Off-Highway Trucks 789D Setting the bar in its size class

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Overview

What will it take to boost your bottom line? A truck with a tradition of proven performance in a wide variety of applications? A truck with the lowest cost per ton in its size class, for an overall reduction in your operating costs? The reliability and reduced costs that come with long life — from the engine and powertrain to the components, brakes and frame? With the Cat® 789D, you get all of this — and more. The 789D offers the lowest cost per ton in its size class and high reliability — reducing overall costs and delivering a better bottom line to the most important mine in the world: yours.

10-15% COST PER TON ADVANTAGE OVER THE COMPETITION

The 789D delivers a faster speed on grade than competitive trucks in certain applications, reducing cycle times and lowering overall costs.

UP TO 8% BETTER SPEED ON GRADE

Thanks to a significant speed advantage, the Cat 798 AC lets you move more over the course of a shift — or move the same amount of material with fewer trucks. When you’re ready to go faster, horsepower can be changed with just a software adjustment over a shift change or lunch break.

MOST POPULAR TRUCK IN ITS SIZE CLASS

The 789 is a tried and true performer that has been delivering results on mine sites around the world for decades. Developed specifically for high production mining applications, the 789D simply does its job, no matter the application or conditions.

Power Train - Engine

Engine
Both the Cat® 3516B and 3516C EUI Quad turbocharged diesel engines deliver high power and reliability in the world's most demanding mining applications.
Design
The 3500 series engines are 16-cylinder, four-stroke designs that uses long, effective power strokes for more complete fuel combustion and optimum efficiency.
EPA Compliant
Where applicable, the 3516C engine is compliant with U.S. Environmental Protection Agency emissions requirements.
High Torque Rise
The 23% net torque rise provides unequalled 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.
Enhanced Life
High displacement, low rpm rating, and conservative horsepower ratings mean more time on the haul roads and less time in the shop.
3516B Separate Circuit Aftercooler
Allows the aftercooler circuit to operate cooler than jacket water temperature for a denser air charge and greater combustion efficiency.
3516C Air to Air Aftercooler (ATAAC)
The 1566 kW (2,100 hp) engine option uses an Air To Air Aftercooler to achieve an even greater reduction in air intake temperatures. This results in improved fuel efficiencies and desired emissions levels.
Electronic Control Module (ECM)
Utilizes advanced engine management software to monitor, control, and protect the engine utilizing self-diagnosing electronic sensors.
Air Conditioner Compressor System
The air conditioner compressor and lines have been moved to provide easier service, less connection points and compliance to EU standards. Auto tension functionality makes removing and adjusting belts no longer necessary.
Read More
Power Train - Transmission

Mechanical Power Train
The Cat mechanical drive power train and power shift transmission provides unmatched operating efficiency and control on steep grades, in poor underfoot conditions, and on haul roads with high rolling resistance.
1) Transmission
The Cat six-speed planetary power shift transmission is matched with the direct-injection 3516 diesel engine to deliver constant power over a wide range of operating speeds.
Robust Design
Designed for the higher horsepower of the 3516 engine, the proven planetary power shift transmission is built tough for long life between overhauls.
Transmission Chassis Control (TCC)
TCC uses electronically transferred engine rpm data to execute shifts at preset points for optimum performance, efficiency and clutch life.
2) Lock-Up Torque Converter
Combines maximum rimpull and cushioned shifting of torque converter drive with the efficiency and performance of direct drive. Engages at approximately 7.2 km/h (4.5 mph), delivering more power to the wheels.
3) Final Drives
Cat final drives work as a system with the planetary power shift transmission to deliver maximum power to the ground. Built to withstand the forces of high torque and impact loads, double reduction final drives provide high torque multiplication to further reduce drive train stress.
Steering System
Hydraulic steering control system is designed for exceptional smoothness and precise control. A separate circuit prevents cross contamination for long life.
Supplemental Steering
Supplemental steering system uses pressure accumulators and allows up to three 90 degree turns in case of engine failure.
Tires
Larger tire options have been designed into the 789D to provide a broader choice for tires. Applicable hauling conditions will benefit from increased tire life or significant reduction in tire costs.
Wheels and Rims
Cast rear wheels and Cat center-mount rims are mounted using studs and nuts to minimize maintenance and maximize durability. Optional quick change rims also available.
Read More
Engine/Power Train Integration

Cat Data Link
Electronically integrates machine computer systems to optimize overall power train performance, increase reliability and component life, and reduce operating costs.
Electronic Technician (Cat ET)
Cat ET service tool provides service technicians with easy access to stored diagnostic data through the Cat Data Link to simplify problem diagnosis and increase machine availability.
Integrated Braking Control (IBC)
Integrates Hydraulic Automatic Retarder Control and Traction Control into one system for optimum performance and efficiency.
Body-up Reverse Neutralizer
Automatically shifts the transmission to neutral if the hoist lever is activated while transmission is shifted in reverse.
Controlled Throttle Shifting
Regulates engine rpm during shifting to reduce power train stress and clutch wear by controlling engine speed, torque converter lock-up and transmission clutch engagement for smoother shifts and longer component life.
Read More
Structures
Box-Section Design
The 789D frame uses a box-section design, incorporating two forgings and 21 castings in high stress areas with deep penetrating and continuous wrap-around welds to resist damage from twisting loads without adding extra weight.
Serviceability
The open box-section frame design allows easy access to power train components, reducing overall removal and installation time, and lowering overall repair costs. The raised and pinned body allows excellent access to the transmission.
Steel Structures
Mild steel used throughout frame provides flexibility, durability, and resistance to impact loads, even in cold climates. Additionally, mild steel facilitates easy field repair.
Castings
Castings have large radii with internal reinforcing ribs to dissipate stress in areas of high stress concentration. Castings move welds to lower stress areas for greater frame life.
Integral Four-Post ROPS Cab
Resiliently mounted to the main frame to reduce vibration and sound, the integral ROPS is designed as an extension of the truck frame. The ROPS/FOPS structure provides “five sided protection” for the operator.
Suspension System
Designed to dissipate haul road and loading impacts for longer frame life and a more comfortable ride.
Cylinders
Four independent self-contained, oil pneumatic, variable-rebound suspension cylinders are designed to absorb shocks in the most severe applications.
Durable Design
Rugged cylinders utilize large diameter bore and low pressure nitrogen/oil design for long life with minimal maintenance.
- Front. Front cylinders with preset caster and camber are mounted to the frame and serve as steering kingpins for a tight turning radius with excellent maneuverability and low maintenance.
- Rear. Rear cylinders allow axle oscillation and absorb bending and twisting stresses caused by rough, uneven haul roads rather than transmitting them to the main frame.
Read More
Operator's Station

Operator Environment
Through the packaging of popular attachments into arrangements, customers can now select one cab that is equipped with desired features. Available offerings include a Standard Cab, Deluxe Cab or Deluxe Cold Weather Cab. 1) Air Suspension Seat with Three-Point Operator Restraint 2) Parking Brake Reset Valve 3) Trainer Seat 4) Storage Compartment 5) Operator Window 6) Secondary Brake Pedal 7) Transmission Console 8) Operator Controls 9) Adjustable Steering Wheel/Column (Tilt and Telescoping) 10) Heating/Air Conditioning 11) Monitoring System 12) Object Detection Monitor 13) Upper controls 14) Radio Ready
Enhanced Operator Visibility
Through the use of the fully Integrated Object Detection System, RADAR AND CAMERA, the operator can receive both audible and visual indications of detected objects. In addition, the operators right hand view is improved due to relocation of the air tank lower on the chassis.
Ergonomic Layout
The 789D operator station is ergonomically designed for total machine control in a comfortable, productive and safe environment. All controls, levers, switches and gauges are positioned to maximize productivity and minimize operator fatigue.
Quiet Cab
Integral, sound-suppressed ROPS/FOPS cab is resiliently mounted to the mainframe to isolate the operator from sound and vibration for a quiet, secure and comfortable ride.
Viewing Area
Designed for excellent all-around visibility and clear sight lines to the haul road. The large viewing area enables the operator to maneuver with confidence for high productivity.
Radio Ready
The operator's station comes ready with power ports, speakers, antenna, and electrical connections to facilitate trouble-free radio installation. Consult your dealer for the complete line of available Cat radio options including satellite radio.
Read More
Cat® Brake System

Integrated Braking System
The Cat oil-cooled braking system delivers reliable performance and control in the most extreme haul road conditions. The integrated system combines the service, secondary, parking brake and retarding functions in the same robust system for optimum braking efficiency.

1) Parking/Secondary Piston 2) Service/Retarding Piston 3) Friction Discs 4) Steel Plates 5) Actuating Springs 6) Cooling Oil In 7) Cooling Oil Out
Four Corner Retarding
Four corner retarding with 60/40 percent split (rear/front) in braking effort provides superior control in slippery conditions. Balanced front to rear brake torque provides exceptional braking performance and minimizes wheel lock-up, especially during retarding.
Oil-Cooled Multiple Disc Brakes
Cat four-wheel, forced oil-cooled, multiple disc service brakes are continuously cooled by water-to-oil heat exchangers for exceptional, non-fade braking and retarding performance.
Extended Life Disc Brakes
Extended life friction material has double the wear life of standard brakes and is twice as resistant to glazing for more consistent braking power with less noise.
Pistons
The Cat two-piece piston design combines the service, secondary, parking brake, and retarding functions in the same system. The primary piston hydraulically actuates both service and retarding functions. The secondary piston is spring-applied and held in the disengaged position by hydraulic pressure. If hydraulic system pressure drops below a specified level, the spring-applied secondary piston automatically applies the brakes.
Parking Brake
Oil-cooled, spring-applied, hydraulically released parking brake is applied to all four wheels for superior parking capability on all grades up to 15 percent.
Hydraulic Automatic Retarder Control (HARC)
Hydraulically activated automatic retarder control system electronically controls retarding on grade to maintain optimum engine rpm and oil cooling. Additional braking may be applied using the manual retarder or the brake pedal. HARC is deactivated when the operator applies the brake or accelerator controls.
Read More
Truck Body Systems

Cat Truck Bodies
Matching the truck body to the application is a critical part of achieving the best value from your 789D. Caterpillar offers a variety of application specific body options that yield a payload ranging from 177 to 188 metric tons (195 to 207 tons). The Caterpillar exclusive 10/10/20 payload guidelines help achieve a balance of excellent payload with safe operation.
Body Options
1) Cat “X” Body - The X body is a heavy duty body configured with a variety of liner options to meet site specific requirements of a mine. Like the Dual Slope - the X body is designed for durability across a range of harsh applications. 2) Mine Specific Body (MSD II) - For mature mines with good operational and maintenance practices, the lighter weight MSD II (Mine Specific Design) body is available in several sizes. It is a customer/site specific body that is designed to maximize performance. The MSD II is designed to maximize payload, provide good durability and can be configured with a variety of liner options to meet the specific requirements of the mine. 3) Gateless Coal Body - This specialized high volume body, available in several sizes, is targeted at dedicated coal haulage applications with minimal impact. The kicked up floor design eliminates the tailgate and gives the volume required to meet target payload. 4) Combination Body - This is a multi-purpose, high volume body for light density, well fragmented material. Based off of the dual slope design for customers who need a flexible body to haul light ore (such as coal) and light, well fragmented overburden. 5) Dual Slope Body - 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. The Dual Slope body is intended for tough applications including greenfield sites and contracting mines.
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.
Read More
Monitoring System

VIMS™ Monitoring System
Intelligent Caterpillar designed machine monitoring system provides critical machine health and payload data in real-time to keep the 789D performing at top production levels. This system is translated and available in most of the major international languages.
Production Management
Production Management enhances truck/loading tool effectiveness, improves fleet productivity and helps extend the life of truck frames, tires, rims and power train components, while lowering operating and maintenance cost.
Payload Management
Max Payload Speed Manager is a feature that aids in managing the Cat 10/10/20 Overload Policy. Based on target payload weight and overload settings, the VIMS system logs and warns the operator when the truck reaches overload after 2nd gear reweigh. The truck will be limited to 2nd gear at 1,750 rpm, and the automatic retarder speed setting is reduced to 1,750 rpm until the load is dumped. Payload management enables the manager to enhance truck/loading tool effectiveness and productivity levels by preventing overloads that can cause damage to component life and affect operator safety.
Road Analysis Control (RAC)
Optional system monitors haul road conditions by measuring frame rack, pitch, and bias to improve haul road maintenance, cycle times, tire life, and fuel efficiency.
VIMS-PC
VIMS-PC, the off-board reporting software program, allows service personnel to download a complete record of machine health and productivity data to a laptop computer for diagnosis and analysis. Easy-to-use software enables service technicians and mine management to generate health and payload reports for more effective machine management.
VIMS Supervisor
Optional software allows mine management to easily manage and interpret VIMS data for optimum fleet management and productivity.
Machine Management
Service technicians or mine personnel can download data and generate reports for better machine management. Data can be used to improve effectiveness of scheduled maintenance programs, maximize component life, improve machine availability, and lower operating costs.
Read More
Safety

Product Safety
Caterpillar has been and continues to be proactive in developing mining machines that meet or exceed safety standards. Safety is an integral part of all machine and system designs.
Mining Technologies
Cat® MineStar™ System encompasses a comprehensive suite of mining technologies grouped within a number of configurable capability sets, including Fleet, Terrain, Detect, Health, and Command. Object Detection is part of the Detect capability set and provides customers with a scalable system to aid in the awareness of machines and other objects in the near vicinity of working equipment. Object Detection systems are factory installed as standard equipment on 789D mining trucks. The fully integrated Object Detection system, RADAR AND CAMERA, provides both audible and visual indications of detected objects using radars which surround the machine, along with cameras on each side to allow the operator to confirm the detected object. The cameras supplement the radar alerts and are selectable by touch screen menus through an intuitive interface.
Overload Policy
Adherence to the Caterpillar 10/10/20 Overload Policy assures that steering and braking systems have sufficient capacity to perform.
Standard Safety Features
Slip resistant surfaces, 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.
SAFETY.CAT.COM™

Read More
Sustainability

Sustainability Features
The 789D Mining Truck offers oil renewal systems, extended life filters and extended maintenance intervals which aid in decreasing the amount of waste contributed to our environment.
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.
Engines with Advanced Technology
Engines with advanced technology contribute less emissions to the environment while maintaining fuel efficiency.
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.
Read More
Serviceability

Tie Off Points
Enhances working environment during service of recommended maintenance areas.
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, 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. Ground-level VIMS data port permits easier downloading of information.
Autolube
Automatic lubrication system reduces maintenance time by automatically lubricating necessary components on a regular basis.
Fast Fill Service Center
Optional fast fill service center features high speed fuel and oil exchange.
Scheduled Oil Sampling
S•O•SSM sampling valves speed sampling and analysis reliability.
Pressure Test Points
Disconnect valves are conveniently located throughout the hydraulic systems for easy pressure testing.
Sealed Electrical Connectors
Electrical connectors are sealed to lock out dust and moisture. Harnesses are braided for protection. Wires are color coded for easy diagnosis and repair.
Cylinder Heads
Individual cylinder heads are interchangeable for easy removal and visual inspection of internal parts.
On-Board Diagnostic Systems
The VIMS system continuously monitors all critical machine functions and components to help locate faults quickly for faster repair.
Read More
Customer Support

Commitment Makes the Difference
Cat dealers offer a wide range of solutions, services and products that help you lower costs, enhance productivity and manage your operation more efficiently. Support goes far beyond parts and service. From the time you select a piece of Cat equipment until the day you rebuild, trade or sell it, the support you get from your Cat dealer makes the difference that counts.
Dealer Capability
Cat dealers will provide the level of support you need, on a global scale. Dealer expert technicians have the knowledge, experience, training and tooling necessary to handle your repair and maintenance needs, when and where you need them.
Product Support
Cat dealers believe superior products deserve superior support. When Cat products reach the field, they are supported by a worldwide network of parts distribution facilities, dealer service centers, and technical training facilities to keep your equipment up and running. Cat customers rely on prompt, dependable parts availability and expertise through our global dealer network, ready to meet your needs 24/7.
Technology Products
Cat dealers offer a range of advanced technology products such as VIMS monitoring system and MineStar® information management system. These products include radio data communications, machine monitoring and diagnostics, fleet management, and haul road maintenance software - all designed to improve fleet efficiency, increase productivity, and lower costs.
www.cat.com
For more complete information on Cat products, dealer services, and industry solutions, visit us on the web at www.cat.com.
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Engine

Both the Cat® 3516B and 3516C EUI Quad turbocharged diesel engines deliver high power and reliability in the world's most demanding mining applications.

Design

The 3500 series engines are 16-cylinder, four-stroke designs that uses long, effective power strokes for more complete fuel combustion and optimum efficiency.

EPA Compliant

Where applicable, the 3516C engine is compliant with U.S. Environmental Protection Agency emissions requirements.

High Torque Rise

The 23% net torque rise provides unequalled 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.

Enhanced Life

High displacement, low rpm rating, and conservative horsepower ratings mean more time on the haul roads and less time in the shop.

3516B Separate Circuit Aftercooler

Allows the aftercooler circuit to operate cooler than jacket water temperature for a denser air charge and greater combustion efficiency.

3516C Air to Air Aftercooler (ATAAC)

The 1566 kW (2,100 hp) engine option uses an Air To Air Aftercooler to achieve an even greater reduction in air intake temperatures. This results in improved fuel efficiencies and desired emissions levels.

Electronic Control Module (ECM)

Utilizes advanced engine management software to monitor, control, and protect the engine utilizing self-diagnosing electronic sensors.

Air Conditioner Compressor System

The air conditioner compressor and lines have been moved to provide easier service, less connection points and compliance to EU standards. Auto tension functionality makes removing and adjusting belts no longer necessary.

Mechanical Power Train

The Cat mechanical drive power train and power shift transmission provides unmatched operating efficiency and control on steep grades, in poor underfoot conditions, and on haul roads with high rolling resistance.

1) Transmission

The Cat six-speed planetary power shift transmission is matched with the direct-injection 3516 diesel engine to deliver constant power over a wide range of operating speeds.

Robust Design

Designed for the higher horsepower of the 3516 engine, the proven planetary power shift transmission is built tough for long life between overhauls.

Transmission Chassis Control (TCC)

TCC uses electronically transferred engine rpm data to execute shifts at preset points for optimum performance, efficiency and clutch life.

2) Lock-Up Torque Converter

Combines maximum rimpull and cushioned shifting of torque converter drive with the efficiency and performance of direct drive. Engages at approximately 7.2 km/h (4.5 mph), delivering more power to the wheels.

3) Final Drives

Cat final drives work as a system with the planetary power shift transmission to deliver maximum power to the ground. Built to withstand the forces of high torque and impact loads, double reduction final drives provide high torque multiplication to further reduce drive train stress.

Steering System

Hydraulic steering control system is designed for exceptional smoothness and precise control. A separate circuit prevents cross contamination for long life.

Supplemental Steering

Supplemental steering system uses pressure accumulators and allows up to three 90 degree turns in case of engine failure.

Tires

Larger tire options have been designed into the 789D to provide a broader choice for tires. Applicable hauling conditions will benefit from increased tire life or significant reduction in tire costs.

Wheels and Rims

Cast rear wheels and Cat center-mount rims are mounted using studs and nuts to minimize maintenance and maximize durability. Optional quick change rims also available.

Cat Data Link

Electronically integrates machine computer systems to optimize overall power train performance, increase reliability and component life, and reduce operating costs.

Electronic Technician (Cat ET)

Cat ET service tool provides service technicians with easy access to stored diagnostic data through the Cat Data Link to simplify problem diagnosis and increase machine availability.

Integrated Braking Control (IBC)

Integrates Hydraulic Automatic Retarder Control and Traction Control into one system for optimum performance and efficiency.

Body-up Reverse Neutralizer

Automatically shifts the transmission to neutral if the hoist lever is activated while transmission is shifted in reverse.

Controlled Throttle Shifting

Regulates engine rpm during shifting to reduce power train stress and clutch wear by controlling engine speed, torque converter lock-up and transmission clutch engagement for smoother shifts and longer component life.

Box-Section Design

The 789D frame uses a box-section design, incorporating two forgings and 21 castings in high stress areas with deep penetrating and continuous wrap-around welds to resist damage from twisting loads without adding extra weight.

Serviceability

The open box-section frame design allows easy access to power train components, reducing overall removal and installation time, and lowering overall repair costs. The raised and pinned body allows excellent access to the transmission.

Steel Structures

Mild steel used throughout frame provides flexibility, durability, and resistance to impact loads, even in cold climates. Additionally, mild steel facilitates easy field repair.

Castings

Castings have large radii with internal reinforcing ribs to dissipate stress in areas of high stress concentration. Castings move welds to lower stress areas for greater frame life.

Integral Four-Post ROPS Cab

Resiliently mounted to the main frame to reduce vibration and sound, the integral ROPS is designed as an extension of the truck frame. The ROPS/FOPS structure provides “five sided protection” for the operator.

Suspension System

Designed to dissipate haul road and loading impacts for longer frame life and a more comfortable ride.

Cylinders

Four independent self-contained, oil pneumatic, variable-rebound suspension cylinders are designed to absorb shocks in the most severe applications.

Durable Design

Rugged cylinders utilize large diameter bore and low pressure nitrogen/oil design for long life with minimal maintenance.

Front. Front cylinders with preset caster and camber are mounted to the frame and serve as steering kingpins for a tight turning radius with excellent maneuverability and low maintenance.
Rear. Rear cylinders allow axle oscillation and absorb bending and twisting stresses caused by rough, uneven haul roads rather than transmitting them to the main frame.

Operator Environment

Through the packaging of popular attachments into arrangements, customers can now select one cab that is equipped with desired features. Available offerings include a Standard Cab, Deluxe Cab or Deluxe Cold Weather Cab. 1) Air Suspension Seat with Three-Point Operator Restraint 2) Parking Brake Reset Valve 3) Trainer Seat 4) Storage Compartment 5) Operator Window 6) Secondary Brake Pedal 7) Transmission Console 8) Operator Controls 9) Adjustable Steering Wheel/Column (Tilt and Telescoping) 10) Heating/Air Conditioning 11) Monitoring System 12) Object Detection Monitor 13) Upper controls 14) Radio Ready

Enhanced Operator Visibility

Through the use of the fully Integrated Object Detection System, RADAR AND CAMERA, the operator can receive both audible and visual indications of detected objects. In addition, the operators right hand view is improved due to relocation of the air tank lower on the chassis.

Ergonomic Layout

The 789D operator station is ergonomically designed for total machine control in a comfortable, productive and safe environment. All controls, levers, switches and gauges are positioned to maximize productivity and minimize operator fatigue.

Quiet Cab

Integral, sound-suppressed ROPS/FOPS cab is resiliently mounted to the mainframe to isolate the operator from sound and vibration for a quiet, secure and comfortable ride.

Viewing Area

Designed for excellent all-around visibility and clear sight lines to the haul road. The large viewing area enables the operator to maneuver with confidence for high productivity.

Radio Ready

The operator's station comes ready with power ports, speakers, antenna, and electrical connections to facilitate trouble-free radio installation. Consult your dealer for the complete line of available Cat radio options including satellite radio.

Integrated Braking System

The Cat oil-cooled braking system delivers reliable performance and control in the most extreme haul road conditions. The integrated system combines the service, secondary, parking brake and retarding functions in the same robust system for optimum braking efficiency.

1) Parking/Secondary Piston 2) Service/Retarding Piston 3) Friction Discs 4) Steel Plates 5) Actuating Springs 6) Cooling Oil In 7) Cooling Oil Out

Four Corner Retarding

Four corner retarding with 60/40 percent split (rear/front) in braking effort provides superior control in slippery conditions. Balanced front to rear brake torque provides exceptional braking performance and minimizes wheel lock-up, especially during retarding.

Oil-Cooled Multiple Disc Brakes

Cat four-wheel, forced oil-cooled, multiple disc service brakes are continuously cooled by water-to-oil heat exchangers for exceptional, non-fade braking and retarding performance.

Extended Life Disc Brakes

Extended life friction material has double the wear life of standard brakes and is twice as resistant to glazing for more consistent braking power with less noise.

Pistons

The Cat two-piece piston design combines the service, secondary, parking brake, and retarding functions in the same system. The primary piston hydraulically actuates both service and retarding functions. The secondary piston is spring-applied and held in the disengaged position by hydraulic pressure. If hydraulic system pressure drops below a specified level, the spring-applied secondary piston automatically applies the brakes.

Parking Brake

Oil-cooled, spring-applied, hydraulically released parking brake is applied to all four wheels for superior parking capability on all grades up to 15 percent.

Hydraulic Automatic Retarder Control (HARC)

Hydraulically activated automatic retarder control system electronically controls retarding on grade to maintain optimum engine rpm and oil cooling. Additional braking may be applied using the manual retarder or the brake pedal. HARC is deactivated when the operator applies the brake or accelerator controls.

Cat Truck Bodies

Matching the truck body to the application is a critical part of achieving the best value from your 789D. Caterpillar offers a variety of application specific body options that yield a payload ranging from 177 to 188 metric tons (195 to 207 tons). The Caterpillar exclusive 10/10/20 payload guidelines help achieve a balance of excellent payload with safe operation.

Body Options

1) Cat “X” Body - The X body is a heavy duty body configured with a variety of liner options to meet site specific requirements of a mine. Like the Dual Slope - the X body is designed for durability across a range of harsh applications. 2) Mine Specific Body (MSD II) - For mature mines with good operational and maintenance practices, the lighter weight MSD II (Mine Specific Design) body is available in several sizes. It is a customer/site specific body that is designed to maximize performance. The MSD II is designed to maximize payload, provide good durability and can be configured with a variety of liner options to meet the specific requirements of the mine. 3) Gateless Coal Body - This specialized high volume body, available in several sizes, is targeted at dedicated coal haulage applications with minimal impact. The kicked up floor design eliminates the tailgate and gives the volume required to meet target payload. 4) Combination Body - This is a multi-purpose, high volume body for light density, well fragmented material. Based off of the dual slope design for customers who need a flexible body to haul light ore (such as coal) and light, well fragmented overburden. 5) Dual Slope Body - 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. The Dual Slope body is intended for tough applications including greenfield sites and contracting mines.

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.

VIMS™ Monitoring System

Intelligent Caterpillar designed machine monitoring system provides critical machine health and payload data in real-time to keep the 789D performing at top production levels. This system is translated and available in most of the major international languages.

Production Management

Production Management enhances truck/loading tool effectiveness, improves fleet productivity and helps extend the life of truck frames, tires, rims and power train components, while lowering operating and maintenance cost.

Payload Management

Max Payload Speed Manager is a feature that aids in managing the Cat 10/10/20 Overload Policy. Based on target payload weight and overload settings, the VIMS system logs and warns the operator when the truck reaches overload after 2nd gear reweigh. The truck will be limited to 2nd gear at 1,750 rpm, and the automatic retarder speed setting is reduced to 1,750 rpm until the load is dumped. Payload management enables the manager to enhance truck/loading tool effectiveness and productivity levels by preventing overloads that can cause damage to component life and affect operator safety.

Road Analysis Control (RAC)

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

VIMS-PC

VIMS-PC, the off-board reporting software program, allows service personnel to download a complete record of machine health and productivity data to a laptop computer for diagnosis and analysis. Easy-to-use software enables service technicians and mine management to generate health and payload reports for more effective machine management.

VIMS Supervisor

Optional software allows mine management to easily manage and interpret VIMS data for optimum fleet management and productivity.

Machine Management

Service technicians or mine personnel can download data and generate reports for better machine management. Data can be used to improve effectiveness of scheduled maintenance programs, maximize component life, improve machine availability, and lower operating costs.

Product Safety

Caterpillar has been and continues to be proactive in developing mining machines that meet or exceed safety standards. Safety is an integral part of all machine and system designs.

Mining Technologies

Cat® MineStar™ System encompasses a comprehensive suite of mining technologies grouped within a number of configurable capability sets, including Fleet, Terrain, Detect, Health, and Command. Object Detection is part of the Detect capability set and provides customers with a scalable system to aid in the awareness of machines and other objects in the near vicinity of working equipment. Object Detection systems are factory installed as standard equipment on 789D mining trucks. The fully integrated Object Detection system, RADAR AND CAMERA, provides both audible and visual indications of detected objects using radars which surround the machine, along with cameras on each side to allow the operator to confirm the detected object. The cameras supplement the radar alerts and are selectable by touch screen menus through an intuitive interface.

Overload Policy

Adherence to the Caterpillar 10/10/20 Overload Policy assures that steering and braking systems have sufficient capacity to perform.

Standard Safety Features

Slip resistant surfaces, 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.

SAFETY.CAT.COM™

Sustainability Features

The 789D Mining Truck offers oil renewal systems, extended life filters and extended maintenance intervals which aid in decreasing the amount of waste contributed to our environment.

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.

Engines with Advanced Technology

Engines with advanced technology contribute less emissions to the environment while maintaining fuel efficiency.

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.

Tie Off Points

Enhances working environment during service of recommended maintenance areas.

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, 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. Ground-level VIMS data port permits easier downloading of information.

Autolube

Automatic lubrication system reduces maintenance time by automatically lubricating necessary components on a regular basis.

Fast Fill Service Center

Optional fast fill service center features high speed fuel and oil exchange.

Scheduled Oil Sampling

S•O•SSM sampling valves speed sampling and analysis reliability.

Pressure Test Points

Disconnect valves are conveniently located throughout the hydraulic systems for easy pressure testing.

Sealed Electrical Connectors

Electrical connectors are sealed to lock out dust and moisture. Harnesses are braided for protection. Wires are color coded for easy diagnosis and repair.

Cylinder Heads

Individual cylinder heads are interchangeable for easy removal and visual inspection of internal parts.

On-Board Diagnostic Systems

The VIMS system continuously monitors all critical machine functions and components to help locate faults quickly for faster repair.

Commitment Makes the Difference

Cat dealers offer a wide range of solutions, services and products that help you lower costs, enhance productivity and manage your operation more efficiently. Support goes far beyond parts and service. From the time you select a piece of Cat equipment until the day you rebuild, trade or sell it, the support you get from your Cat dealer makes the difference that counts.

Dealer Capability

Cat dealers will provide the level of support you need, on a global scale. Dealer expert technicians have the knowledge, experience, training and tooling necessary to handle your repair and maintenance needs, when and where you need them.

Product Support

Cat dealers believe superior products deserve superior support. When Cat products reach the field, they are supported by a worldwide network of parts distribution facilities, dealer service centers, and technical training facilities to keep your equipment up and running. Cat customers rely on prompt, dependable parts availability and expertise through our global dealer network, ready to meet your needs 24/7.

Technology Products

Cat dealers offer a range of advanced technology products such as VIMS monitoring system and MineStar® information management system. These products include radio data communications, machine monitoring and diagnostics, fleet management, and haul road maintenance software - all designed to improve fleet efficiency, increase productivity, and lower costs.

www.cat.com

For more complete information on Cat products, dealer services, and industry solutions, visit us on the web at www.cat.com.

Full Specifications Standard Equipment Optional Equipment

Product Specifications for 789D

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US
Metric

Engine

Engine Model	3516C - HD 3516C - HD
Gross Power - SAE J1995	2100.0 HP 1566.0 kW
Bore	6.7 in 170.0 mm
Stroke	8.3 in 210.0 mm
Displacement	4766.0 in³ 78.1 l
Net Power	1969.0 HP 1468.0 kW
Gross Power	2100.0 HP 1566.0 kW
Rated Net Power - ISO 9249	1969.0 HP 1468.0 kW

Optional Engine

Stroke	7.5 in 190.0 mm
Gross Power	1900.0 HP 1417.0 kW
Displacement	4211.0 in³ 69.0 l
Rated Net Power - ISO 9249	1791.0 HP 1335.0 kW
Engine Model	3516B EUI 3516B EUI
Bore	6.7 in 170.0 mm

Weights - Approximate

Gross Machine Operating Weight (GMW)	715000.0 lb 324319.0 kg
Empty Operating Chassis Weight (EOCW)	218542.0 lb 99129.0 kg
Body Weight Range	23 920 kg-45 547 kg (52,850 lb-100,414 lb) 23 920 kg-45 547 kg (52,850 lb-100,414 lb)

Operating Specifications

Nominal Payload Capacity	200.0 ton (US) 181.0 t
Standard MSD Body (SAE 2:1)	170.0 yd³ 130.0 m³
Standard Combi Body (SAE 2:1)	200.0 yd³ 153.0 m³
Standard Gateless Coal Body (SAE 2:1)	250.0 yd³ 191.0 m³
Standard Dual Slope Body (SAE 2:1)	141.0 yd³ 108.0 m³
Standard X Body (SAE 2:1)	161.0 yd³ 123.0 m³

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

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	7.3 mile/h 11.8 km/h

Suspension

Effective Cylinder Stroke - Front	4.0 in 105.0 mm
Effective Cylinder Stroke - Rear	3.5 in 93.0 mm
Rear axle - Oscillation	±5.6° ±5.6°

Brakes

Brake Surface - Rear	18024.0 in² 116283.0 cm²
Standards	SAE J1473 OCT90 ISO 3450:1996 SAE J1473 OCT90 ISO 3450:1996
Brake Surface - Front	12662.0 in² 81693.0 cm²

Body Hoists

Pump Flow - High Idle	193.0 gal/min 731.0 l/min
Relief Valve Setting - Raise	2500.0 psi 17238.0 kPa
Body Raise Time - High Idle	18.9 s 18.9 s
High Idle Body Lower Time - Power	15.6 s 15.6 s
High Idle Body Lower Time - Float	17.3 s 17.3 s

Weight Distributions - Approximate

Front Axle - Loaded	33.0 % 33.0 %
Rear Axle - Loaded	67.0 % 67.0 %
Rear Axle - Empty	54.0 % 54.0 %
Front Axle - Empty	46.0 % 46.0 %

Tires

Optional Tires	40.00-R57 40.00-R57
Standard Tires	37.00-R57 37.00-R57

Service Refill Capacities

Fuel Tank - Optional	1000.0 gal (US) 3785.0 l
Transmission Tank	20.0 gal (US) 76.0 l
Crankcase	77.0 gal (US) 291.0 l
Differential - Final Drives	154.0 gal (US) 583.0 l
Fuel Tank - Standard	550.0 gal (US) 2082.0 l
Brake Hoist System	241.0 gal (US) 909.0 l
Steering System	50.0 gal (US) 189.0 l
Cooling System	192.0 gal (US) 725.0 l

ROPS

ROPS Standards

Standards Standards

Sound

Sound Standards

Standards Standards

Steering

Vehicle Clearance - Turn Circle	99.18 ft 30.23 m
Steering Angle	36.07 ° 36.07 °
Turning Diameter - Front Wheel	90.32 ft 27.53 m
Steering Standards	SAE J1511 OCT90 ISO 5010:1992 SAE J1511 OCT90 ISO 5010:1992

789D Standard Equipment

POWER TRAIN

Diesel engine/turbocharged/aftercooled:
–Ground level engine shutdown
–Ether starting aid (automatic
– Aftercooler (separate circuit or air to air)
– Elevated low idle control
– Automatic starter protection
– Multi-point all pressure sensing

Braking system:
–Brake release motor (towing)
– Oil-cooled, multi-disc (front and rear)
– (service retarding, parking, secondary)
– Automatic Retarder Control
– Engine overspeed protection
– Extended life brake disc material

Transmission:
– 6-speed, automatic powershift with electronic control (TCC)
– Controlled throttle shifting; Individual clutch modulation
– Body-up shift inhibitor
– Directional shift management
– Downshift/reverse shift inhibitor
– Oil level sensor
– Neutral start switch/coast inhibitor
– Body-up reverse neutralizer
– Programmable top gear
– Lock-up torque converter
– Rear axle continuous lubrication/filtration

ELECTRICAL

Alarm, backup

Alternator, 105 amp

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

Converter, 12V electrical

Electrical system, 24V, 15 amp

Lighting system:
– Backup and hazard lights; Auxiliary work lights (2) rear, (1) RH side, (1) LH side; Directional signals (front and rear LED)
– Engine compartment lights
– External payload lights
– Headlights with lo-hi beam selector
– Ladder light and service deck lights
– Left-hand ladder/service deck
– Stop/tail lights (LED)
– VIMS, blue light (LED)

OPERATOR ENVIRONMENT

STANDARD CAB:
– Operator seat
–Non-suspension trainer seat
– Flip down front visor
– Standard side of cab access

DELUXE CAB:
– Heated and ventilated operator seat
– Suspension trainer seat
– Retractable front visor
– Rear of cab access and standard side of cab access
– Vacuum, cab clean-out
– Operator Footrest

DELUXE COLD WEATHER CAB:
– Heated and ventilated operator seat
– Suspension trainer seat
– Retractable front visor
– Rear of cab access and standard side of cab access
– Vacuum
–cab clean-out
–Operator Footrest
– Deluxe Diffuser

Air conditioner

Auxiliary power connection/cigarette lighter

Diagnostic connection port

Dome courtesy light

Entertainment Radio Ready: 5 amp converter, Speakers, Antenna wiring

Gauges/indicators: Air cleaner service indicator; Quad gauge panel: Air pressure, Brake oil temperature, Engine coolant temperature, Fuel level

Electric hour meter

Electric engine control fault indicator

Engine idle shutdown

Mirrors, right and left

Speedometer

Tachometer

Transmission gear indicator

VIMS message center with universal gauge

VIMS keypad

Heater/defroster (11 070 kCal/43,930 BTU)

Horn

Hoist, body control (electric)

Integrated object detection system

ROPS cab, insulated/sound suppressed

Seatbelt, operator, 75 mm/3" wide

Seatbelt, trainer, two points

Stairway and walkway access, 600 mm (24 in)

Steering wheel, tilt, padded, telescopic

Window, operator, electric powered

Windshield wiper, intermittent control and washer

FLUIDS

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

OTHER STANDARD EQUIPMENT

Air line dryer

Auto lubrication system

Auxiliary “buddy” dumping quick connect

Auxiliary steering quick connect (towing)

Body mounting group

Center mounted rims (6) (29×57) (used for 37.00-R57 tires)

Driveline guard (fully enclosed)

Fast fill fuel system

Ground level VIMS data port

Ground level battery disconnect

Rock ejectors

Supplemental steering (automatic)

Tie off points

Tow hooks (front)

Tow pin (rear)

Traction Control System

Vital Information Management System

789D Optional Equipment

BODY

Dual slope body: Body, dual slope, 109 m3 (142 yd3)

Dual slope body attachments:
– Extensions, 457 mm (18"), side, DS, 123 m3 (161 yd3)
– Extension, wraparound tail, DS
– Liner, entire body, DS
– Liner, wraparound, DS, 450 BHN
– Rock deflector, rear tire, DS

X body: Body, X, 123 m3 (161 yd3)

X body attachments: Extensions, side, X, 185 mm (7"), 131 m3 (171 yd3); Extensions, side, X, 385 mm (15"), 138 m3 (181 yd3)

MSD II body: Body, MSD II, 130 m3 (170 yd3)

MSD II body attachments:
– Extensions, side, MSD II, 141 m3 (185 yd3)
– Extensions, side, MSD II, 153 m3 (200 yd3)

Combination body: Body, combi, 153 m3 (200 yd3)

Combination body attachments: Extensions, side, combi, 195 m3 (255 yd3)

Gateless coal body: Body, gateless coal, 191 m3 (250 yd3)

Gateless coal body attachments: Extensions, side, coal, 214 m3 (280 yd3); Extensions, side, coal, 237 m3 (310 yd3)

Body lighting group - rear:
– Directional signals (LED)
– Stop/tail lights (LED)

ELECTRICAL

Lockout transmission, ground level

Auxiliary work lights (1) RH side, (1) LH side

POWER TRAIN

Prelube, engine

Oil renewal system

FILTRATION CONFIGURATIONS

Rear axle, cooler

OTHER ATTACHMENTS

Information management: Control, road analysis (RAC)

Cold weather: Brake oil, recirculating; Cold weather start

Service center:
– Service, 3516B, standard volume
– Service, 3516B, large volume
– Service, 3516C, standard volume
– Service, 3516C, large volume
– Service, engine oil, standard

Miscellaneous:
– Fire extinguisher, portable
– Hub odometer, kilometers
– Wheel chocks
– Gauge, brake wear indicator

ANTIFREEZE

Coolant, -50° C (-58° F)

See how 789D compares against frequently compared products.

US
Metric

Off-Highway Trucks 789D

Nominal Payload Capacity: 200.0 ton (US); 181.0 t
Engine Model: 3516C - HD; 3516C - HD
Gross Power - SAE J1995: 2100.0 HP; 1566.0 kW

Selected Model

Off-Highway Trucks 785D

Engine Model: Cat® 3512C HD; Cat® 3512C HD
Gross Power - SAE J1995: 1450.0 HP; 1082.0 kW
Gross Machine Operating Weight (GMW): 550000.0 lb; 249476.0 kg

Model Details

Off-Highway Trucks 793D

Nominal Payload Capacity: 240.0 ton (US); 218.0 t
Engine Model: Cat 3516B HD EUI; Cat 3516B HD EUI
Gross Power - SAE J1995: 2415.0 HP; 1801.0 kW

Model Details

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