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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 78 (Engine Controls - Remove/Install/Overhaul - 5.2L CNG) >> Fuel System >> Fuel Cylinders >> General Removal & Installation Procedures

General Removal & Installation Procedures

WARNING: This page is about a different car, the 1995 Dodge Ram Wagon, 1995 Dodge Ram Van, 1995 Dodge Pickup, and 1995 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
  1. Release fuel system pressure. See FUEL SYSTEM PURGING . Raise and support vehicle. Remove all applicable heat shields, rock guards and cylinder guards. Clean area around all fuel tube connections. Disconnect applicable fuel tubes.
  2. Disconnect fuel gauge pressure sensor harness connector. Support fuel cylinder or cylinder carrier assembly using appropriate jack. Ensure cylinder(s) are balanced and secure on jack lifting surface. Remove cylinder carrier or strap mounting bolts.
  3. Lower cylinder or cylinder assembly from vehicle. If cylinder carrier assembly is being held in place by adhesive, gently pry assembly loose using a wide-blade screwdriver. Mark cylinder-to-cylinder carrier position for reassembly reference. Remover carrier strap nuts, and remove cylinder from carrier (if applicable). If cylinder is being replaced, remove fuel cylinder control valve. Ensure cylinder is empty before removing control valve.
  4. To install cylinder(s), position cylinder in carrier (as applicable). Raise cylinders in position, and install cylinder carrier straps in parallel position. Secure cylinder assembly as needed in reverse order of disassembly. Tighten cylinder carrier strap nuts to specification. See TORQUE SPECIFICATIONS .
  5. If fuel cylinder control valve was removed, install valve using NEW "O" rings. Apply Parker O-Lube(R) to NEW "O" rings. Tighten fuel cylinder control valve to specification. Proceed to TORQUE SPECIFICATIONS . Connect fuel tube and check for proper tightness using go/no-go gauge. See FUEL TUBES & FITTINGS . Connect fuel gauge pressure sensor harness connector. Apply thread locking compound to fuel control valve guard mounting bolts. Install guard, and tighten bolts. Install heat shield.
CAUTION: Fuel cylinder control valve MUST return to original horizontal position. Loosen and reposition fuel cylinder in carrier as necessary.
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