Komatsu PC1250-11 Original Instructions Manual page 196

MACHINE OPERATIONS AND CONTROLS
METHOD FOR DRAINING WATER MIXED IN AIR TANK
1.
Turn the air tank drain valve (1) on the bottom of the ma-
chine to OPEN position (O), and drain water from the air
tank.
2.
Turn the drain valve to CLOSE position (S) after the water
is drained.
METHOD FOR CHECKING WATER SEPARATOR, DRAINING WATER AND SEDI-
MENT
1.
Open the engine room door.
The water separator forms one unit with fuel prefilter (1).
2.
Check for water and sediment.
It is possible to judge the water level and amount of sedi-
ment by looking through the transparent cup (2).
NOTICE
If the water in transparent cup (2) freezes, wait until
the frozen water has melted completely, then follow
the procedure to drain the water.
3.
Place a container to catch the water under the drain hose
(3).
4.
Loosen the drain valve (4) and drain the water.
5.
When fuel starts to be drained from the drain hose (3), tighten the drain valve (4) immediately to stop drain-
ing.
Tightening torque:2.5 to 3.4 Nm {0.25 to 0.35 kgm}
If the drain valve (4) is hard to move, adjust it.
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OPERATION