Komatsu WA100M-7, Operation And Maintenance Manual

Page: 261 / 304

5.8 Maintenance procedure
Maintenance Maintenance every 500 service hours
WA80M-7, WA100M-7 – VENAM03001
5-59
Fuel prefilter – changing filter cartridge
DANGER
 Danger of fire! Fuel may ignite when making contact with hot
surfaces!
 Wait until the engine has cooled down before you exchange
the filter cartridge. Keep open flames and sparks away from
fuel. Do not smoke.
1. For maintenance work, park and secure the machine as
described in chapter “Maintenance guide (5-2)”.
2. Clean the area around the fuel filters (1).
3. Unplug the connector (2) of the sensor (3).
4. Use the filter wrench to unscrew the fuel filter (1) anticlock-
wise.
5. Unscrew the sensor (3) and the drain valve (7) with o-rings
(4) and (6) from the fuel filter.
6. Screw the sensor (3) and the drain valve (7) with new o-rings
(4) and (6) to the new fuel filter.
7. Clean the filter head (5).
8. Fill the new filter cartridge (1) with clean fuel.
9. Apply a thin layer of oil to the sealing surfaces of the filter
cartridge.
10. When reinstalling the filter cartridge, screw it in by hand until
the seal makes contact. Then tighten the filter cartridge by
hand (observe the instructions of the filter manufacturer).
11. Reconnect the connector (2) of the sensor (3).
12. Bleed the fuel system.
For details see “Fuel system – bleeding (5-64)”.
13. Start the engine and check for leakage.
1
5
WA80M-7
1
5
WA100M-7
G0070282
1
2
3
4
5
7
6