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4.11 Maintenance procedure
Every 500 hours service
Prepare a filter wrench and a container to catch the fuel.
1. Close valve (5) at the bottom of the fuel tank.
2. Set the container to catch the fuel under the filter cartridge.
3. Loosen drain valve (6), then drain all the water and sediment
in the water separator and also the fuel accumulated in filter
cartridge (1)
4. Disconnect electrical connector. To prevent water from get-
ting on the connector, wrap it in a vinyl bag and keep it in a
safe place until it is installed again.
5. Using a filter wrench, turn water separator (3) counterclock-
wise to remove it.
6. Using a filter wrench, turn filter cartridge (1) counterclock-
wise to remove it.
7. Install new filter cartridge (1) to wather separator (3).
NOTE
When installing water separator (3), coat the packing surface
thinly with oil, bring the packing surface into contact with the
seal surface of filter cartridge (1), then tighten a further 1/4 -
1/2 turns.
NOTE
Always tighten the water separator (3) by the specified
angle. If the water separator is tightened too far, the packing
will be damaged and this will lead to leakage of fuel. If it is
not tightened enough, fuel will leak through the gap at the
packing.
8. Clean the filter holder, fill new filter cartridge (1) with clean
fuel, coat the packing surface thinly with oil, then install the
filter cartridge to the filter holder.
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. If
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 at the packing.
Always use KOMATSU genuine cartridge for filter cartridge
(1).
4-76
2
1
3
PW180-7E0 – VEAM400102
Maintenance
5
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