Komatsu D375A-8, Operation & Maintenance Manual

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2.
Place a container to catch fuel under the filter cartridge (3).
3.
Turn the filter cartridge (3) counterclockwise by using the
filter wrench, and remove it.
4.
Clean the filter head. Thinly apply oil to the packing of the
new filter cartridge.
5.
Remove the filter cartridge cap (C) and install it to the filter
head.
NOTICE
• Do not fill the new filter cartridge with fuel.
• Cap (C) is used to prevent the entry of dirt or dust
into the filter cartridge.
6.
When installing the cartridge, tighten it until the packing
surface contacts the sealing surface of the filter head, then
tighten it 3/4 of a turn.
REMARK
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 tightened too loose, fuel will also leak from the
packing, so always tighten to the specified angle.
7.
Open the fuel supply valve (1) of the fuel tank.
(S): CLOSE
(O): OPEN
8.
After completing the replacement of the fuel filter cartridge
(3), bleed air from the fuel circuit.
See “METHOD FOR BLEEDING AIR FROM FUEL CIR-
CUIT”.
9.
After bleeding air from the fuel circuit, start the engine.
10. Check that no fuel leaks through the filter sealing face.
If any fuel leaks, check the filter cartridge for its tightening condition.
If fuel still leaks, repeat steps 1 to 3 to remove the filter cartridge, and if any damage or pinched foreign
material on the packing surface is found, replace it with a new cartridge and repeat steps 2 to 6 to install it.
MAINTENANCE MAINTENANCE PROCEDURE
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