TOYOTA SUPRA 1995 Service Manual Online

10. REMOVE HEATER TO REGISTER NO. 3 DUCT
Remove the 3 screws and the heater to register No. 3 duct.
11. REMOVE A/C UNIT
(a) Disconnect connectors from the unit.
(b) Remove the 6 bolts and the A/C unit.
INSTALLATION HINT: Pull the drain hose of the A/C unit for-
ward until the yellow paint on the hose is visible in the engine
compartment.
Insert the drain hose into the engine compartment hose until
the matchmarks are aligned.
± AIR CONDITIONING SYSTEMAIR CONDITIONING UNITAC±81

AIR CONDITIONING UNIT DISASSEMBLY
AC±82± AIR CONDITIONING SYSTEMAIR CONDITIONING UNIT

1. REMOVE AIR INLET SERVOMOTOR
(a) Disconnect the connector.
(b) Disconnect the control link.
(c) Remove the 3 screws and the air inlet servomotor.
2. REMOVE BLOWER MOTOR CONTROL RELAY
(a) Disconnect the connector.
(b) Remove the 3 screws and the blower motor control relay.
3. REMOVE BLOWER MOTOR
(a) Disconnect the connector.
(b) Using a torx driver, remove the blower motor.
4. REMOVE EVAPORATOR
(a) Remove the A/C unit wire harness.
(b) Remove the foot air duct.
(c) Remove the A/C unit block joint.
(d) Remove the 6 screws and down and the lower cover.
(e) Remove the 4 screws and the evaporator cover.
(f) Pull out the evaporator.
(g) Pull out the evaporator sensor from the evaporator.
(h) Using a hexagon wrench, remove the 2 bolts and separate
the evaporator and expansion valve.
Torque: 5.4 NVm (55 kgfVcm, 48 in.Vlbf)
INSTALLATION HINT: If the evaporator was replaced, add
compressor oil to the compressor.
Add 40 cc (1.4 fl.oz)
Compressor oil
ND±OIL 8 or equivalent
± AIR CONDITIONING SYSTEMAIR CONDITIONING UNITAC±83

5. REMOVE AIR MIX SERVOMOTO
(a) Remove the defroster duct.
(b) Remove the 3 screws and the water valve cover.
(c) Disconnect the connector.
(d) Disconnect the control link.
(e) Remove the 2 screws and the air mix servomotor.
6. REMOVE HEATER RADIATOR AND WATER VALVE
(a) Remove the 2 screws and the plate.
(b) Remove the 2 screws and the clamp.
(c) Remove the 3 screws.
(d) Pull out the heater radiator with the water valve.
(e) Remove the 2 screws and water valve from the heater
radiator.
7. REMOVE HEATER AIR DUCT
Remove the 2 screws and the defroster air duct.
8. REMOVE VENT AIR DUCT
(a) Disconnect the control link.
(b) Remove the 2 screws and the vent air duct.
9. REMOVE ENGINE COOLANT TEMPERATURE SENSOR
(a) Disconnect the connector.
(b) After pulling off the clamp, pull out the sensor.
10. REMOVE AIR OUTLET SERVOMOTOR
(a) Disconnect the connector.
(b) Remove the 3 screws and the air outlet servomotor. AC±84
± AIR CONDITIONING SYSTEMAIR CONDITIONING UNIT

AIR CONDITIONING UNIT ASSEMBLY
Assembly is in the reverse order of disassembly.
AIR CONDITIONING UNIT INSTALLATION
Installation is in the reverse order of removal.
COMPRESSOR
ON±VEHICLE INSPECTION
Magnetic Clutch:
(See page AC±62)
Compressor:
1. INSTALL MANIFOLD GAUGE SET
(See page AC±11)
2. START ENGINE
3. INSPECT COMPRESSOR FOR METALLIC SOUND
Check that there is metallic sound from the compressor when
the A/C switch is turned ON.
If a metallic sound is heard, replace the compressor assem-
bly.
4. INSPECT PRESSURE OF REFRIGERATION SYSTEM
See ºRefrigeration System Inspection with Manifold Gauge
Setº on page AC±71.
5. STOP ENGINE
6. INSPECT VISUALLY FOR LEAKAGE OF REFRIGERANT
FROM SAFETY SEAL
If there is any leakage, replace the compressor assembly.
± AIR CONDITIONING SYSTEMAIR CONDITIONING UNITAC±85

COMPRESSOR REMOVAL
1. RUN ENGINE AT IDLE SPEED WITH A/C ON FOR
APPROX. 10 MINUTES
2. STOP ENGINE
3. REMOVE BATTERY
4. DISCHARGE REFRIGERANT IN REFRIGERATION
SYSTEM
5. REMOVE DRIVE BELT
Loosen the drive belt tension by turning the drive belt tension-
er clockwise, and remove the drive belt.
6. REMOVE POWER STEERING PUMP
7. DISCONNECT DISCHARGE HOSE AND SUCTION HOSE
FROM COMPRESSOR
NOTICE: Cap the open fittings immediately to keep mois-
ture out of the system.
8. REMOVE COMPRESSOR
(a) Disconnect connector from compressor.
(b) Remove engine under cover.
(d) Remove the 4 bolts, nut and stud bolt.
(d) Remove the compressor. AC±86
± AIR CONDITIONING SYSTEMCOMPRESSOR

MAGNETIC CLUTCH DISASSEMBLY
1. REMOVE PRESSURE PLATE
(a) Using SST and socket wrench, remove the shaft bolt.
SST 07112±76060
Torque: 14 NVm (140 kgfVcm, 10ftVlbf)
(b) Install SST on the pressure plate.
SST 07112±66040
± AIR CONDITIONING SYSTEMCOMPRESSORAC±87

(c) Using SST and socket wrench, remove the pressure plate.
SST 07112±76060
(d) Remove the shims from the pressure plate.
2. REMOVE ROTOR
(a) Using SST, remove the snap ring.
SST 07114±84020
ASSEMBLY CAUTION: Do not spread the point of SST too
wide.
Max width:
23.1 mm
ASSEMBLY NOTICE: The snap ring should be installed
so that its beveled side faces up.
(b) Using a plastic hammer, tap the rotor off the shaft.
DISASSEMBLY NOTICE: Be careful not to damage pulley
when tapping on the rotor. AC±88
± AIR CONDITIONING SYSTEMCOMPRESSOR

3. REMOVE STATOR
(a) Disconnect the stator lead wire from the compressor
housing.
(b) Using SST, remove the snap ring.
SST 07114±84020
ASSEMBLY NOTICE: The snap ring should be installed
so that its beveled side faces up.
(c) Remove the stator.
MAGNETIC CLUTCH ASSEMBLY
Assembly is in the reverse order of disassembly.
CHECK CLEARANCE OF MAGNETIC CLUTCH
(a) Set the dial±gauge to the pressure plate of the magnetic
clutch.
(b) Connect the magnetic clutch lead wire to the positive (+)
terminal of the battery.
± AIR CONDITIONING SYSTEMCOMPRESSORAC±89

(c) Check the clearance between the pressure plate and rotor,
then connect the negative (±) terminal of the battery.
Standard clearance:
0.5 + 0.15 mm (0.020 + 0.0059 in.)
If the clearance is not within specification, adjust the clear-
ance using shims to obtain the standard clearance.
Shim Thickness:
0.1 mm (0.004 in.)
0.3 mm (0.012 in.)
0.5 mm (0.020 in.)
COMPRESSOR INSTALLATION
1. INSTALL COMPRESSOR
(a) Install the stud bolt.
Torque: 26 NVm (265 kgfVcm, 19 ftVlbf)
(b) Install the compressor with 4 bolts and nut.
Torque: 52 NVm (530 kgfVcm, 38 ftVlbf)
(c) Connect the magnetic clutch connector.
(d) Install the engine under cover.
2. CONNECT DISCHARGE HOSE AND SUCTION HOSE TO
COMPRESSOR
NOTICE: Hoses should be connected immediately after
the caps have been removed.
Torque: 10 NVm (100 kgfVcm, 7 ftVlbf)
3. INSTALL POWER STEERING PUMP
Install the power steering pump with 2 bolts.
Torque: 58 NVm (590 kgfVcm, 43 ftVlbf)
4. INSTALL DRIVE BELT
5. INSTALL BATTERY
6. EVACUATE AIR IN REFRIGERATION SYSTEM AND
CHARGE WITREFRIGERANT
Specified amount:
700 + 50 g (24.96 + 1.76 oz.)
7. INSPECT FOR LEAKAGE OF REFRIGERANT
Using a gas leak tester, check for leakage of refrigerant.
If there is leakage, check the tightening torque at the joints.
8. INSPECT A/C OPERATION AC±90
± AIR CONDITIONING SYSTEMCOMPRESSOR