Replacing the fuel filter in a diesel engine (VW Caddy 3)

To replace the fuel filter, you need to do the following.

1. Unscrew the plug of the water drain hole (1).



2. Connect the condensate drain container hose to the fitting.

3. Using a hand vacuum pump, pump out approximately 100 ml of diesel fuel.

4. Replace the sealing ring of the water drain hole plug.

5. Tighten the threaded plug of the water drain hole to a torque of 3 Nm.

6. Loosen all screws (arrows) on the top of the fuel filter crosswise by approximately 1.5-2 turns.



7. Completely unscrew the screws and remove the upper part of the fuel filter.

8. Remove the replaceable filter element (1) and seal (2) from the lower part (4) of the fuel filter.

9. Replace the seal (3).



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10. Install the new filter element into the bottom of the fuel filter.

11. Install a new seal (1) into the top of the fuel filter.



12. Install the upper part of the fuel filter with the seal onto the lower part of the fuel filter.

13. Twist the upper part of the fuel filter with its lower part.

14. Tighten the screws in the sequence shown in the figure.

15. Tighten the screws to a torque of 5 Nm. Tighten the screws in this sequence (see figure VC1.051) prevents the upper part of the fuel filter from becoming skewed and, as a result, damaging the seal.

16. Start the engine and inspect the fuel filter for fuel leaks.

To ensure quick engine starting after replacing the fuel filter, air must be removed from the fuel system using a tester. This work must be carried out in a specialized service station.