Komatsu WA200-8 Operation & Maintenance Manual page 202

MACHINE OPERATIONS AND CONTROLS
5.
When fuel starts to be drained from drain hose (5), tighten plug (6) immediately to stop draining.
Tightening torque: 0.2 to 0.45 Nm {0.02 to 0.046 kgm}
REMARK
• On this machine, a sensor is installed to detect if water accumulates in transparent cup (3).
When the water separator caution lamp (4) lights up in red on the machine monitor, it indicates that
water is accumulated in transparent cup (3).
In this case as well, use the procedure above to drain the water.
• When only the water separator caution lamp lights up, it lights up at position (4).
If other caution lamps also light up at the same time, the water separator caution lamp lights up at a
different position.
• If drain plug (6) is hard to turn, apply grease to O-ring (7) of plug (6) according to the following proce-
dure.
1)
Place a container under the drain hose (5) to
catch the fuel.
2)
Loosen plug (6) and drain all the fuel and sedi-
ment through drain hose (5).
3)
Check that nothing more comes out from drain
hose (5), then remove plug (6).
4)
Apply a suitable amount of grease to O-ring (7).
At this time, take care that grease will not stick to
water drain port (a) and threaded portion of the
plug.
5)
Tighten plug (6) by hand until it stops.
6)
Remove the container to catch the drained fuel.
• If the transparent cup (3) is so dirty that the inside cannot be seen, clean the transparent cup
(3) when replacing the filter.
• In the case that the plug (6) has been removed during the cleaning work, apply grease to O-
ring (7) and tighten with your fingers until it stops.
METHOD FOR CHECKING COOLANT LEVEL, ADDING COOLANT
• Do not open the radiator cap unless it is necessary. When checking the coolant level, check it with
the reservoir tank when the engine is cold.
• Immediately after the engine is stopped, the coolant is hot. Also, the pressure is accumulated in the
radiator. You may get burn injury if you remove the cap in this state. Wait for the temperature to go
down, and then turn the cap slowly to release the pressure.
When refilling with coolant, support your body securely by using the steps and handrails provided.
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WARNING
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CAUTION
OPERATION