Fuel Hose/Pipe Replacement - High Pressure Lock-Off to High Pressure Lock-Off Passenger/Cargo
Tools Required
J 45878 Combustible Gas Detector
Removal Procedure
Caution: Natural gas is highly flammable. In order to reduce the risk of fire
and personal injury, keep sparks, flames, and smoking materials away from
the vehicle while you perform the Compressed Natural Gas (CNG) fuel system
service.
Caution: The Compressed Natural Gas (CNG) system operates at pressures up to
24820 kpa (3600 psi). Relieve the CNG fuel system pressure before
servicing CNG fuel system components in order to reduce the risk of fire and
personal injury.
- Relieve the CNG fuel system pressure. Refer to
Fuel Pressure Relief
.
- Disconnect the negative battery cable. Refer to
Battery Negative Cable Disconnection and Connection
in Engine Electrical in the G/H Van service manual.
- Raise the vehicle. Refer to
Lifting and Jacking the Vehicle
in General Information in the G/H Van service manual.
- Remove the CNG fuel tank cover. Refer to
Fuel Tank Cover Replacement
.
- Disconnect the fuel line fitting (2, 3) at each high pressure lock-off (HPL) fitting.
- Remove the fuel line from the vehicle.
Installation Procedure
Notice: Refer to Fastener Notice in the Preface section.
- Connect the CNG fuel line between the high pressure lock-off solenoid fittings (2, 3) using NEW O-rings. Lubricate the new O-rings with petroleum jelly or equivalent before installation.
Tighten
Tighten the fuel line fittings to 45 N·m (33 lb ft).
- Install the negative battery cable. Refer to
Battery Negative Cable Disconnection and Connection
in Engine Electrical in the G/H Van service manual.
- Start the vehicle and inspect for CNG fuel leaks at the serviced fittings with the J 45878
or an equivalent leak detector.
- Install the CNG fuel tank cover. Refer to
Fuel Tank Cover Replacement
.
Fuel Hose/Pipe Replacement - High Pressure Lock-Off to High Pressure Lock-Off Cutaway
Tools Required
J 45878 Combustible Gas Detector
Removal Procedure
Caution: Natural gas is highly flammable. In order to reduce the risk of fire
and personal injury, keep sparks, flames, and smoking materials away from
the vehicle while you perform the Compressed Natural Gas (CNG) fuel system
service.
Caution: The Compressed Natural Gas (CNG) system operates at pressures up to
24820 kpa (3600 psi). Relieve the CNG fuel system pressure before
servicing CNG fuel system components in order to reduce the risk of fire and
personal injury.
- Relieve the CNG fuel system pressure. Refer to
Fuel Pressure Relief
.
- Disconnect the negative battery cable. Refer to
Battery Negative Cable Disconnection and Connection
in Engine Electrical in the G/H Van service manual.
- Raise the vehicle. Refer to
Lifting and Jacking the Vehicle
in General Information in the G/H Van service manual.
- Remove the CNG fuel tank cover. Refer to
Fuel Tank Cover Replacement
.
- Disconnect the fuel line fitting (3, 4) at each high pressure lock-off (HPL) fitting.
- Remove the fuel line from the vehicle.
Installation Procedure
Notice: Refer to Fastener Notice in the Preface section.
- Connect the CNG fuel line between the high pressure lock-off solenoid fittings (3, 4) using NEW O-rings. Lubricate the new O-rings with petroleum jelly or equivalent before installation.
Tighten
Tighten the fuel line fittings to 45 N·m (33 lb ft).
- Install the negative battery cable. Refer to
Battery Negative Cable Disconnection and Connection
in Engine Electrical in the G/H Van service manual.
- Start the vehicle and inspect for CNG fuel leaks at the serviced fittings with the J 45878
or an equivalent leak detector.
- Install the CNG fuel tank cover. Refer to
Fuel Tank Cover Replacement
.