Komatsu D155A-6 Operation & Maintenance Manual page 318

MAINTENANCE MAINTENANCE
NOTICE
Do not fill the new filter cartridge with fuel.
Remove cap (B) and install the filter cartridge.
4. Clean the filter holder, coat the packing surface of the new filter cartridge thinly with oil, then install the filter
cartridge to the filter holder.
5. When installing, tighten until the packing surface contacts the seal surface of the filter holder, then tighten it 3/4
of a turn.
If the filter cartridge is tightened too far, the packing will be damaged and this will lead to leakage of fuel. If the
filter cartridge is too loose, fuel will also leak from the packing, so always tighten the correct amount.
6. After filter cartridge (2) has been replaced with a new one, bleed air from the cartridge in reference to "BLEED
AIR FROM FUEL CIRCUIT (PAGE 4-50)".
REMARK
When only the filter cartridge is replaced, it is suffficient that air bleeding is carried out for the filter head alone. But
when the fuel piping is removed, air bleeding should also be carried out for the injection pump air-bleeding valve.
SERVICE PROCEDURE SERVICE PROCEDURE
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