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Home >> Chevrolet >> 2002 >> Astro Van Passenger, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 802 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Expansion (Orifice) Tube Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Safari and 2003 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

Important:  Install the shorter screen end of the expansion (orifice) tube into the evaporator first.

  1. Use the J 26549-E  in order to install the expansion (orifice) tube.
    Fig 1: Installing Expansion (Orifice) Tube
    G01645578Courtesy of GENERAL MOTORS CORP.
  2. Install the new O-ring seal. Refer to O-RING REPLACEMENT  .
    NOTE: Refer to FASTENER NOTICE in Caution and Notices.
  3. Install the evaporator tube to the evaporator.

    Tighten 

    Tighten the evaporator tube nut to 28 N.m (20 lb ft).

  4. Evacuate and recharge the system. Refer to REFRIGERANT RECOVERY AND RECHARGING .
  5. Leak test the fittings of the component using the J 39400-A. 
  6. Install the air cleaner. Refer to AIR CLEANER ASSEMBLY in Removal & Installation.
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