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Power Train - Engine

The Cat 3508B engine is built for power, reliability and efficiency for superior performance in the toughest applications.

Power Train - Transmission

Cat power train delivers more power to the ground for greater productivity and lower operating costs.

Engine/Power Train Integration

Electronically combines critical power train components to work more intelligently to optimize overall truck performance.

Brake System

Reliable braking with superior control gives the operator the confidence to focus on productivity.


Rugged Cat structures are the backbone of the 777D off-highway truck's durability.

Operator's Station

Ergonomically designed for operator comfort, superior control and high productivity.

Truck Body Systems

Cat designed and built for rugged performance and reliability in the toughest hauling applications.

Matched Systems

An efficient loading/hauling system starts with a perfect match.


Less time spent on maintenance means more more time on the haul roads.

Customer Support

Caterpillar dealers have what it takes to keep haul trucks productive.

777D Standard Equipment

Air Line Dryer

Alternator (100-amp)

Alarm, Back-up

Batteries, 190-amp hour, 12-volt (4)

Battery Disconnect Switch, ground level

Body Mounting Group

Body Safety Pins

Body Up Reverse Inhibitor

Braking System
  • Brake Disconnect Switch, front
  • Brake Heat Exchanger
  • Brake Release Motor for Towing
  • Oil-Cooled Multiple Disc Brakes (front/rear)
  • Parking Brake
  • Retarder
  • Secondary Brake

  • Coat Hook
  • Diagnostic Connector Port, 24-volt
  • Electronic Monitoring System III
  • Heater/Defroster, 7570 kCal (38,000 Btu)
  • Hoist Lever, finger tip-actuated
  • Horn, air
  • Insulated and Sound-Suppressed
  • Power Port, 24-volt
  • Product Link Ready
  • Radio Ready, 5-amp converter, speakers, antenna, wiring
  • Seat, Caterpillar Comfort, full air suspension
  • Seat Belts, 75 mm (3 in) wide retractable
  • Seat, Passenger
  • Steering Wheel, tilt, padded, telescopic
  • Storage Compartment
  • Sun Visor
  • Tinted Glass
  • Window, electric (operator)

Coolant, Extended Life, -35°C (-30°F)

Crankcase Guard

Driveline Guard

Electrical System, 24-volt

  • Cat 3508B Electronic Unit Injection
  • 8-Cylinder Diesel
  • Turbocharged
  • Aftercooled
  • Air Cleaner with Precleaner (2)
  • Automatic Cold Mode Idle Control
  • Electric Start
  • Engine Shutdown Switch, ground level
  • Starting Aid, Ether

Filters, Spin-on

  • Actual Gear Indicator
  • Air Cleaner Service Indicator
  • Air Pressure
  • Body Down Indicator
  • Brake Oil Temperature
  • Coolant Temperature
  • Engine Overspeed Indicator
  • Fuel Level
  • Hour Meter
  • Load Counter, automatic
  • Odometer
  • Speedometer
  • Tachometer

Lighting System
  • Auxiliary Jump Start Receptacle
  • Back-up Lights
  • Directional Signals and Hazard Warning, LED
  • Dome/Courtesy Light
  • Headlights, Halogen, with dimmer
  • Stop and Tail Lights, LED

Mirrors, right/left

Reservoirs (separate)
  • Brake/Converter/Hoist
  • Steering
  • Transmission/Torque Converter

Rims, 19.5 x 49

Rock Ejectors

Service Platform, bolt-on

Supplemental Steering, automatic

Tires, 24.00-35, radial

Tow Hooks, front

Tow Pin, rear

  • 7-Speed Automatic Power Shift, electronic control
  • Body-up Shift Limiter
  • Controlled Throttle Shifting
  • Directional Shift Management
  • Downshift/Reverse Shift Inhibitor
  • Economy Shift Mode
  • Engine Overspeed Protection
  • Reverse Neutralizer During Dumping
  • Neutral Coast Inhibitor
  • Neutral Start Switch
  • Programmable Top Gear Selection

Vandalism Protection Locks

Windshield Wipers and Washer, electric intermittent