Komatsu PC210-10 DEMOLITION BASE SPEC., Operation & Maintenance Manual

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OPERATION MACHINE OPERATIONS AND CONTROLS
3–147
ADJUSTING DRAIN VALVE
Adjusting drain valve:PC220-AEB4-270K00A
If drain valve (4) is stiff, coat the O-ring portion of the drain valve with grease to make the movement smooth.
1. Turn the valve (6) at the bottom of the fuel tank to the
CLOSE position (S).
2. Set the container to catch the fuel under the pre-filter car-
tridge.
3. Loosen drain valve (4), then drain all the water and sedi-
ment in the transparent cap (2) and also the fuel accumu-
lated in filter cartridge (1).
4. Check that nothing more comes out from drain hose (3),
then remove drain valve (4).
5. Coat O-ring portion (7) with a suitable amount of
grease.When doing this, be careful not to let the grease get
stuck to the drain valve water drain port (8) or drain valve
thread (9).
6. Tighten drain valve (4) by hand until it contacts the bottom
of transparent cap (2).
7. Remove the fuel container.
8. Turn the valve (6) at the bottom of the fuel tank to the OPEN
position (O).
REMARK
For details of bleeding air, see "REPLACE FUEL PRE-FILTER CARTRIDGE (4-49)" or "REPLACE FUEL MAIN
FILTER CARTRIDGE (4-62)".