Solenoids - Functioning Normally
PROCEDURE1. Connect the Rotunda Fuel Filter Neck Venting Kit 134-00017 and Rotunda Venting Hose 134-00118 or equivalent to the vent stack then to the vehicle fuel fill valve.
NOTE: Solenoid diagnostics must be completed on all tank solenoid valves prior to venting.
NOTE: All fuel tank solenoid valves should be in the locked down position.
2. Connect the Rotunda Grounding Cable 134-00121 or equivalent to the vehicle on the rear of the fuel filler valve assembly. Then connect the ground cable to earth ground.
3. Connect battery ground cable.
4. Remove fuel pump relay from power distribution box.
5. Jumper fuel pump relay circuit from socket 87 to socket 30.
NOTE: Construct a jumper wire from 152 mm (6 inches) of 18 gauge wire and two spade terminal ends.
6. Slowly open manual lock down valve on tank to be vented.
7. Slowly open manual backflow valve on fuel filler valve.
8. Note pressure on Rotunda Fuel Filter Neck Venting Kit 134-00117 or equivalent gauge. Pressure should be at tank pressure.
9. Slowly open bleed valve on the Rotunda Fuel Filter Neck Venting Kit 134-00117 or equivalent and allow contents of tank to vent to atmosphere. Venting may take over one hour.
10. Close bleed valve on Rotunda Fuel Filter Neck Venting Kit 134-00117 or equivalent and note pressure gauge reading. Reading should be at or near 0 kPa (0 psi).
11. Remove manual lock down valve.
12. Install Rotunda Manual Override Tool 134-00050 or equivalent into the tank solenoid. Tighten to 38-43 Nm (28-31 lb ft).
WARNING: Make sure the jackscrew in the Rotunda Manual Override Tool 134-00050 or equivalent is retracted fully (counter clockwise) prior to installation into the tank solenoid valve. Installation of the override tool in the venting position will cause natural gas to be immediately released.
CAUTION: Once solenoid valve has been opened by use of Rotunda Manual Override Tool 134-00050 or equivalent, the solenoid valve MUST be replaced.
13. Turn Rotunda Manual Override Tool 134-00050 or equivalent jackscrew clockwise until fuel flows.
14. Vent system until fuel flow stops.
15. Remove Rotunda Manual Override Tool 134-00050 or equivalent.
16. Install manual lock down valve in the solenoid valve. Tighten to 38-43 Nm (28-31 lb ft).
17. Tighten manual lock down valve jackscrew to 7-9 Nm (62-79 lb in).
18. Repeat procedure until all affected tanks are vented.