Air Conditioning: Overhaul Lexus GS III

DISASSEMBLY

1. REMOVE THESE PARTS: Wire harness Drain hose
2. REMOVE HEATER RADIATOR Remove the screw and clamp. Pull out the heater radiator.
3. REMOVE BLOWER MOTOR CONTROL RELAY Remove the screw and blower motor control relay.
4. REMOVE AIR MIX SERVOMOTORS Remove the 6 screws and both servomotors.
5. REMOVE AIR OUTLET SERVOMOTOR Remove the 2 screws and servomotor.
6. REMOVE EXPANSION VALVE Pry out the packing. HINT: At the time of reassembly, please refer to the following item. Do not reuse the packing. Using SST, remove the 2 bolts, then separate the expansion valve, tube connector and tube and accessory. SST 07110-61050 Torque: 4.1N.m (42 kgf.cm, 36 in.lbf) HINT: At the time of reassembly, please refer to the following item. Lubricate 4 new O-rings with compressor oil and install them to the valve.
7. REMOVE EVAPORATOR TEMPERATURE SENSOR Disconnect the wire harness clamp. Using a screwdriver, pull out the sensor with bracket plate. HINT: Tape the screwdriver tip before use. Release the 2 claws and sensor from bracket plate.
8. REMOVE EVAPORATOR Using SST, remove the 2 bolts and tube and accessory. SST 07110-61050 Torque: 4.1 N.m (42 kgf.cm, 36 in.lbf) HINT: At the time of reassembly, please refer to the following item. Lubricate 2 new O-rings with compressor oil and install them to the tube. Remove the 4 screws and cover. Pull out the evaporator. Remove the plate from evaporator. HINT: At the time of reassembly, please refer to the following item. If evaporator is replaced, add compressor oil to evaporator. Add 40 cc (1.4 fl.oz.) Compressor oil: ND-OIL 8 or equivalent
9. REMOVE INSULATOR FROM HEATER CASE
10. REMOVE AIR DUCT Remove the 4 screws and duct.

REASSEMBLY

Reassembly is in the reverse order of disassembly (See DISASSEMBLY ).

1. REMOVE AIR REFINER FILTER Release the 4 claws and remove the cover. Pull out the air refiner filter.
2. REMOVE AIR INLET SERVOMOTOR Remove the 3 screws and servomotor.
3. REMOVE BLOWER MOTOR Remove the 3 screws and blower motor.
4. REMOVE BRACKET Remove the screw and bracket.

Reassembly is in the reverse order of disassembly (See DISASSEMBLY ).

Reassembly is in the reverse order of disassembly

(See DISASSEMBLY ).

Scheme 227

1. Set the dial indicator to the pressure plate of the magnetic clutch.
2. Connect the magnetic clutch lead wire to the positive (+) terminal of the battery.
3. Check the clearance between the pressure plate and rotor when connecting the negative (-) terminal to the battery. Standard clearance: 0.5 +/- 0.15 mm (0.020 +/- 0.0059 in.) If the clearance is not within the standard clearance, adjust the clearance using shims to obtain the standard clearance. Shim thickness: 0.1 mm (0.004 in.) 0.3 mm (0.012 in.) 0.5 mm (0.020in.)

1. REMOVE COOLING FANS Remove the 2 nuts and both fans.
2. REMOVE COOLING FAN MOTORS Disconnect wire harness clamps. Remove the 6 screws and both motors.

Reassembly is in the reverse order of disassembly (See DISASSEMBLY ).