Komatsu HD325-8, Operation & Maintenance Manual

Page: 387 / 464

METHOD FOR CHECKING PARKING BRAKE PERFORMANCE
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WARNING
If the machine moves when the braking capacity is being checked, it may lead to serious personal injury
or death.
If the machine moves, lower the engine speed immediately, return the gear shift lever to NEUTRAL posi-
tion (N), and depress the foot brake.
NOTICE
• When checking, be sure to select “F2” in “F1 Start at D Position Setting”, and then set the gear shift
lever to the position D. Neglecting this can damage the inside of the transmission.
• Make the dump body seated securely before the inspection. Check that the dump body float caution
lamp is not lit.
When the dump body is not seated and the parking brake is at “TRAVEL”, the gear speed is “F1”
while the gear shift lever is at the position “D”.
1.
Check that “F2” is selected on “F1 Start at D Position Set-
ting” of user menu of the machine monitor.
2.
Set the parking brake switch (1) to “PARKING” position on
a flat ground.
3.
Set the gear shift lever (2) in the position D and increase
the engine speed gradually.
If the machine does not move when the engine speed is
increased to 1600 rpm, it is normal.
If any problem is found, ask your Komatsu distributor for
repair.
4.
Decrease the engine speed and set the gear shift lever to
NEUTRAL position (N).
METHOD FOR CHECKING AND CLEANING AUTOMATIC SUSPENSION
(if equipped)
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WARNING
Always observe the following.
• One worker must always sit on the operator's seat and
be ready to stop the engine at any time. All workers
must maintain contact with the other workers.
• Set the parking brake switch to “PARKING” position
(A), so that the machine does not move.
• Do not touch the gear shift lever. Always give a signal
to your fellow workers to evacuate them to a safe
place always when it is necessary to operate the dump
levers.
MAINTENANCE MAINTENANCE PROCEDURE
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