Air Conditioning Unit: Disassembly

REMOVE HEATER TO REGISTER DUCT CENTER
1. Release the 4 claws and remove the heater to register duct center.
Fig 1: Identifying Claws On Heater To Register Duct Center
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REMOVE AIR OUTLET CONTROL SERVO MOTOR
1. Remove the 3 screws and air outlet control servomotor.
Fig 2: Identifying Air Outlet Control Servomotor Screws
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REMOVE AIR MIX CONTROL SERVO MOTOR
1. LH side:
  Remove the 3 screws and air mix control servomotor.
  
  Fig 3: Identifying Air Mix Control Servomotor Screws (LH Side)
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2. RH side:
Remove the 3 screws and air mix control servomotor.

Fig 4: Identifying Air Mix Control Servomotor Screws (RH Side)
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REMOVE EVAPORATOR TEMPERATURE SENSOR
1. Release the clamp and connector.
2. Release the 2 claws and remove evaporator temperature sensor.
Fig 5: Identifying Evaporator Temperature Sensor Connector With Claws
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REMOVE HEATER RADIATOR UNIT SUB-ASSEMBLY
1. Remove the 2 screws and piping cover.
  
  Fig 6: Identifying Piping Cover Screws
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2. Remove the screw and bracket.
  
  Fig 7: Identifying Piping Cover Screws And Bracket
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3. Remove the heater radiator unit sub-assembly.
NOTE: Prepare a drain pan or cloth for cooling water leaks.

Fig 8: Identifying Heater Radiator Unit Sub-Assembly
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REMOVE AIR CONDITIONING TUBE ASSEMBLY
1. Remove the packing.
  
  Fig 9: Identifying Air Conditioning Tube Assembly Packing
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2. Using a hexagon wrench 4.0 mm, remove the 2 hexagon bolts and air conditioning tube assembly.
3. Remove the 2 O-rings from the air conditioning tube assembly.
Fig 10: Identifying Air Conditioning Tube Assembly With Hexagon Bolts
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REMOVE COOLER EXPANSION VALVE
1. Remove the cooler expansion valve from the cooler evaporator sub-assembly No.1.
Fig 11: Identifying Cooler Expansion Valve
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REMOVE COOLER EVAPORATOR NO.1 SUB-ASSEMBLY
1. Remove the 3 screws and air duct sub-assembly.
  
  Fig 12: Locating Air Duct Sub-Assembly Screws
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Release the 4 claws and remove the air duct sub-assembly.
  
  Fig 13: Identifying Claws On Air Duct Sub-Assembly
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3. Remove the 11 screws and separate the heater case.
4. Remove the cooler evaporator No.1 sub-assembly.
  
  Fig 14: Locating Heater Case Screws
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5. Remove the 2 O-rings from the cooler evaporator No.1 sub-assembly.
Fig 15: Identifying Cooler Evaporator No.1 Sub-Assembly O-Rings
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