TOYOTA SUPRA 1997 Service Repair Manual
Page 121 of 1807
AC0QA-01
AC-22
- AIR CONDITIONINGREFRIGERANT LINE
2170 Author: Date:
1997 SUPRA (RM502U)
REPLACEMENT
1. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM
2. REPLACE FAULTY TUBE OR HOSE
NOTICE:
Cap the open fittings immediately to keep moisture or dirt out of the system.
3. TIGHTEN JOINT OF BOLT OR NUT AT SPECIFIED TORQUE
NOTICE:
Connections should not be torqued tighter than the specified torqued.
Part tightenedN´mkgf´cmft´lbf
Receiver x Liquid tube5.45548 in.´lbf
Condencer x Discharge hose101007
Condenser x Liquid tube101007
Compressor x Discharge hose101007
Compressor x Suction hose101007
Evaporator x Expansion valve5.45548 in.´lbf
A/C unit x Liquidand suction tube101007
Discharge lines101007
Liquid lines101007
Suction lines101007
4. EVACUATE AIR IN REFRIGERATION SYSTEM AND CHARGEWITH REFRIGERANT
Specified amount: 700 ± 50 g (24.96 ± 1.76 oz.)
5. INSPECT FOR LEAKAGE OF REFRIGERANT
Using a gas leak detector, check for leakage of refrigerant.
6. INSPECT AIR CONDITIONING OPERATION
Page 122 of 1807
AC0QB-02
I00911
Instrument Panel
Reinforcement
No. 1 Brace
Water Hose
Insulator Retainer
Heater to Register No. 3 Duct
Suction Tube
Liquid Tube
A/C Unit O-ring
Non-reusable part
- AIR CONDITIONINGAIR CONDITIONING UNIT
AC-23
2171 Author: Date:
1997 SUPRA (RM502U)
AIR CONDITIONING UNIT
COMPONENTS
Page 123 of 1807
N11671
Defroster Nozzle
Water Valve CoverPlate
Water Valve
Heater Radiator
A/C Unit
Block Joint
Blower Motor
Control Relay
Blower Motor
Lower CaseEvaporator
Expansion
Valve Air Inlet
Servomotor
Evaporator Temperature
Sensor Heater Air Duct
Evaporator CoverVent Air DuctEngine Coolant
Temperature
SensorAir Outlet
ServomotorAir Mix
Servomotor AC-24
- AIR CONDITIONINGAIR CONDITIONING UNIT
2172 Author: Date:
1997 SUPRA (RM502U)
Page 124 of 1807
AC0QC-01
N08378
I03519
- AIR CONDITIONINGAIR CONDITIONING UNIT
AC-25
2173 Author: Date:
1997 SUPRA (RM502U)
REMOVAL
1. DISCHARGE REFRIGERANT FROM REFRIGERANT
SYSTEM
HINT:
At the time of installation, please refer to the following item.
Evacuate air from refrigeration system.
Charge system with the refrigerant and inspect for leakage of
refrigerant.
Specified amount: 700 ± 50 g (24.96 ± 1.76 oz.)
2. DRAIN ENGINE COOLANT FROM RADIATOR
HINT:
It is not necessary to drain out all coolant.
3. REMOVE THESE PARTS:
(a) Engine wire harness bracket mounting bolt
(b) Brake tube bracket mounting bolts
4. DISCONNECT WATER HOSE FROM HEATER RADIA-
TOR PIPES
(a) Using priers, grip the claw of the hose clip and slide the
clip along the hose.
(b) Disconnect the water hoses from heater radiator pipes.
5. REMOVE INSULATOR RETAINER
Remove the 2 bolts and the insulator retainer.
Page 125 of 1807
N08379
N08536
N09037
I03520
AC-26
- AIR CONDITIONINGAIR CONDITIONING UNIT
2174 Author: Date:
1997 SUPRA (RM502U)
6. REMOVE LIQUID TUBE AND SUCTION TUBE
(a) Remove the ABS actuator.
(See page BR-70)
(b) Remove the bolt and slide the plate, then disconnect the
both tubes.
Torque: 10 N´m (100 kgf´cm, 7 ft´lbf)
NOTICE:
Cap the open fittings immediately to keep moisture or dirt
out of the system.
HINT:
At the time of installation, please refer to the following item.
Lubricante 2 new O-rings with compressor oil and install tubes.
7. REMOVE PLATE COVER
Remove the 2 bolts and the plate cover.
8. REMOVE INSTRUMENT PANEL AND REINFORCE-
MEN
(See page BO-50)
9. REMOVE HEATER TO REGISTER NO.3 DUCT
Remove the 3 screws and the heater to radister No.3 duct.
10. REMOVE A/C UNIT
(a) Disconnect connecters from the A/C unit.
(b) Remove the 6 bolts and the A/C unit.
HINT:
At the time of installation, please refer to the following item.
Pull the drain hose of the A/C unit forward 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.
Page 126 of 1807
AC0QD-02
N08381
N08398
Expansion valve
N08384
- AIR CONDITIONINGAIR CONDITIONING UNIT
AC-27
2175 Author: Date:
1997 SUPRA (RM502U)
DISASSEMBLY
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 MOTER
(a) Disconnect the connector.
(b) Remove the 3 screws and blower motor.
4. REMOVE EVAPORATOR
(a) Remove the 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.
HINT:
At the time of reassembly, please refer to the following item.
If the evaporator is replaced, add compressor oil to compressor.
Add 40cc (1.4 fl.oz)
Compressor oil: ND-OIL 8 or equivalent
(g) Pull out the evaporator temp.sensor from the evaporator.
(h) Using a hexagon wrench, remove the 2 bolts and sepa-
rate the evaporator and expansion valve.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
HINT:
At the time of reassembly, please refer to the following item.
Lubricate 4 new O-rings with compressor oil and install the
tubes.
5. REMOVE AIR MIX SERVOMOTOR
(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 screws and the air mix servomotor.
Page 127 of 1807
N08403
AC-28
- AIR CONDITIONINGAIR CONDITIONING UNIT
2176 Author: Date:
1997 SUPRA (RM502U)
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 ra-
diator.
7. REMOVE HEATER AIR DUCT
Remove the 2 screws and the defroster air duct.
8. REMOVE AIR VENT DUCT
(a) Disconnect the control link.
(b) Remove the 2 screws and the vent air duct.
9. REMOVE ENGINE COOLANT TEMPERATURE SEN-
SOR
(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.
Page 128 of 1807
AC0QG-01
I03523
1
2
I035214
- AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
AC-31
2179 Author: Date:
1997 SUPRA (RM502U)
COMPRESSOR AND MAGNETIC
CLUTCH
ON-VEHICLE INSPECTION
1. INSPECT COMPRESSOR FOR METALLIC SOUND
Check there is abnormal metallic sound from the compressor
when the A/C switch is ON.
If abnormal metallic sound is heard, replace the compressor as-
sembly.
2. INSPECT REFRIGERANT PRESSURE
(See page AC-3)
3. INSPECT VISUALLY FOR LEAKAGE OF REFRIGER-
ANT
Using a gas leak detector, check for leakage of refrigerant.
If there is any leakage, replace the compressor assembly.
4. INSPECT COMPRESSOR LOCK SENSOR RESIS-
TANCE
(a) Disconnect the connector.
(b) Measure resistance between terminals 1 and 2.
Standard resistance:
160 - 210 W at 20°C (68°F)
If resistance is not as specified, replace the sensor.
5. MAKE THESE VISUAL CHECKS:
(a) Leakage of grease from the clutch bearing
(b) Signs of oil on the pressure plate or rotor
6. INSPECT MAGNETIC CLUTCH BEARING FOR NOISE
(a) Start engine.
(b) Check for abnormal noise from the compressor when the
A/C switch is OFF.
If abnormal noise is being emitted, replace the magnetic clutch.
7. INSPECT MAGNETIC CLUTCH OPERATION
(a) Disconnect the connector.
(b) Connect the positive (+) lead from the battery to terminal
4 and the negative (-) lead to the body ground.
(c) Check that the magnetic clutch energized.
If operation is not as specified, replace the magnetic clutch.
Page 129 of 1807
AC2SS-01
I03512
I03512
Drive Belt
Power Steering
Pump Bracket
Engine Under CoverDischarge Hose Power Steering
Pump
Compressor Stator
Rotor
Shim Pressure Plate
Suction Hose
Compressor
Snap Ring
Snap Ring
Non-reusable part AC-32
- AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
2180 Author: Date:
1997 SUPRA (RM502U)
COMPONENTS
Page 130 of 1807
AC0QI-01
I03524
N08004
N08005
- AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
AC-33
2181 Author: Date:
1997 SUPRA (RM502U)
REMOVAL
1. RUN ENGINE AT IDLE SPEED WITH A/C ON FOR
APPROX. 10 MINUTES
2. STOP ENGINE
3. DISCONNECT NEGATIVE (- ) TERMINAL CABLE
FROM BATTERY
4. DISCHARGE REFRIGERANT FROM REFRIGERATION
SYSTEM
5. REMOVE ENGINE UNDER COVER
6. REMOVE DRIVE BELT
(See page AC-16)
7. DISCONNECT DISCHARGE AND SUCTION HOSES
FROM COMPRESSOR
Remove the 2 nuts and disconnect the both hoses.
NOTICE:
Cap the open fittings immediately to keep moisture or dirt
out of the system.
8. REMOVE COMPRESSOR
(a) Disconnect the connector.
(b) Remove the 4 bolts and nut.
(c) Using a tory socket (E10), remove the stud bolt and com-
pressor.