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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1175 (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 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the cap or tape from the rear evaporator tube.
  2. Install the tube (short filter screen outlet side first) fully into the front evaporator tube.
    Fig 1: Installing Orifice Tube
    G01418583Courtesy of GENERAL MOTORS CORP.
  3. Install new O-rings to the expansion tube. Refer to O-RING REPLACEMENT 
  4. Connect the front evaporator tube to the rear evaporator tube.
    NOTE: Refer to FASTENER NOTICE .
  5. Install the front evaporator tube to rear evaporator tube retaining bolt.

    Tighten 

    Tighten the bolt to 25 N.m (18 lb ft).

  6. Evacuate and recharge the A/C system. Refer to REFRIGERANT RECOVERY AND RECHARGING  .
  7. Leak test the fittings of the component using J 39400-A  .
Fig 2: Connecting Front Evaporator Tube To Rear Evaporator Tube
G01418584Courtesy of GENERAL MOTORS CORP.
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