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Home >> Chevrolet >> 2005 >> Chevy Express G3500, Van Passenger, LQ4/KL8 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 6.0L (CNG) - Introduction >> Repair Instructions >> Fill Line Replacement (Passenger/Cargo) >> Installation Procedure

Installation Procedure

    Fig 1: Check Valve, Fill Line & Restraints
    GM924841Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  1. Connect the fill line fitting (7) to the fill valve using a NEW O-ring. Lubricate the new O-ring with petroleum jelly or equivalent before installation.

    Tighten:  Tighten the fill line fitting to 45 N.m (33 lb ft).

  2. Connect the fill line fitting (10) to the check valve (11) using a NEW O-ring. Lubricate the new O-ring with petroleum jelly or equivalent before installation.

    Tighten:  Tighten the fuel line fitting to 45 N.m (33 lb ft).

  3. Install the P-clamp mounting screw (8).

    Tighten:  Tighten the mounting screw to 7 N.m (62 lb in).

  4. Install the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE in Engine Electrical.
  5. Start the vehicle and inspect for CNG fuel leaks at the serviced fittings with the J 45878  or an equivalent leak detector. See Special Tools .
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