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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 395 (Fuel System - 2500 Hd & 3500 Hd) >> Fuel Delivery, CNG >> Regulator, Fuel Pressure >> Installation >> CNG Installation

CNG Installation

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Micron Filter & Pressure Regulator
GC0155427Courtesy of CHRYSLER GROUP, LLC
  1. If removed, install the high side filter into the inlet fitting.
    Fig 2: CNG High Pressure Regulator & High Side Inlet Fitting
    GC0155435Courtesy of CHRYSLER GROUP, LLC
  2. Install the inlet fitting (1) into the regulator (2). Tighten to 42 N.m (31 ft. lbs.).
    Fig 3: Pressure Regulator & Low Side Elbow
    GC0155442Courtesy of CHRYSLER GROUP, LLC
  3. If removed, install the elbow into the low side out put. Tighten to 73 N.m (54 ft. lbs.).
    Fig 4: Regulator, Low Side Supply Line, Bracket & Bolts
    GC0155448Courtesy of CHRYSLER GROUP, LLC
  4. Position the regulator (1) to the mounting bracket (3).
  5. Install the regulator to bracket bolts. Tighten to 21 N.m (16 ft. lbs.).
  6. Loosely install the low pressure line (2) to the pressure regulator (1).
    Fig 5: Regulator Mount, Regulator & Nuts
    GC0155399Courtesy of CHRYSLER GROUP, LLC
  7. Position the regulator assembly (2) onto the bulkhead by guiding the bracket tab (1) into the inner fender.
  8. Install the mounting nuts (3). Tighten to 9 N.m (80 in. lbs.).
  9. Tighten the low pressure supply line to 45 N.m (33 ft. lbs.).
    Fig 6: CNG High Pressure Regulator, High Pressure Line & Shut-Off Relay
    GC0155443Courtesy of CHRYSLER GROUP, LLC
  10. Install the high pressure supply line (2). Tighten line to 45 N.m (33 ft. lbs.).
  11. Connect the CNG shut-off relay (3) electrical connector.
    Fig 7: CNG Pressure Regulator
    GC0155458Courtesy of CHRYSLER GROUP, LLC
  12. Connect the electrical connector to the high pressure sensor (3).
  13. Connect the high pressure shut down solenoid electrical connector (9).
  14. Install the cooling lines at the pressure regulator (8).
    Fig 8: Inner Fender & PCM Bracket
    GC0155460Courtesy of CHRYSLER GROUP, LLC
  15. Position the PCM bracket (2) to the inner fender (1).
    Fig 9: Remove/Install Lower Housing
    GC0154562Courtesy of CHRYSLER GROUP, LLC
  16. Position the air housing mount (2) to the inner fender.
  17. Align the mount to the PCM bracket. Tighten the air cleaner housing mount bolts (1) to 10 N.m (89 in. lbs.).
    Fig 10: Clean Air Tube, IAT Sensor Electrical Connector & Air Cleaner Housing
    GC0155436Courtesy of CHRYSLER GROUP, LLC
  18. Install the lower air cleaner housing assembly.
  19. Install the upper air cleaner cover (3) and clean air tube (1) assembly.
  20. Connect the IAT sensor electrical connector (2).
  21. Fill the CNG lines.
  22. Checked the CNG system for leaks using an air leak detection fluid.
  23. Connect the battery negative cable.
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