Introducing a fully integrated water solutions to the market – combining a truck, tank, and water delivery system – connected with scalable levels of technology to help you solve overwatering and underwatering issues with a focus on sustainable operations.

Water Trucks 789 (04) Water Truck

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Key Specs

Engine Model: Cat® 3516C HD; Cat® 3516C HD

Gross Power - SAE J1995:2014: 2100 hp; 1566 kW

Water Tank Capacity: up to 165 000 L (43,588 gal); up to 165 000 L (43,588 gal)

789 (04) Water Truck
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Overview

Control Dust. Increase Visibility. Reduce Risk.

Cat® Water Solutions helps you efficiently reduce haul road dust to enhance safety and increase productivity at your quarry or mine. An integrated truck, tank, and water delivery system – connected with scalable levels of technology helps you solve overwatering and underwatering issues with a focus on sustainable operations. This innovative water solution is sold and supported by the local Cat dealer you know and trust.

Benefits

Enhance Safety and Productivity

Know where and when to water – lower dust levels, increase visibility, maintain haul road safety

Scalable Connectivity with Cat® MineStar™

Cloud-hosted service offering (by site or asset) with scalable levels of technology to fit your needs

Reduce Costs Sustainably and Efficiently

The Cat® Water Delivery System (WDS) provides variable water flow based on truck speed and determines appropriate flow to conserve water

Features At A Glance

ENHANCE SAFETY & PRODUCTIVITY AT YOUR MINESITE

Lower dust levels, increase visibility, maintain haul road safety — know where and when to water
With automated water delivery, the operator can remain focused on traffic and driving
When water tank is full, the auto shutoff feature prevents overfilling and results in increased component life
Monitor tank fill from inside the cab
The water delivery system features automatic start and stop, based on truck speed, which eliminates overwatering at road intersections to improve safety for all vehicles on site
Traction Control System (TCS) and Wet Disc Braking is standard on all four corners of the truck
Automatic Retarding Control (ARC) for downhill grades

MEET YOUR PRODUCTION TARGETS

Properly watered haul roads directly impact fleet cycle times, enabling you to meet production targets.
Spend less time maintaining haul roads using proper watering techniques to solve overwatering and underwatering
Prevent damage to trucks and reduce unplanned downtime with properly watered haul roads
Pump features soft startup and shuts off automatically when the tank is empty, eliminating damage and preventing the pump from running dry
The Cat 6-speed planetary power shift transmission is matched with the direct-injection 3512C engine to deliver constant power over a wide range of operating speeds and is built tough for long life between overhauls.

CONSERVE WATER. USE ONLY WHAT YOU NEED.

The Cat Water Delivery System (WDS) helps you manage water effectively and sustainability — helping you do more with less.
WDS utilizes automatic start and stop to help eliminate overwatering at road intersections.
WDS provides variable water flow based on truck speed, ensuring most efficient water placement.

LOWERING YOUR FUEL COSTS

We've designed our trucks to use less fuel, which reduces engine emissions and carbon footprint, and there is zero fuel burn during retarding.

WATER DELIVERY SYSTEM:

The water cannon operates at idle, which reduces fuel consumption during cannon operation by up to 50%.

*Results shown from Cat WDS cannon output. Testing was conducted at the Caterpillar Tucson Proving Ground with data captured from a production study. Results may vary.

CONNECT WITH CAT® MINESTAR™

Cat MineStar for water uses cloud-based connectivity through cellular and WiFi connection to collect and manage data at any job site.
We offer two levels of connectivity (Basic & Premium*) to meet any customer need using Cat MineStar.
Water Solutions data can help ensure customers are meeting regulatory requirements.
View maps and dashboards of your operation to see how much your trucks are watering, where they are located, how much fuel they are using, and more.

BASIC CONNECTIVITY: EQUIPMENT TRACKING

“I need to know where my truck is located and when it’s watering.”

Basic Connectivity* automates fundamental data collection, eliminating paper recording by the operator.

Near-real-time and historical reporting.
Truck location and utilization data: routes, starts and stops.
Fuel and water level.
Whether or not the truck is spraying water.
Water Delivery System utilization (auto vs. manual mode).

*Based on equipment connectivity via WiFi or cellular data. Basic Connectivity Package comes standard with a 6-month complimentary service-based offering.

PREMIUM CONNECTIVITY: EQUIPMENT TRACKING + PRODUCTION RECORDING

“I need to understand fuel utilization, water cycle duration, and how much water the truck is using.”

Premium Connectivity* offers a comprehensive reporting package with data and detailed reports o help mine managers and operators improve watering techniques and efficiency.

Water usage by truck/fill station.
Volume of water output over time and area covered.
Water distribution rate, water delivery system
setting by location, truck, and conditions.
Activity breakdown including time and distance.
(watering, not watering, stopped, etc.)
View and export at least 6 weeks of historical data.

*Based on equipment connectivity via WiFi or cellular data.

SERVICING EASE

Easy access to daily service points simplifies servicing and reduces time spent on regular maintenance procedures.
Enhanced serviceability and 500-hour service intervals are designed to increase machine availability and productivity.
Maintenance Platform provides access to engine, air filters, steering hydraulic tank and battery compartment.
In-Frame Access permits easy access to major components for easy servicing and removal.
Ground-Level Access allows convenient servicing to tanks, filters, drains, and engine shutdown.
Autolube: Automatic lubrication system reduces maintenance time by automatically lubricating necessary components on a regular basis.
FastFill Service Center: optional service center reduces daily maintenance times with clustered fast fill connections for steering oil, transmission oil, engine oil and coolant.
Pressure Test Points and S•O•S℠ Ports
Sealed Electrical Connectors: Electrical connectors are sealed to lock out dust and moisture. Harnesses are braided for protection.
Fast Fill Fuel provides a receiver at the fuel tank
Easy-to-change air filters

BACKED BY THE ONE YOU TRUST

Cat Water Solutions trucks are sold, serviced, and supported by the local Cat dealer you know and trust.
Full support of Cat dealer and parts network.
The truck is eligible for Equipment Protection Plans (EPP) & Customer Value Agreements (CVAs).

Specifications Standard Equipment Optional Equipment

Product Specifications for 789 (04) Water Truck

Engine

Engine Model	Cat® 3516C HD Cat® 3516C HD
Gross Power - SAE J1995:2014	2100 hp 1566 kW
Net Power - SAE J1349:2011	1969 hp 1468 kW
Emissions	Fuel Optimized 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. Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator.

Tank Configurations

Water Tank Capacity	up to 165 000 L (43,588 gal) up to 165 000 L (43,588 gal)
Note	Multiple tank configurations are offered based on customer preference and regional locations. Water Tank Capacity Range: 110 000 - 121 133 L (29,059 - 32,000 gal) Multiple tank configurations are offered based on customer preference and regional locations. Water Tank Capacity Range: 110 000 - 121 133 L (29,059 - 32,000 gal)
Machine Weight (with water tank full)	480,655 lb - 520,237 lb / 218 022 kg - 235 976 kg 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 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 57,320 lb - 66,769 lb / 26 000 kg - 30 286 kg
Note (1)	Hoist cylinder mounting on all tank offerings enhances serviceability. Hoist cylinder mounting on all tank offerings enhances serviceability.
Note (2)	Number of spray heads can be customized based on customer needs and preferred watering techniques. Option for 3 - 5 spray heads mounted on the back of the water tank. Additional option for spray heads on each side of the water tank. Number of spray heads can be customized based on customer needs and preferred watering techniques. Option for 3 - 5 spray heads mounted on the back of the water tank. Additional option for spray heads on each side of the water tank.
Note (3)	Water cannon arrangement typically mounts to the front of the water tank. Water cannon arrangement typically mounts to the front of the water tank.

Operating Specifications

Note	Water Tank Capacity: up to 165 000 L (43,588 gal) Water Tank Capacity: up to 165 000 L (43,588 gal)
Note (2)	Operator selectable coverage: 0.2-0.8 L/m² (4 kph - 40 kph) / 0.5-0.2 gal/ft² (3 mph - 25 mph) Operator selectable coverage: 0.2-0.8 L/m² (4 kph - 40 kph) / 0.5-0.2 gal/ft² (3 mph - 25 mph)

Weights - Approximate

Target Gross Machine Weight	715000 lb 324319 kg
Chassis Weight	228619 lb 103700 kg

Braking System

Brake Surface - Front	12662 in² 81693 cm²
Brake Surface - Rear	18023 in² 116283 cm²
Brake Standards	ISO 3450:2011 ISO 3450:2011

Body Hoists

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

Steering

Steering Standards	ISO 5010:2019 ISO 5010:2019
Steer Angle	36 ° 36 °
Turning Diameter - Front	99.5 ft 30.34 m

Tires

Standard Tire	37.00-R57 37.00-R57
Note (1)	Productive capabilities of the 789 truck are such that, under certain job conditions, TKPH (TMPH) capabilities of standard or optional tires could be exceeded and, therefore, limit production. Productive capabilities of the 789 truck are such that, under certain job conditions, TKPH (TMPH) capabilities of standard or optional tires could be exceeded and, therefore, limit production.
Note (2)	Caterpillar recommends the customer evaluate all job conditions and consult the tire manufacturer for proper tire selection. Caterpillar recommends the customer evaluate all job conditions and consult the tire manufacturer for proper tire selection.

Service Refill Capacities

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

Cab

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. 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. The FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II FOPS criteria.
Note (1)	The operator sound exposure Leq (equivalent sound pressure level) measured according to work cycle procedures specified in ANSI/SAE J1166 MAY90 is 80 dB(A) for cab offered by Caterpillar, when properly installed, maintained and tested with doors and windows closed. The operator sound exposure Leq (equivalent sound pressure level) measured according to work cycle procedures specified in ANSI/SAE J1166 MAY90 is 80 dB(A) for cab offered by Caterpillar, when properly installed, maintained and tested with doors and windows closed.
Note (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. 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.

Cat Water Delivery System (WDS)

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 5
Minimum number of rear spray heads (recommended 3)	2 2
Minimum number of front/side spray heads	2 2
Maximum number of front/side spray heads	0 0
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 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. 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)	Spray head opening is automatically controlled by the system to achieve Auto Mode Coverage or manual mode flow rate. Spray head opening is automatically controlled by the system to achieve Auto Mode Coverage or manual mode flow rate.
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. 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. 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. 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. Cannon performance depends on nozzle orifice and pipe size.

Suspension

Rear axle - Oscillation

5.4 ° 5.4 °

Weight Distributions - Approximate

Front Axle - Empty	50 % 50 %
Front Axle - Loaded	50 % 50 %
Rear Axle - Empty	33 % 33 %
Rear Axle - Loaded	67 % 67 %

Transmission

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	Maximum travel speeds with standard 37.00-R57 tires. Maximum travel speeds with standard 37.00-R57 tires.

Final Drives

Differential Ratio	2.35:1 2.35:1
Planetary Ratio	10.83:1 10.83:1
Total Reduction Ratio	25.46:1 25.46:1

789 (04) Water Truck Standard Equipment

NOTE

Standard and optional equipment may vary. Consult your Cat dealer for details.

SUSPENSION SYSTEMS

Suspension, rear

OPERATOR ENVIRONMENT

Dome courtesy light

WDS Deluxe Cab: provides a deluxe operator environment with the WDS controls installed. Includes a premium plus operator seat, deluxe companion seat, retractable windshield visor, cab cleanout vacuum, payload indicator lamps, and operator footrest.

Gauge panel: Air pressure, Brake oil temperature, Engine coolant temperature, Fuel level

Air conditioning

Auxiliary power connection/cigarette lighter

Air cleaner service indicator

Diagnostic connection port

Entertainment Radio Ready
– 5 amp converter
– Speakers
– Antenna
– Wiring harness

Heater/defroster

Horn

Vital Info Management System (VIMS)

Traction control system

Storage compartment

Steering wheel, tilt, padded, telescopic

ROPS cab, insulated/sound suppressed

Mirrors, right and left

Window, electric powered, operator

Sun visor

Window, right side, hinged access/egress

Windshield wiper (intermittent) and washer

BRAKING SYSTEM

Oil-cooled, multi-disc (front and rear)/ (service, resistive braking, parking, secondary)

Automatic resistor control

Engine overspeed protection

Brake release motor (towing)

Extended life brake disc material

CAT TECHNOLOGY PRODUCTS

Adaptive economy mode

Object detection (4 cameras, 4 radars)

Product Link™ Ready (Level 1)

TKPH/TMPH (Tons Kilometer Per Hour/ Tons Mile Per Hour)

Work Area Vision System (WAVS)

Cat MineStar™: Level 1 - Basic (Equipment Tracking)*

*Basic connectivity package comes standard on all Cat Water Solutions trucks with a 6-month complimentary service-based offering

POWERTRAIN

Braking System

Aftercooler

Muffler

Automatic starter protection

Fan, conventional drive

Elevated low idle control

Ground level engine shutdown

Multi-point oil pressure sensing

Diesel engine/turbocharged/aftercooled

Ether starting aid (automatic)

Electric start

GUARDS

Engine crankcase

Driveline

Fan and A/C

FLUIDS

Extended Life Coolant to –35° C (–30° F)

TRANSMISSION

Body-up shift inhibitor

6-speed, automatic powershift w/electronic control (TCC)

Controlled throttle shifting

Neutral start switch/coast inhibitor

Directional shift management

Downshift/reverse shift inhibitor

Oil level sensor

Individual clutch modulation

Programmable top gear

Body-up reverse neutralizer

Lock-up torque converter

Rear axle continuous lubrication/filtration

ELECTRICAL

Backup alarm

Alternator (105 A)

Batteries, 12V (2), 93 amp-hour

Converter, 12V electrical

Lighting System

Electrical system, 24V, 15 amp

Payload indicator lights

LED Lighting system: Backup and hazard lights, Directional signals, front and rear, Engine compartment lights, External payload lights, Headlights and fog lights, Lo-hi beam selector, Ladder light and service deck lights, Left-hand ladder/Service deck -Stop/taillights VIMS, blue light

FUEL SYSTEMS

Fast fill fuel system

Fuel filter basic screen

2082 L (550 gal) capacity fuel tank and fast fill system

SAFETY AND SECURITY

Ground level VIMS data port

Ground level battery disconnect

Working at heights handrail

FRAMES

Mirror heated

Driveline guard

SERVICE

Grease injector

ACCESS

Fixed ladder

OTHER STANDARD EQUIPMENT

Vital Information Management System (VIMS) includes: VIMS payload monitor, MAX payload and speed manager

CAT WATER DELIVERY SYSTEM (WDS)

Controls: Factory installed and integrated into cab

Water System Monitor: integrated into cab, programmable spray configurations, automatic diagnostic messages

Variable Hydraulic Pump Drive: 6814 L/min (1,800 gal/min) at speeds of 4 kph to 40 kph (3 to 25 mph) with auto shut-off and soft startup

Stainless Steel Spray Heads: maintenance free, patented design resists corrosion

Independent Hydraulic Cooling System: minimizes overheating

Water Cannon: hydraulically controlled, integrated joystick with cab controls, optional nozzles

Parts & service available through global Cat dealer network

789 (04) Water Truck Optional Equipment

NOTE

Standard and optional equipment may vary. Consult your Cat dealer for details.

OPERATOR ENVIRONMENT

Vacuum, cab clean-out

Hose, cab clean-out

COLD WEATHER

Starting, Cold Weather

Brake oil recirculating

TIRES AND RIMS

Spare rims

SERVICE CENTER

Service Center, Wiggins

POWERTRAIN

Cat 3516C HD-EUI diesel engine

Oil renewal system

Oil cooler, rear axle

Fan, variable speed, rockford for use in freezing weather operations

Pre-lube, engine

Air start

Exhaust deflector

Engine, 1566 kW (2,100 hp) 3516C, HD, EUI, US EPA Tier 2 equivalent

Filtration for oil cooler

Muffler, extended exhaust

Engine, 1417 kW (1,900 hp) 3516B, EUI

CAT TECHNOLOGY PRODUCTS

Cat MineStar™: Level 2 - Premium (Equipment Tracking + Production Recording)

ELECTRICAL

Lock out transmission at ground level

Lighting auxiliary at catwalk and passenger platform

Lighting at body rear for signals and stop/tail lights

FRAMES

Mirror wide and heated

Lift assist struts for front and rear hoods

FUEL SYSTEMS

3785 L (1,000 gal) capacity fuel tank and fast fill system

Fuel filter with separator

Fuel filter with separator and heater

ACCESS

Powered staircase

SERVICE

Service center

Quick connect fitting for engine oil

SAFETY AND SECURITY

Fire extinguisher, portable

Water Tank Offerings with Options

Tanks are offered by local 3rd party providers with customization based on water application and regional customer requirements. Tie offs, ladders, splash guards, fill chute, rock ejectors, cannon selection, and additional options are available. Cat dealer or local tank manufacturer installation. Contact your local Cat dealer or Caterpillar OEM Solutions for recommendations on local tank providers and available options.

Product Specifications for 789 (04) Water Truck

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Engine

Engine Model	Cat® 3516C HD Cat® 3516C HD
Gross Power - SAE J1995:2014	2100 hp 1566 kW
Net Power - SAE J1349:2011	1969 hp 1468 kW
Emissions	Fuel Optimized 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. Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator.

Tank Configurations

Water Tank Capacity	up to 165 000 L (43,588 gal) up to 165 000 L (43,588 gal)
Note	Multiple tank configurations are offered based on customer preference and regional locations. Water Tank Capacity Range: 110 000 - 121 133 L (29,059 - 32,000 gal) Multiple tank configurations are offered based on customer preference and regional locations. Water Tank Capacity Range: 110 000 - 121 133 L (29,059 - 32,000 gal)
Machine Weight (with water tank full)	480,655 lb - 520,237 lb / 218 022 kg - 235 976 kg 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 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 57,320 lb - 66,769 lb / 26 000 kg - 30 286 kg
Note (1)	Hoist cylinder mounting on all tank offerings enhances serviceability. Hoist cylinder mounting on all tank offerings enhances serviceability.
Note (2)	Number of spray heads can be customized based on customer needs and preferred watering techniques. Option for 3 - 5 spray heads mounted on the back of the water tank. Additional option for spray heads on each side of the water tank. Number of spray heads can be customized based on customer needs and preferred watering techniques. Option for 3 - 5 spray heads mounted on the back of the water tank. Additional option for spray heads on each side of the water tank.
Note (3)	Water cannon arrangement typically mounts to the front of the water tank. Water cannon arrangement typically mounts to the front of the water tank.

Operating Specifications

Note	Water Tank Capacity: up to 165 000 L (43,588 gal) Water Tank Capacity: up to 165 000 L (43,588 gal)
Note (2)	Operator selectable coverage: 0.2-0.8 L/m² (4 kph - 40 kph) / 0.5-0.2 gal/ft² (3 mph - 25 mph) Operator selectable coverage: 0.2-0.8 L/m² (4 kph - 40 kph) / 0.5-0.2 gal/ft² (3 mph - 25 mph)

Weights - Approximate

Target Gross Machine Weight	715000 lb 324319 kg
Chassis Weight	228619 lb 103700 kg

Braking System

Brake Surface - Front	12662 in² 81693 cm²
Brake Surface - Rear	18023 in² 116283 cm²
Brake Standards	ISO 3450:2011 ISO 3450:2011

Body Hoists

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

Steering

Steering Standards	ISO 5010:2019 ISO 5010:2019
Steer Angle	36 ° 36 °
Turning Diameter - Front	99.5 ft 30.34 m

Tires

Standard Tire	37.00-R57 37.00-R57
Note (1)	Productive capabilities of the 789 truck are such that, under certain job conditions, TKPH (TMPH) capabilities of standard or optional tires could be exceeded and, therefore, limit production. Productive capabilities of the 789 truck are such that, under certain job conditions, TKPH (TMPH) capabilities of standard or optional tires could be exceeded and, therefore, limit production.
Note (2)	Caterpillar recommends the customer evaluate all job conditions and consult the tire manufacturer for proper tire selection. Caterpillar recommends the customer evaluate all job conditions and consult the tire manufacturer for proper tire selection.

Service Refill Capacities

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

Cab

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. 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. The FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II FOPS criteria.
Note (1)	The operator sound exposure Leq (equivalent sound pressure level) measured according to work cycle procedures specified in ANSI/SAE J1166 MAY90 is 80 dB(A) for cab offered by Caterpillar, when properly installed, maintained and tested with doors and windows closed. The operator sound exposure Leq (equivalent sound pressure level) measured according to work cycle procedures specified in ANSI/SAE J1166 MAY90 is 80 dB(A) for cab offered by Caterpillar, when properly installed, maintained and tested with doors and windows closed.
Note (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. 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.

Cat Water Delivery System (WDS)

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 5
Minimum number of rear spray heads (recommended 3)	2 2
Minimum number of front/side spray heads	2 2
Maximum number of front/side spray heads	0 0
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 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. 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)	Spray head opening is automatically controlled by the system to achieve Auto Mode Coverage or manual mode flow rate. Spray head opening is automatically controlled by the system to achieve Auto Mode Coverage or manual mode flow rate.
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. 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. 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. 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. Cannon performance depends on nozzle orifice and pipe size.

Suspension

Rear axle - Oscillation

5.4 ° 5.4 °

Weight Distributions - Approximate

Front Axle - Empty	50 % 50 %
Front Axle - Loaded	50 % 50 %
Rear Axle - Empty	33 % 33 %
Rear Axle - Loaded	67 % 67 %

Transmission

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	Maximum travel speeds with standard 37.00-R57 tires. Maximum travel speeds with standard 37.00-R57 tires.

Final Drives

Differential Ratio	2.35:1 2.35:1
Planetary Ratio	10.83:1 10.83:1
Total Reduction Ratio	25.46:1 25.46:1

789 (04) Water Truck Standard Equipment

NOTE

Standard and optional equipment may vary. Consult your Cat dealer for details.

SUSPENSION SYSTEMS

Suspension, rear

OPERATOR ENVIRONMENT

Dome courtesy light

WDS Deluxe Cab: provides a deluxe operator environment with the WDS controls installed. Includes a premium plus operator seat, deluxe companion seat, retractable windshield visor, cab cleanout vacuum, payload indicator lamps, and operator footrest.

Gauge panel: Air pressure, Brake oil temperature, Engine coolant temperature, Fuel level

Air conditioning

Auxiliary power connection/cigarette lighter

Air cleaner service indicator

Diagnostic connection port

Entertainment Radio Ready
– 5 amp converter
– Speakers
– Antenna
– Wiring harness

Heater/defroster

Horn

Vital Info Management System (VIMS)

Traction control system

Storage compartment

Steering wheel, tilt, padded, telescopic

ROPS cab, insulated/sound suppressed

Mirrors, right and left

Window, electric powered, operator

Sun visor

Window, right side, hinged access/egress

Windshield wiper (intermittent) and washer

BRAKING SYSTEM

Oil-cooled, multi-disc (front and rear)/ (service, resistive braking, parking, secondary)

Automatic resistor control

Engine overspeed protection

Brake release motor (towing)

Extended life brake disc material

CAT TECHNOLOGY PRODUCTS

Adaptive economy mode

Object detection (4 cameras, 4 radars)

Product Link™ Ready (Level 1)

TKPH/TMPH (Tons Kilometer Per Hour/ Tons Mile Per Hour)

Work Area Vision System (WAVS)

Cat MineStar™: Level 1 - Basic (Equipment Tracking)*

*Basic connectivity package comes standard on all Cat Water Solutions trucks with a 6-month complimentary service-based offering

POWERTRAIN

Braking System

Aftercooler

Muffler

Automatic starter protection

Fan, conventional drive

Elevated low idle control

Ground level engine shutdown

Multi-point oil pressure sensing

Diesel engine/turbocharged/aftercooled

Ether starting aid (automatic)

Electric start

GUARDS

Engine crankcase

Driveline

Fan and A/C

FLUIDS

Extended Life Coolant to –35° C (–30° F)

TRANSMISSION

Body-up shift inhibitor

6-speed, automatic powershift w/electronic control (TCC)

Controlled throttle shifting

Neutral start switch/coast inhibitor

Directional shift management

Downshift/reverse shift inhibitor

Oil level sensor

Individual clutch modulation

Programmable top gear

Body-up reverse neutralizer

Lock-up torque converter

Rear axle continuous lubrication/filtration

ELECTRICAL

Backup alarm

Alternator (105 A)

Batteries, 12V (2), 93 amp-hour

Converter, 12V electrical

Lighting System

Electrical system, 24V, 15 amp

Payload indicator lights

LED Lighting system: Backup and hazard lights, Directional signals, front and rear, Engine compartment lights, External payload lights, Headlights and fog lights, Lo-hi beam selector, Ladder light and service deck lights, Left-hand ladder/Service deck -Stop/taillights VIMS, blue light

FUEL SYSTEMS

Fast fill fuel system

Fuel filter basic screen

2082 L (550 gal) capacity fuel tank and fast fill system

SAFETY AND SECURITY

Ground level VIMS data port

Ground level battery disconnect

Working at heights handrail

FRAMES

Mirror heated

Driveline guard

SERVICE

Grease injector

ACCESS

Fixed ladder

OTHER STANDARD EQUIPMENT

Vital Information Management System (VIMS) includes: VIMS payload monitor, MAX payload and speed manager

CAT WATER DELIVERY SYSTEM (WDS)

Controls: Factory installed and integrated into cab

Water System Monitor: integrated into cab, programmable spray configurations, automatic diagnostic messages

Variable Hydraulic Pump Drive: 6814 L/min (1,800 gal/min) at speeds of 4 kph to 40 kph (3 to 25 mph) with auto shut-off and soft startup

Stainless Steel Spray Heads: maintenance free, patented design resists corrosion

Independent Hydraulic Cooling System: minimizes overheating

Water Cannon: hydraulically controlled, integrated joystick with cab controls, optional nozzles

Parts & service available through global Cat dealer network

789 (04) Water Truck Optional Equipment

NOTE

Standard and optional equipment may vary. Consult your Cat dealer for details.

OPERATOR ENVIRONMENT

Vacuum, cab clean-out

Hose, cab clean-out

COLD WEATHER

Starting, Cold Weather

Brake oil recirculating

TIRES AND RIMS

Spare rims

SERVICE CENTER

Service Center, Wiggins

POWERTRAIN

Cat 3516C HD-EUI diesel engine

Oil renewal system

Oil cooler, rear axle

Fan, variable speed, rockford for use in freezing weather operations

Pre-lube, engine

Air start

Exhaust deflector

Engine, 1566 kW (2,100 hp) 3516C, HD, EUI, US EPA Tier 2 equivalent

Filtration for oil cooler

Muffler, extended exhaust

Engine, 1417 kW (1,900 hp) 3516B, EUI

CAT TECHNOLOGY PRODUCTS

Cat MineStar™: Level 2 - Premium (Equipment Tracking + Production Recording)

ELECTRICAL

Lock out transmission at ground level

Lighting auxiliary at catwalk and passenger platform

Lighting at body rear for signals and stop/tail lights

FRAMES

Mirror wide and heated

Lift assist struts for front and rear hoods

FUEL SYSTEMS

3785 L (1,000 gal) capacity fuel tank and fast fill system

Fuel filter with separator

Fuel filter with separator and heater

ACCESS

Powered staircase

SERVICE

Service center

Quick connect fitting for engine oil

SAFETY AND SECURITY

Fire extinguisher, portable

Water Tank Offerings with Options

Tanks are offered by local 3rd party providers with customization based on water application and regional customer requirements. Tie offs, ladders, splash guards, fill chute, rock ejectors, cannon selection, and additional options are available. Cat dealer or local tank manufacturer installation. Contact your local Cat dealer or Caterpillar OEM Solutions for recommendations on local tank providers and available options.

See how 789 (04) Water Truck compares against frequently compared products.

Off-Highway Trucks

Selected

789 (04) Water Truck

Engine Model: Cat® 3516C HD; Cat® 3516C HD
Gross Power - SAE J1995:2014: 2100 hp; 1566 kW
Water Tank Capacity: up to 165 000 L (43,588 gal); up to 165 000 L (43,588 gal)

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785 (04) Water Truck

Engine Model: Cat® 3512C HD; Cat® 3512C HD
Gross Power - SAE J1995:2014: 1450 hp; 1082 kW
Water Tank Capacity: up to 121 133 L (32,000 gal); up to 121 133 L (32,000 gal)

View Details

Off-Highway Trucks

789 (04) Autonomous Water Truck

Engine Model: Cat® 3516C HD; Cat® 3516C HD
Gross Power - SAE J1995:2014: 2100 hp; 1566 kW
Water Tank Capacity: up to 165 000 L (43,588 gal); up to 165 000 L (43,588 gal)

View Details

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789 (04) water truck

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