Komatsu PC450-8 Operation & Maintenance Manual page 181

OPERATION
Check for Water and Sediment in Water Separator, Drain Water
1. Open the front engine hood.
2. The water separator forms one unit with fuel pre-filter (1).
3. It is possible to judge the water level and amount of sedi-
ment by looking through transparent cap (2). If there is any
water or sediment collected at the bottom, set a container
to catch the drain water under drain hose (3).
4. Loosen drain valve (4) and drain the water.
5. When fuel starts to drain from drain hose (3), tighten drain
valve (4) immediately.
Tightening torque: 0.2 to 0.45 Nm (0.02 to 0.046 kgm)
MACHINE OPERATIONS AND CONTROLS
3-115