Fuel System Manual Control Valve (CNG): Service and Repair

REMOVAL

WARNING
^ THE FUEL SYSTEM WILL REMAIN PRESSURIZED AFTER ENGINE SHUTDOWN. THIS PRESSURE MUST BE RELIEVED BEFORE SERVICING ANY PART OF THE FUEL SYSTEM, OR PERSONAL INJURY OR PROPERTY DAMAGE MAY RESULT.
^ EYE PROTECTION IS REQUIRED WHEN REMOVING OR INSTALLING FUEL SYSTEM COMPONENTS TO AVOID POSSIBLE INJURY.

1. Perform the Pressure Relief-Fuel System.
2. Disconnect the battery ground cable.
3. Raise the vehicle.







4. Remove the bolts and remove the fuel pressure regulator shield.







5. Slowly loosen the fuel line tube nuts to allow residual pressure to vent. Remove the tube nuts from the quarter-turn valve fittings.







6. Remove the retaining clip and remove the quarter-turn valve.

INSTALLATION

NOTE
^ Install new fuel system O-rings using approved O-rings only. O-rings that are approved for natural gas use are identified with a yellow stripe.
^ Lubricate the fuel system O-ring seals with Super Premium SAE 5W30 Motor Oil XO-5W30-QSP or equivalent meeting Ford specification WSS-M2C153-G or equivalent prior to installation to help seal and ease the installation.
^ When tightening the fuel lines, a torque wrench adapter must be used with the torque wrench. The use of a torque wrench adapter will alter the effective torque of the torque wrench being used. To correct the effective torque, a torque multiplication conversion must be used.
^ After installation is complete, perform the fuel system leak test procedure.












1. To install, reverse the removal procedure.