Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Chevrolet >> 1982 >> Cavalier CL, 2D Hatchback, Automatic Trans >> Repair and Diagnosis >> General Information >> Specifications Index >> General Servicing >> Orifice Tube Removal >> General Motors >> Removal & Installation

Removal & Installation

  1. Discharge refrigerant from system and disconnect liquid line at evaporator inlet. Remove orifice tube using needle nose pliers or Remover Tool (J 26549-C or equivalent).
  2. If difficulty is encountered during removal of a plugged or restricted orifice tube, remove as much impacted residue as possible. Using a heat gun, hair drier, epoxy drier or equivalent, apply heat 1/4" from dimples on inlet pipe. Be careful not to overheat pipe.
    NOTE: If system has a pressure switch near orifice tube location, remove the switch prior to heating inlet pipe to avoid damaging switch.
  3. While heat is being applied, install orifice tube Remover Tool (J 26549-C or equivalent) and using a turning motion along with a push-pull motion to loosen orifice tube and remove it.
  4. Swab inside of inlet pipe with solvent and add 1 oz. of refrigerant oil to system. Lubricate new "O" rings with refrigerant oil and insert into inlet pipe. Install orifice tube with shorter screen end first.
  5. Reverse the rest of removal procedure to complete installation. Recharge system and test system for proper operation.
scientia non olet · About Mike's Workshop Manuals