RX400h · Service Manual HEATER & AIR CONDITIONING SYSTEM

DISASSEMBLY

Removal / installation


1. REMOVE HEATER TO REGISTER DUCT CENTER

  1. E110816
    Release the 4 claws and remove the heater to register duct center.


2. REMOVE AIR OUTLET CONTROL SERVOMOTOR

  1. I035859
    Remove the 3 screws and air outlet control servomotor.


3. REMOVE AIR MIX CONTROL SERVOMOTOR

  1. I035860
    LH side:
    Remove the 3 screws and air mix control servomotor.

  1. I035861
    RH side:
    Remove the 3 screws and air mix control servomotor.


4. REMOVE EVAPORATOR TEMPERATURE SENSOR

  1. E110817
    Release the clamp and connector.

  1. Release the 2 claws and remove evaporator temperature sensor.


5. REMOVE HEATER RADIATOR UNIT SUB-ASSEMBLY

  1. I035862
    Remove the 2 screws and piping cover.

  1. I037250
    Remove the screw and bracket.

  1. I035863
    Remove the heater radiator unit sub-assembly.

    NOTICE:
    Prepare a drain pan or cloth for cooling water leaks.


6. REMOVE AIR CONDITIONING TUBE ASSEMBLY

  1. I037364E01
    Remove the packing.

  1. I035866
    Using a hexagon wrench 4.0 mm, remove the 2 hexagon bolts and air conditioning tube assembly.

  1. Remove the 2 O-rings from the air conditioning tube assembly.


7. REMOVE COOLER EXPANSION VALVE

  1. I035865
    Remove the cooler expansion valve from the cooler evaporator sub-assembly No.1.


8. REMOVE COOLER EVAPORATOR NO.1 SUB-ASSEMBLY

  1. I035867
    Remove the 3 screws and air duct sub-assembly.

  1. E110818
    Release the 4 claws and remove the air duct sub-assembly.

  1. I035869
    Remove the 11 screws and separate the heater case.

  1. Remove the cooler evaporator No.1 sub-assembly.

  1. I033489
    Remove the 2 O-rings from the cooler evaporator No.1 sub-assembly.

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