Perkins — Fuel System Primary Filter (Water Separator) Element - Replace

Maintenance · Fuel system primary filter/water separator

From a Perkins operator's manual — check it applies to your exact model before use.

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Procedure

1. Turn the start switch to the OFF position or disconnect the battery.
2. Shut off the fuel supply.
3. Turn the drain valve counterclockwise to open; drain water and sediment into a suitable container.
4. Close the drain valve.
5. Hold the bottom of the filter while loosening the bowl; remove the bowl.
6. Turn the filter counterclockwise to loosen; use a strap wrench if the filter will not turn.
7. Remove and discard the filter; clean the bottom of the filter mounting base and remove all old filter seal.
8. Clean the water separator bowl and the groove for the seal; inspect and replace the seal if worn or damaged.
9. Lubricate the seal with clean diesel fuel or clean motor oil; place the seal in the groove on the bowl.
10. Install the water separator bowl onto the new fuel filter by hand; tighten to 15 N·m (11 lb ft).
11. Apply clean diesel fuel to the seal of the new filter.
12. Install the new filter onto the base; tighten by hand until the seal contacts the base, then an additional 1/3 to 1/2 rotation.
13. Open the fuel shutoff valve and reconnect the battery.
14. Purge the air from the fuel system.
15. Stop the engine and check for leaks.

Source: Perkins operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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