Komatsu HD465-8, Operation & Maintenance Manual

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2.
Check that supply valve (1) of the fuel tank is opened.
3.
Move the switch for the fuel feed pump (2) to ON position.
Lamp (3) flashes and the fuel feed pump operates.
After the specified time (approximately 7 minutes), lamp
(3) goes out automatically and the fuel feed pump stops.
When lamp (3) goes out, air bleeding is completed.
4.
If the fuel circuit is empty after the machine stops due to
running out of fuel, or the fuel hose and tubes are serv-
iced, or the supply pump is replaced, perform the following
procedure.
1) After the fuel feed pump stops automatically (the lamp
goes out), immediately turn the fuel feed pump switch (2) to ON position again.
2) Check that lamp (3) has gone out.
5.
Start the engine.
6.
After the engine starts, run it for approximately 5 minutes to bleed all the air from the fuel circuit.
If the engine does not start, all the air may not be bled. Stop the engine, and repeat the operations of steps
4 to 7 again.
NOTICE
Keep away from the engine while it is being started and running.
Do not turn the start switch for more than 20 seconds.
Wait for 2 minutes before you turn start switch again.
REMARK
Move the switch for the fuel feed pump (2) to ON position, then the air bleeding starts automatically.
• The fuel feed pump is operated for 30 seconds, halted for 10 seconds. This cycle is repeated 10 times,
and it stops automatically.
The lamp (3) is flashing in the meanwhile.
• If the fuel feed pump switch (2) is moved to OFF position while the fuel feed pump is operated, the fuel
feed pump stops.
METHOD FOR CHECKING PLAY OF OUTPUT COUPLING OF OUTPUT SHAFT
k k
WARNING
To correctly park the machine, set the parking brake, stop the engine and chock the wheels.
If any unusual noise occurs around the output shaft (1) or front drive shaft (2), the rubber inside the output shaft
may be deteriorated or damaged, so check the play of coupling (3) as follows.
MAINTENANCE PROCEDURE MAINTENANCE
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