Relief valve (new fuel vapor recovery system) (Discovery 1)

Removal

1. Remove the fuel tank filler neck.

2. Remove the fuel separator hose fastening clip and disconnect the hose.



3. Loosen the lock screw in the valve nut face by two turns.

4. Completely unscrew the valve nut.

Note: The nut holds the inner neck vent tube in place.

5. Carefully remove the valve and hose from the filler neck.

Installation

6. Install a new sealing ring onto the vent tube protrusion.

7. Install the safety valve. Make sure the vent tube sealing ring covers the valve.

8. Tighten the valve mounting nut by hand and tighten to a torque of 3 Nm.

9. Tighten the lock screw to 2 Nm.

10. Reinstall the removed parts.