Komatsu D475A-5E0 Operation & Maintenance Manual page 144

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OPERATION
CHECK WATER SEPARATOR, DRAIN WATER AND SEDIMENT
1. Open the side cover on the left side of the machine.
The water separator forms one unit with the fuel prefilter and is
at the bottom.
2. It is possible to judge the water level and amount of sediment
by looking through transparent cup (2). If there is any water or
sediment collected at the bottom, set a container to catch the
drain water under drain hose (3).
3. Loosen plug (1) and drain the water.
4. When fuel comes out from drain hose (3), tighten plug (1)
immediately.
Tightening torque: 0.2 to 0.45 Nm (0.02 to 0.046 kgm, 0.1 to 0.3
lbft)
CHECK ADDITIONAL WATER SEPARATOR, DRAIN WATER
(if equipped)
(Machine of poor fuel arrangement specification)
The water separator is a device to separate water mixed with fuel. When draining water, fuel is drained together. Therefore,
never bring open flame near the draining water.
When draining water, prepare for a container used for draining oil and take care not to spill drained water. The drained water
contains fuel and can catch fire. If it is spilt, wipe it off completely.
NOTICE
If float (1) goes above level line (2), there is danger that the separated water
may be sucked into the engine.
Always drain the water before float (1) reaches level line (2).
REMARK
It is not abnormal though the float might incline if water has not
collected in the case.
Before performing this work, top off the fuel tank in reference to"CHECK FUEL LEVEL, ADD FUEL (PAGE 3-89)".
If the fuel is scarce, water may not well be drained.
Prepare a container to catch drain oil.
WARNING
OPERATION
3 - 91

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