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Air Conditioning Unit: Removal

WARNING: This page is about a different car, the 2003 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM 

    HINT:

    At the time of installation, please refer to the following item. Evacuate air from refrigeration system. Charge system with refrigerant and inspect for leakage of refrigerant.

    1. Specified amount: 650 +/- 50 g (22.92 +/- 1.76 oz.) 
  2. DRAIN ENGINE COOLANT FROM RADIATOR 

    HINT:

    It is not necessary to drain out all coolant.

  3. REMOVE THESE PARTS: 
    1. Wiper arm
    2. LH cowl top ventilator louver
    3. RH cowl top ventilator louver
    4. Wiper motor (See REMOVAL )
    5. Hood
    6. Outer FR cowl top panel assembly
    7. Instrument panel and reinforcement (See REMOVAL )
  4. DISCONNECT LIQUID TUBE AND SUCTION HOSE FROM A/C UNIT 

    Remove the bolt and slide the plate, then disconnect the both tubes.

    1. Torque: 10 N.m (100 kgf.cm, 7 ft.lbf) 
    NOTE: Cap the open fittings immediately to keep moisture or dirt out of the system.

    HINT:

    At the time of installation, please refer to the following item. Lubricate 2 new O-rings with compress oil and install them to the tubes.

    Fig 1: Disconnecting Liquid Tube And Suction Hose From A/C Unit
    G01331152Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. DISCONNECT WATER HOSES FROM HEATER RADIATOR PIPES 
    1. Grip the claws of the hose clip and slide the hose clip along the water hose.
    2. Disconnect the water hose.
      Fig 2: Disconnecting Water Hoses From Heater Radiator Pipes
      G01331153Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    At the time of installation, please refer to the following items.

    • Push the water hose onto the heater radiator pipe as far as the grommet.
    • Install the hose clip in a position, as shown in Fig 3.
    Fig 3: Instructions For Water Hose Installation
    G01331154Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. REMOVE BLOWER UNIT 
    1. Disconnect the connectors.
    2. Remove the 3 screws and air duct.
      Fig 4: Removing Air Duct
      G01331155Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disconnect wire harness clamp.
    4. Remove the nut, 2 bolts, screw and blower unit.
    Fig 5: Removing Blower Unit
    G01331156Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE A/C UNIT 
    1. Release the 2 claws and remove the lower defroster nozzle and heater to resister center duct.
      Fig 6: Removing Lower Defroster Nozzle And Heater
      G01331157Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the No.1 console box duct.
      Fig 7: Removing No.1 Console Box Duct
      G01331158Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disconnect the connector.
    4. Remove the 2 nuts, 2 bolts and A/C unit.
      Fig 8: Removing A/C Unit
      G01331159Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      At the time of installation, please refer to the following item.

      Align the marking on the drain hose, as shown in Fig 9.

      Fig 9: Instructions For A/C Installation
      G01331160Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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