GM/Detroit 6.5L ENGINE CONTROLS – Fuel Filter Element Replacement

Removal Procedure
1. Remove the fuel tank filler cap.
2. Loosen the upper intake manifold cover bolts
3. Remove the upper intake manifold cover.

4. Open the air bleed valve on top of the fuel manager/filter to release any pressure in the fuel supply system.

5. Remove the element nut by turning it in a counterc l ockwise direction. If the nut is unable to turn by hand, a strap wrench (oil filter type) may be used to break loose the element nut.

6. Remove the filter by lifting it straight up and out of the filter assembly. It is not necessary to drain fuel from the filter assembly to change the filter element since the fuel will remain in the filter assembly’s cavity.

Installation Procedure
Important: Make sure the mating surface between the element assembl y and the filter assembly is clean before install ation.
1. Install the new filter by aligning the widest key slot located under the element assembly cap with the widest key in the header assembly.

2. Push the element, in a downward direction until the mating surfaces make contact.
Notice : Refer to Fastener Notice in Cautions and Notices.
3. Install the element nut.
Tighten the element nut securely by hand.
4. Bleed the air from the fuel manager/filter. Refer to Fuel Feed and Fuel Return Pipe Purge Procedure.

5. Install the upper intake manifold cover.
6. Install the bolts.
Tighten the bolts to 11 N-m (100 lb in).
7. Install fuel tank filler cap.


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