Fuel Filter: Testing and Inspection
InspectionWARNING:
- Compressed natural gas is flammable and highly explosive. You could be killed or seriously injured if leaking natural gas is ignited.
- Stop the engine, and keep heat, sparks and flames away.
1. Relieve the fuel pressure (between the engine and the manual shut-off valve).
2. Remove the under-floor cover.
3. Loosen the drain plug on the fuel filter slowly. Hold the fuel filter housing when loosening drain plug.
4. Apply PAG oil to a new O-ring, and carefully install it into its proper position.
5. Install parts in reverse order of removal.
6. Perform the leak inspection procedure.