Komatsu HD785-8 Off-Highway Truck

Komatsu HD785-8 Off-Highway Truck

Komatsu HD785-8 Off-Highway Truck Information

Download Komatsu HD785-8 Off-Highway Truck Product Brochure

The HD785-8 is a Tier 4 Final compliant rigid frame haul truck with a rated payload of 101.6 US tons designed for high production mining, quarry, and aggregate applications. Oil cooled, multiple-disc brakes on all four wheels provide excellent retarding capability for downhill travel while the Komatsu SAA12V140E-7 engine outputs 1,140 net horsepower for high productivity on grade. The McPherson strut type front suspension allows the HD785-8 to have a tight turning radius of 33’2” for excellent maneuverability when spotting or positioning to dump. Komatsu Traction Control (KTCS) is standard on the HD785-8 and provides optimum traction in various ground conditions. The new cab with upgraded trainer seat keeps operators comfortable throughout long shifts, and access is made simple with the standard diagonal angled stairway. Standard KomVision all around monitoring system provides the operator with a 360-degree bird’s-eye view utilizing a 6-camera system on a dedicated display.



  • Air cleaner, double element with restriction indicator (qty 2)
  • Auto Idle Shutdown
  • Automatic Idling Setting System (AISS)
  • Electric priming fuel pump
  • Engine, KOMATSU SAA12V140E-7, 12 cylinder, turbocharged, after cooled, EGR cooled, diesel
    Gross HP: 1200 HP (895 kW) / 1900 RPM (SAE J1995)
    Net HP: 1140 HP (849 kW) / 1900 RPM (ISO 9249 / SAE J1349)
  • Engine pre-lubrication system
  • Engine secondary shutdown switch
  • Fan, hydraulically driven, reversible
  • Komatsu diesel particulate filter (KDPF) (qty 2)
  • Radiator, lead free, modular core


  • Alternator, 140 amp, 24 volt
  • Back-up alarm
  • Batteries, 4 x 12V
  • Battery isolator
  • Electric circuit breakers, 24V
  • Emergency stop switch, ground level
  • Horn, electric
  • Lights
  • Access ladder lamps
  • Back-up Lamps, rear
  • Engine compartment lamp
  • Fog lamps
  • Head lamps, high and low beam, LED
  • Side working lamps, LH & RH, LED
  • Stop and tail Lamps, LED
  • Turn signals, hazard warning, front & rear, LED
  • Starter isolator
  • Starting motors, 2 x 11.0 kW, electric


  • 7-speed transmission, fully automatic, (7F, 2R)
  • Brake cooling oil recovery tank
  • Brakes, oil cooled, multiple disc, hydraulically controlled, front & rear
  • Komatsu Traction Control System (KTCS)
  • Neutral coast inhibitor
  • Parking brake, integrated in front & rear brakes
  • Retarder, automatic & manual
  • Secondary brake, pedal actuated, variable
  • Skip shift function
  • Speed limiter
  • Torque converter with electronic lockup control


  • Cab with built-in ROPS/FOPS (ISO 3471/ISO 3449)
  • 12V outlet (qty 2)
  • Automatic climate control system with cab pressurization
  • Body hoist control, electric
  • Cigarette lighter and ashtray
  • Cup holder
  • Door, LH & RH
  • KomVision camera system with dedicated monitor
  • Machine monitor with 7″ color LCD display
  • Mode selection system with Variable Horsepower Control (VHPC)
  • Operator seat, air suspension, heated, ventilated with 3-point 3″ retractable seat belt
  • Power windows, LH & RH
  • Radio, AM/FM with aux input, USB, & bluetooth
  • Rearview mirror, outside cab mount, heated (qty 2)
  • Rearview monitoring system with dedicated monitor
  • Secondary steering, automatic & manual
  • Steering wheel, tilt and telescopic
  • Sunvisor (qty 2)
  • Tinted glass with electric defogger
  • Trainer seat with 3″ retractable lap belt
  • Underview mirror
  • Wiper/washer, windshield (intermittent)
  • Diagonal access stairway


  • Cab & platform guard
  • Catwalk with handrails, skid resistant
  • Driveline guards, front & rear
  • Engine side covers
  • Engine underguard
  • Exhaust thermal guard
  • Fire safety shield (located behind engine)
  • Mud flaps
  • Rock ejector bars
  • Transmission underguard


  • Anchor points, tie off type (ISO 14567)
  • Automatic Retard Speed Control (ARSC)
  • Dump counter
  • Ecology guidance and ecology gauge
  • Fast fill coupler for fuel tank
  • Filler cap lock & cover lock
  • Ground level service center
    -Centralized KOWA sampling
    -Fluids ports
    Transmission, engine, brake control, steering and hoist oil
  • Hydropneumatic Suspension, Front & Rear
  • Jump start receptacle
  • KOMTRAX Plus®
  • Machine immobilization switch
  • Overload prevention system
  • Overrun warning and prevention
  • Overturn warning system
  • Payload meter
  • PM service connectors
  • Rims for 27.00 R49 tires with large bore valve stems (qty 6)
  • Safety pins (qty 2)
  • Wheel chocks (qty 2)



  • Dump body, 78.5 yd3
  • Steel liners for rock body (78.5 yd3)
  • Body heating kit


  • Michelin XDR2B (qty 6)
  • Bridgestone VMTP (qty 6)


  • Cold weather package (electric heaters for engine oil & coolant heater)


HORSEPOWER1,200 @1900 rpm


CAPACITY101.6 U.S. tons

List of Features

* Price, if shown, is Manufacturer's Suggested Retail Price (MSRP) and does not include government fees, taxes, dealer freight/preparation, dealer document preparation charges or any finance charges (if applicable). MSRP and/or final actual sales price will vary depending on options or accessories selected.
Contact A Sales Professional
Manufacturer Komatsu
Category Trucks
Subcategory Mechanical
Model HD785-8
Condition New
Year 2021
Hours 0
Financing calculator
Vehicle price ($)
Interest rate (%)
Period (month)
Down Payment ($)
Monthly Payment
Total Interest Payment
Total Amount to Pay