Komatsu PW118MR-11 Operation & Maintenance Manual page 224

MACHINE OPERATIONS AND CONTROLS
4.
Open drain valve (3) to discharge the sediment and water
in the bottom together with the fuel.
Be careful not to get fuel on yourself.
5.
When clean fuel flows out, close drain valve (3).
6.
Return cover (1) to its original position and fix it with bolt
(2).
METHOD FOR CHECKING WATER SEPARATOR, DRAINING WATER AND SEDI-
MENT
1.
Open the rear right side cover.
2.
Check for water and sediment.
The water separator forms one unit with fuel prefilter (1).
It is possible to judge the water level and amount of sedi-
ment by looking through transparent cup (2).
If there is water or sediment accumulated, drain it accord-
ing to steps 4 to 6.
NOTICE
If the water inside transparent cup (2) freezes, wait un-
til the frozen water has melted completely, then follow
the procedure to drain the water.
REMARK
• If the transparent cap (2) is dirty or it is difficult to see the inside, clean transparent cap when replacing
fuel prefilter cartridge (1).
• When the drain valve (3) has been removed during the cleaning operation, coat O-ring with grease and
tighten until it contacts the bottom.
3.
Insert a drain hose (4) on the valve.
4.
Place a container under the drain hose (4) to collect the water.
5.
Loosen the drain valve (3) and drain the water.
6.
When fuel starts to drain from drain hose (4), tighten drain valve (3) immediately.
Adjustment of drain valve
If drain valve (3) is stiff, coat O-ring of the drain valve with grease to make the movement smooth.
1.
Turn the valve (5) to CLOSE position (S).
2.
Place a container under the fuel prefilter cartridge to catch the fuel.
3.
Loosen the drain valve (3) and drain the water and sediment from the transparent cup (2), and also drain all
the fuel accumulated in the filter cartridge (1).
4.
Check that nothing more comes out from the drain hose
(4), then remove the drain valve (3).
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OPERATION
RKA63440
RKA63500
RKA63501