CNG Removal

WARNING:  Refer to FUEL DELIVERY, CNG, WARNING .

Fig 1: Clean Air Tube, IAT Sensor Electrical Connector & Air Cleaner Housing

Courtesy of CHRYSLER GROUP, LLC

1. Perform the CNG fuel system purge. Refer to FUEL TUBE PURGING - CNG  .FUEL TUBE PURGING - CNG 
2. Disconnect the IAT sensor (2)
3. Remove the air cleaner upper cover (3) and clean air tube (1) at the throttle body as an assembly.
4. Remove the lower air cleaner housing assembly.
   Fig 2: Remove/Install Lower Housing

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5. Remove the lower air cleaner housing mount (2).
   Fig 3: Inner Fender & PCM Bracket

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6. Remove the PCM bracket (2) from the inner fender (1) and position aside.
   Fig 4: CNG High Pressure Regulator, High Pressure Line & Shut-Off Relay

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7. Disconnect the battery negative cable.
8. Disconnect the CNG shut-off relay (3).
9. Remove the high pressure line (2) from the regulator (1).
   Fig 5: CNG High Pressure Regulator & High Side Inlet Fitting

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10. If required, remove the high side inlet fitting (1) from the pressure regulator (2).
    Fig 6: Micron Filter & Pressure Regulator

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11. Remove the filter from the inlet fitting.
    Fig 7: CNG Pressure Regulator

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12. Disconnect the high pressure sensor electrical connector (3).
13. Disconnect the high pressure shut down solenoid electrical connector (9).
14. Lower the cooling system to the proper level.
15. Remove the cooling lines at the regulator (8).
    Fig 8: Regulator Mount, Regulator & Nuts

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16. Remove the low pressure supply line at the fuel rail.
17. Remove the nuts (3) that mount the regulator (2) to the bulkhead.
    Fig 9: Regulator, Low Side Supply Line, Bracket & Bolts

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18. Remove the bolts (4) that mount the regulator (1) to the bracket (3).
19. Remove the low side supply line (2).
    Fig 10: Pressure Regulator & Low Side Elbow

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20. If required, remove the low side elbow (2) from the pressure regulator (1).