O
PERATOR
E
NVIRONMENT
OFF-HIGHWAY TRUCK
HD325-6
3
Nitrogen gas
Oil
Sturdy, refined frame
Cast-steel components are
employed in the main frame in
critical areas where loads and
shocks are most concentrated.
Rigorous dump body design
The standard dump body is made of 130 kg/mm
2
184,900 ps
high-tensile-strength steel for excellent rigidity and reduced
maintenance cost. The V-
shape design also increases
structural strength. The side
and bottom plates of the dump
section are reinforced with ribs
for added strength.
Reliable hydraulic system
The oil cooler is installed below the retarder, improving the
reliability of the hydraulic system during sudden temperature
rises. Further, in addition to the main filter, a 52-micron line
filter is set at the entrance to the transmission control valve.
This system helps prevent secondary faults.
Excellent footwork and durable power train
By adopting electronic modulation on all levels, peak torque when
shifting is reduced, raising the endurance of the power train.
Electronic devices for excellent operation
In the harness connection, a dual-lock connector is used to
prevent loosening from vibrations and contact failure. Also,
the base boards for controllers and other devices are fixed
by molding (with resin) , realizing high water, dust and vibra-
tion resistance.
E
XCELLENT
R
ELIABILITY AND
D
URABILITY
Protection functions supported by electronic control
Item
Function
Downshift inhibitor
Over-run inhibitor
Reverse inhibitor
Forward/Reverse shift inhibitor
Anti-hunting system
Neutral safety
Even if the driver downshifts accidentally,a speed appropriate to the current gear is automatically set,preventing over-runs.
The vehicle is prevented from moving backward when operating the body.
This device makes it impossible to shift from forward to reverse when the vehicle
,
s speed surpasses 4 km/hour.
When running near a shift point,smooth automatic shifting takes place.
The engine is prevented from starting when the shift lever is not in neutral.
When descending grades,if the vehicle
,
s speed surpasses the maximum for the current gear,
the rear brakes automatically operate,preventing over-runs.
K-ATOMiCS with “Skip-shift” Function
An electronically controlled valve is provided for each clutch
pack in the transmission for independent clutch engagement/
disengagement. It enables an ideal change in clutch modula-
tion pressure and torque cut-off timing in response to travel
conditions. This system and newly added “skip-shift” function
ensure smooth shifting and responsive acceleration.
“Skip-shift” function
Optimum travel speed automatically selected in response to
angle of ascent.
Reduced frequency of
shift downs and
smoother operation are
provided.
Hydropneumatic suspension
All four wheels have hydropneumat-
ic suspension with a fixed throttle
damper control valve that greatly
reduces pitching, rolling and
bouncing over rough terrain.
Ideal driving position
settings
The 5-way adjustable operator seat and the tilt-telescopic
steering column create an optimum driving posture, for
increased driving comfort and more control over the
machine’s operations.
See everything in quiet comfort
Wide windows in the front, side and back, plus plenty of
space in the richly upholstered interior, give you a quiet,
comfortable environment from which to see and control every
aspect of your work.
F4
F4
Shift hold
F4
Shift down
F1
F4
F4
Shift down
F3
F3
Shift down
F2
F2
Shift down
F1
Skip-shift
Current
Cast steel
