O
PERATOR
E
NVIRONMENT
HM400
-2
ARTICULATED DUMP TRUCK
HM400
-2
A
R T I C U L A T E D
D
U M P
T
R U C K
Built-in ROPS/FOPS cab
These structures conform to ISO 3471-1994 standard.
Hydro-pneumatic suspension for all terrains
The hydro-pneumatic suspension assures a comfortable ride
even over rough terrain and ensures maximum productivity
and operator confidence.
Viscous cab mounts
Viscous mounts reduce the noise transmitted to the cab and
achieve a quiet 76 dB(A) noise level
Air suspension seat is standard
The air suspension, fabric-covered seat which is adjustable
to the operator’s weight is provided as standard. The air
suspension seat dampens vibrations transmitted from the
machine and reduces operator fatigue as well as holding the
operator securely to assure confident operation.
Electric body dump control lever
The low effort lever makes dumping easier than ever.
Supplementary steering and secondary brakes
Supplementary steering and secondary brakes are standard
features.
Steering: ISO 5010-1992, SAE J1511
Brakes: ISO 3450-1996
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Low-noise designed cab
Integrated cab and floor provide airtight cab. Engine room is
also sealed. The low noise and sound insulated muffler
/exhaust pipe contribute to reducing sound levels.
All these together offer a quiet and comfortable operator
environment.
Wide, spacious cab with excellent visibility
The wide cab provides a comfortable space for the operator
and a full size buddy seat. Large electrically operated window
and the operator’s seat positioned to the left side ensures
superior visibility.
Ergonomically designed cab
The ergonomically designed operator’s compartment makes
it very easy and comfortable for the operator to use
all the controls. The result is more confident operation
by operators and greater productivity.
The front under view mirrors are increased to two from one,
and the rear view mirrors increased to four from two.
Newly employed laminated glass in the windshield assures
safe operation. In addition, electric heated rear window facili-
tates defrosting.
Easy-to-see instrument panel
The instrument panel makes it easy to monitor critical
machine functions. In addition, a caution light warns the
operator of any problems that may occur. This Komatsu
on-board monitoring system makes the machine very friendly
and easy to service.
Steering wheel and pedals
Low effort pedals reduce operator fatigue when working
continuously for long periods. The tiltable, telescoping steering
column enables operators to maintain the optimum driving
position at all times.
Komatsu has developed a state-of-the-art, wide comfortable cab. The low level of
vibration and noise ensure maximum productivity from the operator.
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