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[4] CHECKING/CLEANING WATER SEPARATOR
• The water separator pot has fuel (diesel oil) inside. Be extremely careful of fire such as
cigarette when cleaning the water separator pot.
• If the fuel spills when the water separator pot is removed, thoroughly wipe it off.
CAUTION
• Water or dust accumulated inside the water separator pot will cause engine failure. Check
inside the pot and remove any water or dust accumulated inside.
• If water remains in the water separator pot, it is assumed that much water is also mixed in the
fuel tank. See “Maintenance 8.7 Maintenance for Every 50 Hours” and eliminate water and dust
mixed into the fuel tank.
1. Stop the machine at leveled location.
2. See “Operation 1.9 Engine Hood” and open the engine hood.
3. Check the water separator pot (1) for any water or dust in the pot
and verify if the red float (2) in the pot has not come up from the
bottom.
The red float (2) in the pot (1) coming up indicates that the water
has mixed in.
4. If there is water accumulated in the pot (1), clean the inside of
the pot using the following procedure.
(1) Raise the fuel lever (3) of the head (5) section to horizontal
position (close) to shut off the fuel.
(2) Turn the retainer ring (4) of the head (5) section
counterclockwise to loosen, then remove the pot (1) from the
head (5) section.
(3) Drain the fuel and water out of the pot (1).
(4) Clean the pot (1) with diesel, and spray the compressed air
(0.20 to 0.29 MPa {2 to 3 kg/cm2}) inside to scrape off the
dusts from the surface.
(5) Set the pot (1) to the head (5) section, then turn the retainer
ring (4) clockwise to tighten.
(6) Lower the fuel lever (3) of the head (5) section down to the
vertical position (open) to open the fuel circuit.
5. See “Operation 1.9 Engine Hood” and close the engine hood.
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