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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1482 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Thermal Expansion Valve Replacement - Auxiliary >> Installation Procedure

Installation Procedure

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  1. Remove the cap or tape from the evaporator core-auxiliary lines.
  2. Install the new O-ring. Refer to O-RING REPLACEMENT .
  3. Install the thermal expansion valve-auxiliary onto the evaporator core- auxiliary lines.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  4. Using a back up wrench, install the flare nuts from the evaporator core- auxiliary lines to the thermal expansion valve-auxiliary.

    Tighten 

    Tighten the nuts to 5 N.m (44 lb in).

  5. Install the foam insulators to the evaporator core-auxiliary lines (3).
  6. Install the foam insulators to the thermal expansion valve-auxiliary (4).
    Fig 1: Installing Foam Insulators To Thermal Expansion Valve-Auxiliary
    G01596673Courtesy of GENERAL MOTORS CORP.
  7. Install the evaporator core-auxiliary. Refer to EVAPORATOR CORE REPLACEMENT - AUXILIARY .
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