HM400-5 Dump Trucks

SPECIFICATIONS

Engine

Model	Komatsu SAA6D140E-7
Type	Four-cycle, water-cooled, direct injection
Aspiration	Turbo-charged, after-cooled, cooled EGR
Number of cylinders	6
Bore x stroke	140 mm x 165 mm
Displacement	15.24 ltr
Horsepower, Gross - SAE J1995	353 kW / 473 HP
Horsepower, Net - ISO 9249 / SAE J1349	348 kW / 466 HP
Rated RPM	2000
Fan drive method	Hydraulic
Emissions certification	EPA Tier 4 Final

Axles

Full time all wheel drive with Komatsu Traction Control System (K-TCS)

Final drive type Planetary gear

Ratios:

Differential 3.727

Planetary 4.941

Body

Capacity, struck	18.2 m³
Capacity, heaped (2:1 SAE)	24 m³
Payload	40000 kg
Target area (inside length x width)	5667 mm x 3194 mm
Heating	Exhaust heating (option)
Material	130 kg/mm² high tensile strength steel
Material thickness:
Bottom	16 mm
Front	8 mm
Sides	12 mm

Brakes

Service brakes	Full-hydraulic control, oil-cooled multiple-disc type on front and centre axles
Standard	ISO3450
Parking brake	Spring applied, caliper disc type
Retarder	Front and centre axle brakes act as retarder

Cab

Standard
ISO3449 (FOPS)

ISO3471 (ROPS)
Hydraulic System

Hoist cylinder Twin, telescopic type

Relief pressure
28.4 MPa

290 kg/cm²

Hoist time 12.0 sec
Main Frame

Type
Articulated, box-sectioned construction on front and rear

Connected by strong torque tubes

Service Refill Capacities

Fuel tank	525 ltr
DEF tank	34.0 ltr
Engine oil	50 ltr
Torque converter, transmission and retarder cooling	125 ltr
Differentials (total)	108 ltr
Final drives (total)	32 ltr
Hydraulic system	167 ltr
Suspension (total)	21.4 ltr

Steering System

Type	Articulated type, fully hydraulic power steering with two double-acting cylinders
Supplementary steering	Automatically actuated, electrically powered
Standard	ISO5010 SAE J1511
Minimum turning radius, wall to wall	8.8 m
Articulation angle	45° each direction

Suspension System

Front Hydro-pneumatic suspension

Rear Combined hydro-pneumatic and rubber suspension system

Transmission

Torque converter	3-elements, 1-stage, 2-phase
Transmission	Full-automatic, countershaft type
Speed range	6 speeds forward and 2 reverse
Lockup clutch	Wet, single-disc clutch
Forward	Torque converter drive in 1st gear, direct drive in 1st lockup and all higher gears
Reverse	Torque converter drive and direct drive in all gear
Shift control	Electronic shift control with automatic clutch modulation in all gear
Maximum travel speed	55.9 km/h

Tyres

Standard tyre 29.5 R25

Weight (Approximate)

Empty and Gross Weight:

Empty weight	35005 kg
Gross vehicle weight	75135 kg

Weight Distribution:

Empty:
Front axle	56.9%
Centre axle	23.6%
Rear axle	19.5%
Loaded:
Front axle	30.4%
Centre axle	35.8%
Rear axle	33.8%

The HM400-5 is a 40-tonne capacity truck, powered by a new technology Komatsu engine and featuring our advanced truck transmission system, along with exclusive hydraulic braking and restarder systems for unrivalled traction, braking power and safety in all applications. As with all our trucks, key components are designed and manufactured by Komatsu to work together in an integrated package. And it comes standard with our Komtrax remote monitoring and location system, backed by our Australia-wide service and support network.

Tier 4 Engine KDPF Regeneration

348 kW / 466 HP
ENGINE POWER
75,135 kg
OPERATING WEIGHT
40,000 kg
PAYLOAD CAPACITY