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Maintenance
NOTE
When installing filter cartridge (1), bring the packing surface
into contact with the seal surface of filter holder (2), then
tighten a further 3/4 turns.
Always tighten filter cartridge (1) by the specified angle. I f
the filter cartridge is tightened too far, the packing will be
damaged and this will lead to leakage of fuel. If it is not tight-
ened enough, fuel will leak through the gap in the packing.
Always use a KOMATSU genuine cartridge for filter cartridge
(1).
5. After completing replacement of filter cartridge (1), then
bleed the air.
When bleeding the air, carry out the procedure in steps 6 - 9.
6. Open valve (3) at the bottom of the fuel tank.
7. Fill the fuel tank with fuel (to the position where the float is at
the highest position).
8. Loosen the knob of feed pump (2), pull it out, then pump it in
and out until the movement becomes heavy.
After the engine runs out of fuel, use the same procedure to
operate feed pump (2) and bleed air.
9. Push in the knob of the feed pump (2) and tighten it.
10. After replacing filter cartridge (1), start the engine and check
that there is no leakage of fuel from the filter seal surface.
Check all tightening points of engine exhaust pipe clamps
Please ask your KOMATSU distributor to check the tightening of
the clamps between the air cleaner – turbocharger – aftercooler
– engine.
PW180-7E0 – VEAM400102
4.11 Maintenance procedure
Every 1000 hours service
2
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