Komatsu ecot3 Operation And Maintenance Manual page 337

MAINTENANCE PROCEDURE MAINTENANCE PROCEDURE
4. Loosen water drain plug (4) to completely drain fuel in the
casing.
5. If fuel is not drained, remove air intake plug (5). (Width across
flats: 14 mm)
6. Disconnect drain hose (2).
7. Loosen ring nut (6) to remove casing (7).
8. Remove screen (8) from the water separator table, pulling the
screen out downward.
9. Wash screen (8) with clean fuel.
At that time, also check it for damage and if any, replace it with
a new one.
10. Wash the interior of casing (7) for damage, a crack or so bad
a contamination as to make it impossible to identify the location
of float (9), and if any of them is found, replace the casing with
a new one.
11. Install screen (8) on the water separator table.
12. Replace O-ring (10) with a new one.
13. Screw in water drain plug (4).
Tightening torque: 1.5 to 2.5 Nm (0.15 to 0.25 kgm, 1.1 to 1.8
lbft)
14. Put float (9) in casing (7) the way it does not tilt, and then pour
clean fuel in the casing calmly.
15. Install casing (7) on the water separator table and tighten ring
nut (6).
Tightening torque: 16 to 20 Nm (1.6 to 2.0 kgm, 11.6 to 14.5
lbft)
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MAINTENANCE MAINTENANCE