Komatsu HD465-8, Operation & Maintenance Manual

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METHOD FOR SHIFTING GEARS
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WARNING
• When traveling or when traveling downhill, never set
the gear shift lever to NEUTRAL position (N). Always
keep it in a speed range while traveling.
• If the gear shift lever is set to NEUTRAL position (N)
while the machine is traveling at the travel speed of
4 km/h or higher {2.5 MPH or higher} or traveling
downhill, the gear speed is not changed to neutral.
The centralized warning lamp flashes and the alarm
buzzer sounds. Always set the gear shift lever in D to
L position while traveling.
• If the gear shift lever is shifted to NEUTRAL position
(N) during traveling or traveling downhill, the engine
brake is disabled and steering operation becomes
heavy. In addition, there will be insufficient cooling oil
for the retarder, and there will be hazard of overheat-
ing or defective operation of the brakes.
• There may also be damage to the transmission or oth-
er parts of the power train, and there is danger of un-
expected accidents.
NOTICE
• When switching the direction (FORWARD or REVERSE), stop the machine completely and run the
engine at low idle, then select the direction of travel.
After moving the gear shift lever, do not accelerate until it is detected that the transmission clutch is
engaged.
• Do not operate the gear shift lever with the accelerator pedal depressed.
This will cause a big shock, and will also reduce the service life of the machine.
Set the gear shift lever (1) to a desired position.
This machine is equipped with automatic transmission, so the
transmission will shift automatically to match the travel speed.
If the dump body is not completely lowered, the gear speed is
fixed at 1st anywhere the gear shift lever position is in D to L.
The reverse travel is not available when the gear shift lever is
in R position and the gear speed is fixed at NEUTRAL. Keep
the dump body lowered when traveling.
• When upshift (acceleration)
Depress the accelerator pedal (2) gradually to accelerate
the machine.
The lockup clutch is engaged and the direct drive starts.
If the machine is accelerated further, the transmission au-
tomatically shifts up.
MACHINE OPERATIONS AND CONTROLS OPERATION
3-180