Komatsu PC22MR-3, Operation & Maintenance Manual

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MAINTENANCE PROCEDURES
MAINTENANCE
4-54
Bleeding the fuel circuit
WARNING
The engine may start during the bleeding operations;
make sure that there is no one near the machine.
1. After filling the fuel tank, make sure that the valve (1) of the
filter is in open position (B).
2. Turn the ignition key to position ON and wait approximately
15-20 seconds, in such a way as to allow the fuel system to
be automatically bled.
3. Turn the ignition key to position START and start the
engine.
NOTICE
q
If the engine starts regularly and then stops or
functions irregularly, check if there is air in the circuit;
in this case, check the tightness of the fuel filter and of
the fuel pump prefilter.
q
When all the fuel in the tank has run out, bleed the
circuit by proceeding as described above and repeat
the operation at least twice.
WEAM014500