789D Mining Truck / Haul Truck

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Nominal Rated Payload211 ton (US) (191 t)
Rated Gross Machine Weight715000 lb (324319 kg)
Gross Power - SAE J19952100 HP (1566 kW)
Engine ModelCat® 3516E
Caterpillar's exclusive design ownership provides advantages by creating a total hauling unit that delivers the best integration of high production, availability, and payload in combination with low operating cost and long life. The new Cat® 789 continues the tradition of Caterpillar's proven 789 Truck with high productivity and lowest in class cost per ton.


Nominal Rated Payload211 ton (US) (191 t)
Rated Gross Machine Weight715000 lb (324319 kg)
Gross Power - SAE J19952100 HP (1566 kW)
Engine ModelCat® 3516E
Chassis Weight234003 lb (106142 kg)
Body Weight59827 lb (27137 kg)
Net Power - SAE J13491975 HP (1473 kW)
Rated Speed1650 r/min (1650 r/min)
Emissions RatingU.S. Tier 4 / EU Stage V
TypeDouble reduction, planetary with full floating axles.
TypeTwin, two-stage hydraulic cylinders with snubbing valve.
Struck101 yd³ (77 m³)
Service BrakesFour-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
Standard Tires37.00-R51
Air ConditioningHFC - 134A refrigerant: 31733 Btu/h
Fuel Tank - Standard544 gal (US) (2060 l)
Steering Angle36.07 ° (36.07 °)
TypeSelf-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments
Bore6.7 in (170 mm)
Front Axle - Empty50 % (50 %)
Rear Axle - Empty50 % (50 %)
Differential Ratio2.35:1
Pump Flow - High Idle106.5 gal/min (403 l/min)
Heaped (SAE 2:1)141 yd³ (108 m³)
Diesel Exhaust Fluid Tank62 gal (US) (233 l)
Heater / Defroster36510 Btu/h (36510 Btu/h)
Front Wet Disc Brake Surface Area12662 in² (81693 cm²)
Height - Top of ROPS18.25 ft (5550 mm)
Optional Tires40.00-R51
Cooling System180 gal (US) (679 l)
Relief Valve Setting - Raise2749 psi (18950 kPa)
Rear - Wet Disc Brake Surface Area20861 in² (134590 cm²)
Overall Body Length42 ft (12810 mm)
Front Axle - Loaded33 % (33 %)
Turning Diameter - Front90.3 ft (27.53 m)
NoteThe operator sound pressure level, 76 dB(A), complies with ISO 6394:2008 and ISO 6396:2008.
Planetary Ratio10.83:1
Rims29" x 57"
Rear Axle - Loaded67 % (67 %)
Steering StandardsISO 5010:2007
StandardsService and Secondary: ISO 3450:2011
ROPS Standards (1)ROPS (Rollover Protective Structure) meets ISO 3471:2008 for Operator and ISO 13459:2012 for Trainer.
Inside Body Length27.33 ft (8391 mm)
Total Reduction Ratio25.46:1
Body Raise Time - High Idle14 s (14 s)
Crankcase77 gal (US) (291 l)
Final Drive - Each5.8 gal (US) (22 l)
FOPS StandardsFOPS (Falling Objects Protective Structure) meets ISO 3449:2005 for Operator and ISO 13459:2012 Level II for Trainer.
Overall Length41.5 ft (12650 mm)
Body Lower Time - Float16 s (16 s)
Stroke8.5 in (215 mm)
Parking BrakeFour-corner, Multi-disc, Spring Applied, Hydraulically Released
Wheel Base18.67 ft (5700 mm)
Displacement4766 in³ (78.1 l)
Differential - Final Drives161 gal (US) (610 l)
Steering Tank42 gal (US) (160 l)
Rear Axle - Tail11.75 ft (3585 mm)
Ground Clearance4.25 ft (1304 mm)
Steering System - Includes Tank46 gal (US) (175 l)
Dump Clearance4.75 ft (1450 mm)
Brake/Hoist Tank169 gal (US) (640 l)
Brake Hoist System347 gal (US) (1315 l)
Loading Height - Empty18.58 ft (5675 mm)
Rear Sidewall Height3.17 ft (974 mm)
Brake Hoist System - Includes Tank55 gal (US) (209 l)
Torque Converter - Transmission System - Including Sump55 gal (US) (209 l)
Inside Body Depth - Maximum9.33 ft (2836 mm)
Overall Height - Body Raised44.08 ft (13435 mm)
Operating Width25.67 ft (7832 mm)
Centerline Front Tire Width17.75 ft (5410 mm)
Engine Guard Clearance4.25 ft (1290 mm)
Overall Canopy Width25.08 ft (7645 mm)
Outside Body Width22.5 ft (6865 mm)
Inside Body Width21.33 ft (6500 mm)
Front Canopy Height21.42 ft (6540 mm)
Rear Axle - Clearance4.17 ft (1263 mm)
Centerline of Rear Dual Tire Width15.42 ft (4695 mm)
Overall Tire Width23.33 ft (7120 mm)
Forward - 17.8 mile/h (12.6 km/h)
Forward - 210.6 mile/h (17.1 km/h)
Forward - 314.4 mile/h (23.1 km/h)
Forward - 419.4 mile/h (31.2 km/h)
Forward - 526.3 mile/h (42.3 km/h)
Forward - 635.5 mile/h (57.2 km/h)
Reverse7.3 mile/h (11.8 km/h)
Effective Cylinder Stroke - Front4.12 in (104.65 mm)
Effective Cylinder Stroke - Rear3.67 in (93.22 mm)
Rear axle - Oscillation±5°
Top Speed - Loaded35.5 mile/h (57.2 km/h)
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 (1)Quick Change Rims optional.
Note (1)Consult your tire manufacturer for maximum tire load.
Note (2)Chassis weight with full fuel and fluids, standard & mandatory attachments, hoist, body mounting group, rims, and tires.
Note (2)Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and TKPH (TMPH) capabilities.

Benefits and Features


From wide slip-resistant surfaces and guard rails to state-of-the-art collision avoidance technologies, the Cat 789 is infused with features to help operators feel safe and confident on the job. Retractable, seat/shoulder belts with three-point operator restraint, wide-angle mirrors, body raised indicator, body retaining cable, guard rails, reverse neutralizer when dumping, low interior sound level, secondary steering system, ground level access shutoff switches, four corner hydraulic brakes actuation, and a 34% bigger cab with visibility improvements.

Operator Work Area

Work Area View improves operator visibility to working environment around machine
— Integrated Object Detection System with Dedicated Dash Display

Anti Rollback

Uses physical grade and payload to determine the rimpull needed to keep the truck stationary. As a truck coasts to a stop up a grade, it will automatically catch the truck with the service brakes if the operator does not press the brake pedal.

Enhanced Traction Control

More Responsive Traction Control System: Reduces tire wear and Improves machine performance.


Most popular 191-tonne (210-ton) truck in the mining industry
— 80% of the industry
— Delivering results for decades
— Easy to operate and maintain


The 789 delivers a faster speed on grade than competitive trucks, reducing cycle times and lowering overall costs. — The 23% net torque rise provides unequaled lugging force during acceleration, on steep grades and in rough underfoot conditions. Torque rise effectively matches transmission shift points for maximum efficiency and fast cycle times.
— And expanded tire options allow mines to take advantage of higher speeds, particularly in flat long-haul high-speed applications.


Like all Cat mechanical-drive trucks, the 789 features four-corner oil-cooled brakes and Automatic Retarding Control to improve handling and machine control so operators can work quickly and confidently.

Machine Utilization

Improved operator comfort and easier machine control means higher utilization of machine capabilities over the shift.


The individual components, software, systems and engine that go inside a Cat truck have different purposes, but they have one very important thing in common: They are all manufactured by Caterpillar and supported by the Cat dealer network.

This integration ensures that the entire truck — from body to bumper, engine to electronics — can be fully optimized to deliver the lowest cost per ton.


No one knows more about how to get the most from a piece of Cat equipment than your local Cat dealer. This one-of-a-kind, on-the-ground support network delivers expert service, integrated solutions, after-sales support, fast and efficient parts fulfilment, world-class rebuild and remanufacturing capabilities, and more.

Cat dealers operate as nearly 200 local businesses — each one fully embedded in and committed to the geographic area it serves. That means you work with people you know, who know your business, and who respond on your timeframe.


Governments and regulatory agencies mandate that you establish and follow environmentally sound policies and practices as you meet the demand for mined materials. We're focused on doing our part to make sure our trucks help you meet those regulations.


We've designed the 789 with a number of enhancements that lessen its impact on the environment. Features like oil renewal systems, continuous rear axle filtration, extended life filters and longer maintenance intervals decrease the amount of waste contributed to the environment.

We also continue to research alternative energy sources such as biofuels (B20) and a liquefied natural gas-supplied Dynamic Gas Blending solutions to find new ways to reduce emissions. In addition, we preserve raw materials, conserve energy and reduce emissions through the Cat Reman program, which returns end-of-life components to like-new condition.


This 789 is EPA Tier 4 / EU Stage V compliant and powered by the 2,100 HP Cat 3516E engine. This quad turbocharged diesel engine delivers high power and reliability in the world's most demanding mining applications. The engine is a 16-cylinder, four-stroke design that uses long, effective power strokes for more complete fuel combustion and optimum efficiency.

Oil Renewal System

Optional oil renewal system extends engine oil change intervals from 500 hours to 4,000 hours or more to increase machine availability and reduce costs.

Fuel Efficiency

The engine provides additional retarding by running against compression on downhill hauls. During retarding applications the engine ECM does not inject fuel into the cylinders for exceptional fuel economy.


Cat trucks are designed to last over 100,000 hours, and many are going well beyond that. The frame, powertrain, engine and components are built to be rebuilt — using new, remanufactured or rebuilt parts and components — so you can take advantage of multiple lives of like-new performance at a fraction-of-new price.


Contradicting a common belief that bigger is better, the 789 has a weight advantage over larger trucks so you can haul more with every load.
— The 789 also delivers a 10-15% cost per ton advantage over competitive trucks, depending on application.


The 789 has been a dependable performer on mine sites for decades, delivering high availability, reliability and reduced costs that come with long life — from the engine and powertrain to the components, brakes and frame.
— Component life is further enhanced thanks to the standard rear-axle continuous filtration feature, which operates when the engine is running.
— Cleaner oil helps promote longer lubrication that leads to longer life.

double reduction final drives

Caterpillar final drives work as a system with the transmission for maximum power to the ground at the lowest cost.

Product Link Elite comes standard

Product LinkTMElite is Caterpillar's next generation on-board hardware that enables your assets to collect and transmit information into locally-hosted or cloud-hosted applications. Its easy-to-configure interface and customizable data-push frequency enable equipment management anywhere, anytime.

Cat® MineStar™ Solutions

Whether you want to address a single challenge or make step changes in the overall safety, efficiency and productivity of your surface operation, Cat® MineStar™ has a solution for you. MineStar is the mining industry's most comprehensive and thoroughly integrated suite of technology offerings.


Cat Fleet helps you identify opportunities to improve truck efficiency in ways that reduce costs, boost productivity and add real value to your bottom line.
— Eliminate Queuing
— Optimize Shift Changes
— Reduce Fuel Stops


This autonomous hauling solution helps improve productivity, efficiency and profitability while reducing overall costs.

What if your trucks could respond to calls to the shovel, move into position, haul to dump points and even report for maintenance — all without an operator on board? That's what Cat Command for hauling enables.

But this autonomous Cat MineStar solution is more than just an operator-free system. It takes advantage of the most sophisticated technologies available to deliver a next-generation haulage solution — one that boosts safety, productivity and availability on busy mine sites, especially those in difficult or remote locations. With autonomous hauling, the future is here — and we're there to help you bring it to your operation.


With the MineStar Detect proximity detection system, you can equip your 789 with cameras to give your operators a better view of what's happening around their equipment — or combine cameras and radar into a true object detection system that automatically alerts operators to hazards.

You can even add satellite capabilities to provide proximity warnings and avoidance zones, seat-belt monitoring that encourages operators to buckle up, and in-cab systems that intervene when they detect fatigue or distraction.

Road Analysis Control (RAC)

Optional system monitors haul road conditions by measuring frame rack and pitch to improve haul road maintenance, cycle times, tire life and fuel efficiency.


When it comes to truck bodies, one size does not fit all. And when it comes to your Cat truck, Cat bodies are the best choice. We follow a dynamic approach to engineering — treating the body as part of a system rather than a static structure. Cat bodies are designed to be an integral part of the entire vehicle system, ensuring you achieve maximum chassis life.
— They're sized to meet payload requirements without compromise to vehicle balance, braking or control.
— From the design to the materials, manufacturing to shipping, the entire process meets Cat standards of quality and control.
— The Caterpillar exclusive 10/10/20 payload guidelines help achieve a balance of excellent payload with safe operation.


A new lightweight design that provides durability along with a higher payload.

The HP body features robust top rail geometry with internal stiffeners and a high-visibility load placement indicator.
— Floating bolsters and spring plates improve overall durability by avoiding welds in high stress areas.
— In addition, the body requires only minimal liner coverage due to thicker and harder base plates.
— Curved front / side transitions minimize carryback.


For mature mines with good operational and maintenance practices, the lighter weight MSD II body is available in several sizes. It is a customer / site specific body that is designed to maximize performance.


The original standard body, the Dual Slope body provides excellent load retention, maintains a low center of gravity with optimum load distribution, reduces shock loading and is available in lined and unlined configurations.

Custom Body Options

A variety of options including tail extensions, sideboards, tumble bars, rock boxes and rock shedders are available to maintain rated payload, reduce spillage and improve hauling efficiencies.

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.

Modular HVAC and modular radiator

We've worked to reduce key contributors to downtime with features like the new modular HVAC (heating, ventilation and air condition) system, which improves reliability and consolidates components so the entire system can be removed and replaced quickly.

Serviceability & Reliability

— Modular HVAC and modular radiator
— Cleaner Hydraulic & Electrical routings
— 100% Airless Electric Start Option
— Extended interval filters with ground access
— Fluid level sight glasses, grouped service pts
— New centralized service center option
— Integrated Detect System or Vision Camera
— LED Lighting
— Continuous Rear Axle Lube Filtration
— Powered Access Option
— Working at Heights Option

Standard Equipment

  • 24V electrical system, low maintenance batteries (2) 93 amp-hour
  • Alarm, backup
  • Brushless alternator, 225 amp
  • Ground accessible power control box: Ethernet VIMS port and VIMS lamp, Engine starter transmission and battery lockouts
  • Jump start/battery charge receptacle
  • LED Lighting system:
    – Backup and hazard lights; Curb Lights (1) RH side, (1) LH side; Turn signals (front and rear LED)
    – Engine compartment lights
    – Headlights with lo-hi beam selector
    – Ladder light and service deck lights
    – Stop/tail lights
  • 12V auxiliary power connection
  • Diagnostic connection port COM3 and Ethernet
  • Delayed engine shutdown
  • Dome courtesy light and map lights
  • Entertainment Radio Ready: Radio mounting provisions and 12V power supply, Speakers, Antenna (AM/FM/WB/satellite radio)
  • Gauges/indicators: critical oil and coolant temperatures, Fuel and DEF level, Engine system, brake and transmission fault indicators, Speedometer, Tachometer
  • Heated mirrors, right and left
  • Hoist, body control (electric)
  • Interactive touchscreen vehicle information display: day/night mode, action alarm, quad gauge display
  • Operator and trainer air suspension seats
  • Power windows
  • Provision for customer accessory mounting
  • Retractable front visor
  • ROPS cab, insulated/sound supressed
  • Stairway & walkway access, 600 mm (24")
  • Steering wheel, tiltable, telescopic
  • Self-filling to windshield washer fluid from AC condensate
  • Storage locations for operator gear
  • Windshield wiper, intermittent control
  • Unitized hydraulic powered HVAC with automatic temperature control
  • 37R57 power train with standard rims
  • Cat 3516E tier 4 final engine and aftertreatment: Automatic engine thermal management, Automatic low voltage idle management, Air cleaner with precleaner (two), Turbocharging (four) with air-to-air aftercooler, Mechanical Electronic Unit Injector MEUI)(TM-A) fuel system, Automatic starter protection, Automatic ether starting aid
  • Hydraulic braking system: Automatic retarder control (ARC), adjustable; Oil-cooled, multi-disc (front & rear) (service, retarding, parking, secondary); Anti roll back strategy, Engine overspeed protection, Park break integrated with gear selector, Brake release motor (towing), Extended life brake disc material
  • Transmission:
    – 6-speed, automatic powershift with electronic control (TCC)
    – Advanced Productivity Electronic Control Strategy (APECS)
    – Body-up reverse neutralizer
    – Body-up shift inhibitor
    – Downshift/reverse shift inhibitor
    – Directional shift management
    – Downshift/reverse shift inhibitor
    – Enhanced Traction Control System (TCS)
    – programmable top gear
    – oil level sensor
    – neutral cost inhibitor
    – neutral start switch
    – lock-up torque converter
    – rear axle continuous lubrication/ filtration
  • Extended Life Coolant to -35° C (-30° F)
  • Product Link Elite
  • Automatic lubrication system
  • Auxiliary "buddy" dumping quick connect
  • Auxiliary steering quick connect (towing)
  • Auxiliary connection "user defined shutdown"
  • Hydraulic filters, 1,000 hours
  • Guards for rotating components
  • Fast fill fuel & DEF remote fill system
  • Mudflaps
  • Secondary steering (automatic)
  • Tie off points
  • Tow hooks (front) and tow pin (rear)
  • Vital Info Management System (VIMS)
  • Sight glasses for hydraulic oils
  • S•O•S℠ sample ports

Optional Equipment

  • Digital payload display
  • Auxiliary work lights (1) RH side, (1) LH side
  • Work lamps
  • Wide heated mirrors
  • No air - electric starter with four batteries, electric horn and automatic lubrication system, Turbine air starter with air tank, air horn and automatic lubrication system, variable speed fan drive
  • Transmission: Rear Axle Oil Cooler & Filter, Engine Pre-lubrication System
  • Prelube, engine
  • Oil renewal system
  • Coolant, -50° C (-58° F)
  • Dual slope Body
  • High Peformance (HP) body
  • MSDII body
  • X body
  • Body specific side wall and tail extensions
  • Customizable body liner packages
  • Body heat exhaust
  • Rock ejectors
  • Rear body lighting package
  • Brake Wear Indicator
  • Cold Weather Starter
  • Hub Odometer, Kilometers
  • Powered access stairway
  • Rim diffuser
  • Right Side Discharge Exhuast Piping
  • Wheel chocks
  • Working at Heights Handrail Arrangement
  • Working at Heights Handhold Arrangement