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Home >> Lexus >> 2002 >> LS 430 >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning >> Air Conditioning Unit >> Disassembly
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Air Conditioning Unit: Disassembly

  1. Remove drain hoses.
  2. Remove aspirator.
  3. Remove evaporator temperature sensor.
  4. Remove tube and accessory and expansion valve.
  5. Remove water valve control servomotor.
  6. Remove cool air bypass damper control servomotors.
    1. Remove the 6 screws and 2 servomotors.
      Fig 1: Locating Screws & Servomotors For Removal
      G01145178Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. Remove air mix servomotors.
    1. Remove the 6 screws and 2 servomotors.
      Fig 2: Locating Screws & Servomotors For Removal
      G01145179Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. Remove air outlet servomotors.
    1. Driver Side: 

      Remove the 6 screws, bracket and servomotor.

      Fig 3: Locating Screws, Bracket & Servomotor For Removal
      G01145180Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Passenger Side: 

      Remove the 3 screws and servomotor.

      Fig 4: Locating Screws & Servomotor For Removal
      G01145181Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. Remove duct.
    1. Remove the 5 screws and air vent duct.
      Fig 5: Locating Screws & Air Duct For Removal
      G01145182Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. Remove heater radiator.
    1. Remove the screw and clamp.
    2. Remove the 2 screws, 2 clamps and heater radiator pipes.
      Fig 6: Locating Screws & Clamps For Removal
      G01145183Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: At the time of reassembly, DO NOT  reuse the 2 O-rings.
    3. Pull out the heater radiator.
  11. Remove evaporator.
    1. Remove the 6 screws and evaporator cover.
    2. Pull out the evaporator.
      Fig 7: Locating Screws & Evaporator Cover For Removal
      G01145184Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: At the time of installation, please refer to the following item:
      1. If evaporator is replaced, add compressor oil to the evaporator.
        1. Compressor Oil:  Add 40cc (1.4 fl oz.) ND-OIL 8 or equivalent
  12. Remove heater case.
    1. Remove the 5 screws, clamp and heater case.
      Fig 8: Locating Screws, Clamp & Heater Case For Removal
      G01145185Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002