● Oil-cooled multiple-disc brakes
and fully hydraulic-controlled
braking system
● Electric circuit breakers
● Vehicle Health Monitoring System
(VHMS)
● Remote mounted transmission
Photos may include optional equipment
3
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HD1500-7
O FF-HIGHWAY T RUCK
RODUCTIVITY &
P
High Performance Komatsu SDA12V160 Engine
The Komatsu SDA12V160 engine provides the highest
horsepower in it’s class. With 1487 gross horsepower, this
engine delivers faster acceleration and higher travel speeds
with a high horsepower-to-ton ratio. High torque at low
speed, impressive acceleration, and low fuel consumption
ensure maximum productivity. Standard features of this
engine include the Quantum electronic control system,
Cummins Cense monitoring and pre-lubrication.
Komatsu’s seven-speed, electronically controlled, automatic
powershift transmission uses a rubber damper to
comfortably reduce harmful engine shock and vibration to
the transmission. A lock-up system, consisting of a wet
multiple-disc clutch, is actuated in F1-F7 gears for higher
fuel savings. Electronic shift control with automatic clutch
modulation in all gears and full diagnostics with memory.
The transmission circuit uses a separate hydraulic circuit
and cooler.
Komatsu torque converter is transmission-mounted and
lock-up clutch is electronically controlled.
Maximum travel speed (empty, 2% rolling resistance)
Gear 111.0 km/h 6.8 mphGear 532.7 km/h 20.3 mph
Gear 214.7 km/h 9.1 mphGear 644.2 km/h 27.5 mph
Gear 319.7 km/h 12.2 mph Gear 758.4 km/h 36.3 mph
Gear 424.5 km/h 15.2 mph Reverse 9.4 km/h 5.8 mph
EATURES
F
4
Four-Wheel, Oil Cooled, Multiple Disc Brakes
The HD1500-7 is equipped with four wheel, oil cooled,
multiple disc brakes which provide the greatest retarding
capabilities in its class. Effective and smooth braking
characteristics are controlled through the retarding lever by
a system of pressure proportioning valves (PPC), which
precisely meter the appropriate amount of hydraulic
pressure to each brake assembly. The elimination of an air
system, common with dry disc brakes, improves reliability
and reduces maintenance costs.
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OFF-HIGHWAY TRUCK
HD1500-7
Auto Retard Speed Control (ARSC)
ARSC allows the operator to simply set the downhill travel
speed and go down slopes at a constant speed. This allows
the operator to concentrate on steering. The speed can be
set at increments of 1 km/h 0.6 MPH per click
(±5 km/h 3.1 MPH of setting speed adjustment) to match
the optimum speed for the slope. The retarder cooling oil
temperature is constantly monitored and the descent speed
is automatically reduced, if necessary.
AUTO RETARD
SPEED CONTROL
CANCEL
Go down
slope at
constant
speed
UP
SET
DOWN
Automatic Idling Setting System (AISS)
This system facilitates quick engine warm-up and cab
cooling/warming. When setting the system ON,
engine idle speed is kept at 1000 rpm when
coolant temperature is 30°C 86°F or lower.
Speed automatically returns to 650 rpm when
coolant temperature goes above 30°C 86°F.
Small Turning Radius
The MacPherson strut type front suspension has a special
A-frame between each wheel and
the main frame. The wider
space created between the
front wheels and the main
frame increases the
turning angle of the
wheels. The larger this
turning angle, the smaller
the turning radius of the truck.
Photos may include optional equipment
5
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HD1500-7
O FF-HIGHWAY T RUCK
Long Wheelbase and Wide Tread
With an extra-long wheelbase, a wide tread, and an
exceptionally low center of gravity, the HD1500-7 hauls its
oad at higher speed for greater productivity, and delivers
l
superior driving comfort over rough terrain.
Large Body
A wide target area makes for easy loading with minimal
spillage and more efficient hauling.
Heaped capacity : 78.0 m
Target area (inside length x width) :
3
102.0 yd
7670 mm 25'2" x 5705 mm 18'8"
3
Advanced K-ATOMiCS
The electronically controlled all clutch modulation system,
“K-ATOMiCS”, optimizes the clutch engagement oil pressure
at every gear.This system optimizes the clutch lock-up
process for smoother shifting with minimal torque shock.
“Skip-shift” function
When driving uphill, the skip-shift function automatically
selects the gear according to the slope of the grade. It
reduces the number of down-shifts, makes the driving
smoother, improves the operator’s comfort, and reduces
spilling of material.
Rear LED Lighting Rack
Frame mounted LED lighting rack at the rear of the truck
provides tail, brake, and flasher lights. In addition, this
bracket, protected from falling objects by the body
structure, includes the reverse horn and back-up lights.
Push Button Actuated Auxiliary Brake
All four wet disc brakes are activated when the auxiliary
brake button, located on the dash board, is deployed.
In addition, the brakes will
automatically apply when the
hydraulic pressure drops
below the specified level.
Supplementary Steering
Automatic supplementary steering is provided as a standard
feature.
6
The MacPherson Strut-Type Front Suspension
The MacPherson-type independent suspension is utilized
on the front wheels. This linkage arrangement allows the
front wheel to follow the undulation of the road surface
smoothly, realizing excellent riding comfort.
Page 7
OFF-HIGHWAY TRUCK
HD1500-7
PERATOR
O
Spacious Cab with Excellent Visibility
The HD1500-7 cab inherits the superior design features of
Komatsu's ultra-class haul trucks. Wide windows in the
front, side and back, plus plenty of space in the richly
upholstered interior, provide a quiet, comfortable
environment for better visibility and control over every
aspect of the operation.
Ergonomically Designed Cab
The comfortable and ergonomically-designed operator's
compartment makes it very easy for the operator to reach
all controls. The result is more confident operation and
greater productivity.
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. Problems are
recorded in the monitor and indicated as service codes.
This makes the machine more user friendly and easier to
service.
NVIRONMENT
E
Vehicle Health Monitoring System (VHMS)
VHMS controller monitors the health conditions of major
components and enables remote analysis of the machine
and its operation. This process is supported by the Komatsu
istributors, factory, and design team.
d
Satellite
communication (Option)
Customer
OMATSU
K
Internet
WebCARE Server
Komatsu
distributors
Ideal Driving Position Settings
The 5-way adjustable operator seat and the tilt-telescopic
steering column provide an optimum driving posture for
increased driving comfort and more control over machine
operation. The suspension seat dampens vibrations
transmitted from the machine and reduces operator fatigue
as well as holding the operator securely. A 78 mm 3" wide
seat belt is provided as standard equipment.
job site
Personal
computer
terminal
(for downloading
data)
Photos may include optional equipment
7
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HD1500-7
O FF-HIGHWAY T RUCK
Automatic Spin Regulator (ASR)
ASR automatically maximizes traction by preventing the
rear tires from slipping on either side.
Integral Four-Post ROPS/FOPS Cab Structure
(Level 2)
Wet multi-disc brakes and fully hydraulic
controlled braking systems realize lower maintenance
costs and higher reliability. Wet disc brakes are fully sealed
to keep contaminants out, reducing wear and maintenance.
Brakes require no adjustments for wear, meaning even lower
maintenance.
Service brake and retarder are isolated from the other truck
hydraulic functions to ensure reliable performance. The
parking brake is a spring applied, oil released, 3 caliper dry
disc mounted on the input yoke to the differential. Fully
hydraulic braking systems eliminate the air system; air
bleeding is not required, and water condensation that can
lead to contamination, corrosion, and freezing is eliminated.
Automatic Lubrication System
The Lincoln Auto-lube system
features a deck mounted canister,
ground level refill point, and an
adjustable timer to ensure all pivot
points are properly greased.
Body Dump System
Two 3-stage cylinders with
new concept design and
sealing system. Internal
cushion valve and overcenter damping provide
smooth, reliable dumping.
The quill design modulates
the body return speed after
dumping to manage forces
into the frame and
suspensions.
Hoist times
Power Up: 15 sec
Power Down: 15 sec
8
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OFF-HIGHWAY TRUCK
DASH-7 FEATURES
HD1500-7
Komatsu Components
Komatsu manufactures the torque converter,
transmission, hydraulic cylinders, and electrical parts on this
dump truck. Komatsu dump trucks are manufactured with an
integrated production system under strict quality control
system guidelines.
High-Rigidity Frame
Front support is integrated
with the frame. The frame
rigidity has been
substantially increased. As
a result, flexural rigidity and
torsional rigidity, which are
indicators of drivability and ride
quality, are significantly improved.
Rugged and Durable Dump Body Design
The standard dump body is made of high-tensile-strength
steel with a Brinell hardness of 400 for excellent rigidity
and reduced maintenance
cost. The side and bottom
plates of the dump section
are reinforced with ribs for
added strength.
Reliable Hydraulic System
A large capacity oil cooler is installed in each hydraulic
circuit, improving the reliability of the hydraulic units during
sudden temperature rises. Further, in addition to the main
filter, a β
the transmission control valve. This system helps prevent
secondary faults.
Flat Face-to-Face
O-Ring Seals
Flat face-to-face O-ring
seals are used to securely
seal all hydraulic hose
connections and to prevent
oil leakage.
10 = 3 (min) line filter is located at the entrance to
Nipple
Hose
O-ring
Sealed DT Connectors
Main harnesses and
controller connectors are
equipped with sealed DT
connectors providing high
reliability, water resistance,
and dust resistance.
Protection Function Supported by Electronic Control
ItemFunction
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, limiting potential over-runs.
When descending grades, if the vehicle’s speed surpasses the maximum for the current gear, the front and rear brakes
automatically operate, limiting potential 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/hr 2.5mph.
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.
To determine travel performance: Read from gross weight down to the percent of total resistance. From this weight-resistance point,
read horizontally to the curve with the highest obtainable speed range, then down to maximum speed. Usable rimpull depends upon
traction available and weight on drive wheels.
BRAKE PERFORMANCE
To determine brake performance: These curves are provided to establish the maximum speed and gearshift position for safer
descents on roads with a given distance. Read from gross weight down to the percent of total resistance. From this weight resistance
point, read horizontally to the curve with the highest obtainable speed range, then down to maximum descent speed the brakes can
safely handle without exceeding cooling capacity.