Air Conditioning Unit Disassembly

Heater & Air Conditioning System. Lexus Gs430, Gs300. Uzs190 Grs190
Air Conditioning. Lexus Gs430, Gs300. Uzs190 Grs190

  1. REMOVE AIR CONDITIONING TUBE AND ACCESSORY ASSEMBLY

  2. REMOVE COOLER EXPANSION VALVE

  3. REMOVE AIR OUTLET CONTROL SERVOMOTOR RH

  4. REMOVE AIR MIX CONTROL SERVOMOTOR RH

  5. REMOVE AIR CONDITIONING HARNESS ASSEMBLY

  6. REMOVE AIR OUTLET CONTROL SERVOMOTOR LH

  7. REMOVE AIR MIX CONTROL SERVOMOTOR LH

  8. REMOVE HEATER RADIATOR UNIT SUB-ASSEMBLY

  9. REMOVE NO. 1 COOLER EVAPORATOR SUB-ASSEMBLY

Air Conditioning Unit -- Disassembly



1. REMOVE AIR CONDITIONING TUBE AND ACCESSORY ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.Air Conditioning.Air Conditioning System.Air Conditioning Unit  Disassembly
  1. Remove the packing from the A/C tube.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a 4 mm hexagon wench, remove the 2 hexagon bolts and A/C tube.

  1. Remove the 2 O-rings from the A/C tube.



2. REMOVE COOLER EXPANSION VALVE


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the cooler expansion valve from the cooler evaporator.



3. REMOVE AIR OUTLET CONTROL SERVOMOTOR RH


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Disconnect the connector.

  1. Remove the 3 screws and servomotor.



4. REMOVE AIR MIX CONTROL SERVOMOTOR RH


    Lexus Gs430, Gs300. Uzs190 Grs190.Air Conditioning.Air Conditioning System.Air Conditioning Unit  Disassembly
  1. Remove the 3 clamps and connector and disconnect the wire harness.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 2 screws and heater piping cover.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 3 screws and air servomotor.



5. REMOVE AIR CONDITIONING HARNESS ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.Air Conditioning.Air Conditioning System.Air Conditioning Unit  Disassembly
  1. Disconnect the 2 connectors and detach the 2 clamps.



    Lexus Gs430, Gs300. Uzs190 Grs190.Air Conditioning.Air Conditioning System.Air Conditioning Unit  Disassembly
  1. Detach the 4 clamps and then disconnect the wire harness.

  1. Remove the A/C harness as shown in the illustration.



6. REMOVE AIR OUTLET CONTROL SERVOMOTOR LH


    Lexus Gs430, Gs300. Uzs190 Grs190.Air Conditioning.Air Conditioning System.Air Conditioning Unit  Disassembly
  1. Remove the 2 screws and air duct.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 4 screws and servomotors.



    Lexus Gs430, Gs300. Uzs190 Grs190.Air Conditioning.Air Conditioning System.Air Conditioning Unit  Disassembly
  1. Remove the 3 screws.

  1. Detach the claw and remove the air outlet control servomotor.



7. REMOVE AIR MIX CONTROL SERVOMOTOR LH


    Lexus Gs430, Gs300. Uzs190 Grs190.Air Conditioning.Air Conditioning System.Air Conditioning Unit  Disassembly
  1. Remove the 3 screws.

  1. Release the claw and remove the servomotor.



8. REMOVE HEATER RADIATOR UNIT SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the screw and clamp.

  1. Remove the radiator unit.



9. REMOVE NO. 1 COOLER EVAPORATOR SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.Air Conditioning.Air Conditioning System.Air Conditioning Unit  Disassembly
  1. Remove the 5 screws.

  1. Release the 3 claws and remove the air duct case.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the cooler evaporator from the heater case.

  1. Remove the 2 O-rings from the cooler evaporator.