water from cannon (high idle)
1650 gal(US)/min 6246 L/min
Maximum cannon spray distance
200 ft 61 m
Type
Wet water pump/hydraulic motor coupling
Note
Operator selectable coverage: 0.2 - 0.8 L/m² (4 kph - 40 kph) / 0.05 - 0.2 gal/ft² (3 mph - 25 mph). Coverage rates above 0.6 L/m² may not be available at higher speeds depending on head count and configuration.
Note (1)
Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator.
Note (2)
The Auto Mode setting controls water coverage and automatically adjusts to the number of spray heads being used — independent of ground speed. This is an exclusive feature designed into the Cat WDS software to help water more efficiently. Water flow is continually adjusted during operation to conserve water and achieve desired coverage and flow rate.
Note (3)
Alternatively, manual mode allows the operator to set a water flow rate that is constant regardless of ground speed. This mode is not recommended for daily operation and will reduce watering efficiency and may increase fuel usage.
Note (4)
Spray heads on competitive water distribution systems require tools and maintenance to change flow and spray pattern. Caterpillar is the only company to have variable active spray heads to regulate water spray.
Note (5)
Cannon performance depends on nozzle orifice and pipe size.
Water Tank Capacity
up to 165 000 L (43,588 gal)
Note
Operator selectable coverage: 0.2 - 0.8 L/m² (4 kph - 40 kph) / 0.05 - 0.2 gal/ft² (3 mph - 25 mph). Coverage rates above 0.6 L/m² may not be available at higher speeds depending on head count and configuration.
Machine Weight (with water tank full)
480,655 lb - 520,237 lb / 218 022 kg - 235 976 kg
Empty Machine Operating Weight (without water / with fuel)
241,647 lb - 251,098 lb / 109 610 kg - 113 896 kg
Water Tank - Max Empty Weight (no WDS)
57,320 lb - 66,769 lb / 26 000 kg - 30 286 kg
Note (1)
Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator.
Note (2)
The Auto Mode setting controls water coverage and automatically adjusts to the number of spray heads being used — independent of ground speed. This is an exclusive feature designed into the Cat WDS software to help water more efficiently. Water flow is continually adjusted during operation to conserve water and achieve desired coverage and flow rate.
Note (3)
Alternatively, manual mode allows the operator to set a water flow rate that is constant regardless of ground speed. This mode is not recommended for daily operation and will reduce watering efficiency and may increase fuel usage.
Note
Operator selectable coverage: 0.2 - 0.8 L/m² (4 kph - 40 kph) / 0.05 - 0.2 gal/ft² (3 mph - 25 mph). Coverage rates above 0.6 L/m² may not be available at higher speeds depending on head count and configuration.
Note (2)
The Auto Mode setting controls water coverage and automatically adjusts to the number of spray heads being used — independent of ground speed. This is an exclusive feature designed into the Cat WDS software to help water more efficiently. Water flow is continually adjusted during operation to conserve water and achieve desired coverage and flow rate.
Target Gross Machine Weight
715000 lb 324319 kg
Chassis Weight
228619 lb 103700 kg
Forward - 1
7.8 mile/h 12.6 km/h
Forward - 2
10.6 mile/h 17.1 km/h
Forward - 3
14.4 mile/h 23.1 km/h
Forward - 4
19.4 mile/h 31.2 km/h
Forward - 5
26.3 mile/h 42.3 km/h
Forward - 6
35.5 mile/h 57.2 km/h
Reverse
7.1 mile/h 11.8 km/h
Note
Operator selectable coverage: 0.2 - 0.8 L/m² (4 kph - 40 kph) / 0.05 - 0.2 gal/ft² (3 mph - 25 mph). Coverage rates above 0.6 L/m² may not be available at higher speeds depending on head count and configuration.
Differential Ratio
2.35:1
Planetary Ratio
10.83:1
Total Reduction Ratio
25.46:1
Brake Surface - Front
12662 in² 81693 cm²
Brake Surface - Rear
18023 in² 116283 cm²
Brake Standards
ISO 3450:2011
Pump Flow - High Idle
184 gpm 699 L/min
Relief Valve Setting - Raise
2750 psi 18950 kPa
Body Raise Time - High Idle
18.9 s 18.9 s
Body Lower Time - Float
17.3 s 17.3 s
Front Axle - Empty
50 % 50 %
Front Axle - Loaded
50 % 50 %
Rear Axle - Empty
33 % 33 %
Rear Axle - Loaded
67 % 67 %
Rear axle - Oscillation
5.4 ° 5.4 °
Steering Standards
ISO 5010:2019
Steer Angle
36 ° 36 °
Turning Diameter - Front
99.5 ft 30.34 m
Standard Tire
37.00-R57
Note (1)
Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator.
Note (2)
The Auto Mode setting controls water coverage and automatically adjusts to the number of spray heads being used — independent of ground speed. This is an exclusive feature designed into the Cat WDS software to help water more efficiently. Water flow is continually adjusted during operation to conserve water and achieve desired coverage and flow rate.
Fuel Tank
550 gal (US) 2082 l
Cooling System
192 gal (US) 725 l
Crankcase
77 gal (US) 291 l
Differential - Final Drives
192 gal (US) 728 l
Steering System - Including Tank
50 gal (US) 189 l
Brake Hoist System - Includes Tank
241 gal (US) 909 l
Air Conditioning
23545 Btu/lb 6.9 kW
Heater / Defroster
34462 Btu 10.1 kW
ROPS Standards (1)
The ROPS (Rollover Protective Structure) for the cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria.
FOPS Standards
The FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II FOPS criteria.
Note (1)
Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator.
Note (3)
Alternatively, manual mode allows the operator to set a water flow rate that is constant regardless of ground speed. This mode is not recommended for daily operation and will reduce watering efficiency and may increase fuel usage.

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