Komatsu HM400 Articulated Dump Truck Dozer Specs Parts

Description:

Serial Number Information

The serial number plate is typically located on the left-hand frame rail or near the front articulation joint.

Use your serial number to identify compatible engine, drivetrain, and hydraulic components for model-specific fitment.

Key Specifications

Payload & Capacity

Hydraulic System

Key Features

High-Horsepower Performance

The Komatsu SAA6D140E-7 engine delivers 469 HP of power with responsive torque, excellent fuel economy, and clean Tier 4 Final emissions performance.

Massive Hauling Capacity

With a 44.1-ton payload and 30.3 cubic yard heaped volume, the HM400 is optimized for bulk haulage in rough terrain or long-distance runs.

Automated 7-Speed Transmission

Smooth gear transitions and efficient power delivery come standard via the 7-speed automatic transmission, reducing operator fatigue on long hauls.

Robust Ground Clearance & Articulation

A 22.4-inch clearance paired with an articulated chassis allows for operation on uneven surfaces without compromising stability or ride quality.

Common Replacement Parts

Keep your HM400 operating efficiently with durable parts available at Broken Tractor:

Engine Components

Fuel filters, turbochargers, air filters, DEF injectors, thermostats

Transmission & Driveline

Transmission rebuild kits, clutch packs, output shafts, torque converters

Hydraulic System

Dump body lift cylinders, hydraulic pumps, valve blocks, return lines

Chassis & Suspension

Articulation joint bushings, oscillation pins, steering cylinders, suspension cylinders

Cab & Electrical

Display monitors, joystick controls, seat assemblies, ignition modules

Maintenance Schedule