Savana 1/2 Ton Van V8-5.7L VIN R (2001)
11. After fuel has stopped venting at the HPR fitting perform the following:
11.1. Slowly loosen the fuel line fitting (6) at the low pressure lock-off (LPL) INLET port (5) several turns. Do NOT remove the fitting.
11.2. Relieve fuel line tension by pulling the line away from the LPL.
11.3. Fuel Pressure Relief for the CNG system is complete when the fuel line (6) at the LPL inlet port (5) can be pulled away from the O-ring face
seal and fuel fails to vent.
CAUTION: Refer to Compressed Natural Gas (CNG) O-Ring Caution in Service Precautions.
11.4. Replace the O-ring face seals at all fittings that were disconnected or loosened.
11.5. After all necessary repairs are complete perform the following:
11.5.1. Tighten any loosened fittings to the correct torque. Refer to Fastener Tightening Specifications.
11.5.2. Open the manual lock-down screws located on the HPL manual shut-off fittings by rotating the allen screws counterclockwise until
fully seated on any vehicle that does not require venting of the CNG fuel TANKS.
Leave the manual lock-down screws CLOSED on any vehicle that will require CNG fuel TANK venting.
IMPORTANT: If the service necessary for the vehicle requires that the ignition be turned ON with CNG components or lines disconnected, keep the
CNG 20 amp fuse removed in order to prevent CNG fuel venting during an ignition ON prime pulse.
12. If the service necessary for the vehicle requires the CNG fuel TANK be relieved of all internal pressure, refer to Fuel Tank Venting Procedure.
