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Removal ("W" Body)

  1. Locate orifice tube. See ORIFICE TUBE LOCATION & REMOVER/INSTALLER APPLICATION (GENERAL MOTORS)  table. Remove air cleaner and duct assembly. Discharge A/C system, using approved recovery/recycling equipment. Disconnect negative battery cable. Disconnect ABS modulator and A/C pressure sensor/fan switch electrical connectors.
  2. Disconnect liquid line/suction line bracket. Disconnect liquid line at orifice tube. Remove orifice tube using specified orifice tube remover/installer. See ORIFICE TUBE LOCATION & REMOVER/INSTALLER APPLICATION (GENERAL MOTORS)  table.
  3. If difficulty is encountered during removal of a plugged or restricted orifice tube, remove as much residue as possible. Using a heat gun, carefully heat inlet line. If inlet line has small dimples, apply heat 1/4" from dimples. DO NOT overheat line.
  4. If A/C pressure switch is located near orifice tube, remove switch to protect from heat. While heat is being applied, grip orifice tube using needle-nose pliers. Use a turning motion along with a push-pull motion to loosen and remove orifice tube.
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