Komatsu PC18MR-3, Operation & Maintenance Manual

Page: 218 / 284

MAINTENANCE PROCEDURES
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4.9.1.c CLEANING THE WATER SEPARATOR FILTER
WARNING
q
Change the filter after work, when the engine has cooled down to 40÷45°C.
q
During these operations some fuel may be spilled; clean the dirty areas immediately, in order to prevent
any risk of slipping or fire.
1. Open the radiator cover. (For details, see "3.2.7 RADIATOR
COVER").
2. Turn the valve (1) of the water separator to the closed
position (A).
3. Loosen the metal ring (2) with a filter wrench and remove the
casing (3) and the filtering element (5).
Take care not to lose the red ring (4) that is positioned inside
the casing.
4. Wash the inside of the casing (3) and the filtering element (5)
with diesel or flushing oil.
5. After washing, install the filtering element (5).
6. Place the red ring (4) in the casing (3) and fill it with fuel, then
put back the casing and tighten the metal ring (2).
Driving torque: from 14.7 to 19.6 Nm (from 1.5 to 2.0 kgfm).
7. Turn the decanting device valve (1) to the opening position
(B) and purge the air as indicated in section "4.9.6.b
CHANGING THE FUEL FILTER CARTRIDGE".
IMPORTANT
q
When removing the filter, be careful so as not to lose the
sump red ring.
q
If the filtering element is excessively clogged or damaged,
change it.