Fuel System; Fuel Filter - Isuzu A-4JA1 Workshop Manual

4. Clean the oil cooler fitting face.
This will allow the new oil filter to seat properly.
5. Apply a light coat of engine oil to the O-ring.
6. Turn in the new oil filter until the filter O-ring is
fitted against the sealing face.
7. Use a filter wrench to turn in the filter an additional
1 and 1/4 of a turn.
Filter Wrench
8. Check the engine oil level and replenish to the spec-
ified level if required.
9. Start the engine and check for oil leakage from the
main oil filter.

FUEL SYSTEM

Fuel Filter

Replacement Procedure
1. Loosen the used fuel filter by turning it counter-
clockwise with the filter wrench.
Filter Wrench
2. Clean the upper cover fitting face.
This will allow the new fuel filter to seat properly.
3. Apply a light coat of engine oil to the O-ring.
4. Supply fuel to the new fuel filter to facilitate bleed-
ing.
5. Turn in the new fuel filter until the filter O-ring is fit-
ted against the sealing face.
Be very careful to avoid fuel spillage.
6. Use a filter wrench to turn in the fuel filter an addi-
tional 1/3 to 2/3 of a turn.
MAINTENANCE
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