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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1666 (Heating, Ventilation And Air Conditioning) >> Repair Instruction >> Expansion (Orifice) Tube Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Lubricate the new O-ring seal (2) with mineral base 525 viscosity refrigerant oil.
  1. If you reuse the orifice tube, install the new O-ring seals (2).
    Fig 1: Identifying Expansion (Orifice) Tube Components
    G01568612Courtesy of GENERAL MOTORS CORP.
  2. Carefully grasp the edge of the expansion (orifice) tube (1) without touching the inlet filter (3) and insert the expansion tube into the condenser tube until fully seated.
  3. Install the condenser tube. Refer to CONDENSER TUBE REPLACEMENT  .