F 54 13
Changing the prefilter:
- Drain off separated water at the cock (E) and collect, then close the cock again.
- Pull off the water sensor (F) connector.
- Loosen the filter cartridge (C) using a filter wrench or filter strap and unscrew.
- Clean sealing surface of filter bracket.
- Lightly oil the filter cartridge gasket and screw under the bracket.
- Once the gasket has contact with the filter head, turn the filter another 3/4
to full revolution.
- Reconnect the water sensor (F) connector.
Bleeding the pre-filter:
- Release the manual fuel pump's (G) bayonet lock by pressing and simultaneously
turning counter-clockwise.
- The pump plunger is now pressed out via the spring.
- Pump until a very high resistance is perceptible and pumping can only be carried
out very slowly.
- Now continue pumping a few more times. (The return line must be filled).
- Start the engine and operate for approx. 5 minutes at idle speed or low load.
- Check the prefilter for leaks whilst doing this.
- Lock the manual fuel pump's (G) bayonet lock by pressing and simultaneously turn-
ing clockwise.
Replacing the main filter:
- Loosen the filter cartridge (D) using a filter wrench or filter strap and unscrew.
- Clean sealing surface of filter bracket.
- Lightly oil the filter cartridge gasket and screw under the bracket.
- Once the gasket has contact with the filter head, turn the filter another 3/4
to full revolution.
A
Torque: 38Nm
A
After fitting the filter, ensure good sealing action during the test run.
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