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 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 134 of 1807
AC0QL-01
AC-38
- AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
2186 Author: Date:
1997 SUPRA (RM502U)
INSTALLATION
1. INSTALL COMPRESSOR
(a) Install the stud bolt.
Torque: 26 N´m (265 kgf´cm, 19.2 ft´lbf)
(b) Install the compressor with 4 bolts and nut.
Torque: 52 N´m (530 kgf´cm, 38.3 ft´lbf)
(c) Connect the magnetic clutch connector.
(d) Install the engine under cover.
2. CONNECT DISCHARGE AND SUCTION HOSES
Connect the both hoses with 2 bolts.
Torque: 10 N´m (100 kgf´cm, 7 ft´lbf)
NOTICE:
Hose should be connected immediately after the caps have been removed.
HINT:
Lublicate 2 new O-rings with compressor oil and install the hoses.
3. INSTALL POWER STEERING PUMP SET BOLTS
Torque: 58 N´m (590 kgf´cm, 42 ft´lbf)
4. INSTALL DRIVE BELT
(See page AC-17)
5. CONNECT NEGATIVE (-) TERMINAL CABLE TO BATTERY
6. EVACUATE AIR IN REFRIGERATION SYSTEM AND CHARGE EITH REFRIGERANT
Specified amount: 700 ± 50 g (24.96 ± 1.76 oz.)
7. INSPECT FOR LEAKAGE OF REFRIGERANT
Using a gas leak detecter, check for leakage of refrigerant.
If there is leakage, check the tightening torque at the joints.
8. INSPECT A/C OPERATION
Page 135 of 1807
AC0QN-01
N08732
N16963
AC-40
- AIR CONDITIONINGRECEIVER
2188 Author: Date:
1997 SUPRA (RM502U)
REMOVAL
1. DISCHARGE REFRIGERANT FROM REFRIGERATION
SYSTEM
HINT:
At the time of installation, please refer to the following item.
Evacuate air from refrigeration system.
Charge system with refrigerant and inspect for leakage of refrig-
erant.
Specified amount: 700 ± 50 g (24.96 ± 1.76 oz.)
2. REMOVE FRONT BUMPER (See page BO-4)
3. REMOVE RADIATOR SUPPORT UPPER SEAL
Remove the 12 clips and radiator support upper seal.
4. REMOVE LIQUID TUBES FROM RECEIVER
Remove the 2 bolts and both tubes from the receiver.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´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.
Lubricate 2 new O-rings with compressor oil and install the
tube.
5. REMOVE RECEIVER
Remove the holder bolt and pull the receiver downward from
the receiver holder.
HINT:
At the time of installation, please refer to the following item.
If receiver is replaced, add compressor oil to receiver.
Add 10 cc (0.34 fl.oz.)
Compressor oil: ND-OIL 8 or equivalent
6. REMOVE RECEIVER HOLDER
Remove the screw and holder.
Page 137 of 1807
N08731
N08730
N08726
N08727
AC-44
- AIR CONDITIONINGCONDENSER
2192 Author: Date:
1997 SUPRA (RM502U)
6. REMOVE THESE PARTS:
(a) Front bumper (See page BO-4)
(b) Radiator support upper seal (See page AC-40)
(c) Receiver and holder (See page AC-40)
7. DISCONNECT LIQUID TUBE AND DISCHARGE
TUBES
Remove the 3 bolts and 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.
Lubricate 3 new O-rings with compressor oil and install the
tubes.
8. REMOVE CONDENSER
(a) Remove the 2 radiator upper mountings.
(b) Push the radiator toward engine.
(c) Remove the condenser upper mountings.
Page 138 of 1807
N16962
N08733
- AIR CONDITIONINGCONDENSER
AC-45
2193 Author: Date:
1997 SUPRA (RM502U)
(d) Push the condenser toward radiator and remove the liq-
uid tube piping clamp.
Torque: 4.1 N´m (42 kgf´cm, 36 in.´lbf)
(e) Push the condenser toward engine and pull it upward.
HINT:
At the time of installation, please refer to the following item.
If condenser is replaced, add compressor oil to the condenser.
Add 40 cc (1.4 fl.oz.)
Compressor oil: ND-OIL 8 or equivalent
Page 139 of 1807
AC0QS-02
N08379
N08737
- AIR CONDITIONINGEVAPORATOR
AC-47
2195 Author: Date:
1997 SUPRA (RM502U)
EVAPORATOR
REMOVAL
1. DISCHARGE REFRIGERANT IN REFRIGERATION
SYSTEM
HINT:
At the time of installation, please refer to the following item.
Evacuate air from refrigeration system.
Charge system with refrigerant and inspect for leakage of refrig-
erant.
Specifieed amount: 700 ± 50 g (24.96 ± 1.76 oz.)
2. REMOVE ABS ACTUATOR (See page BR-70)
3. DISCONNECT LIQUID TUBE AND SUCTION TUBE
FROM A/C UNIT
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.
Lubricate 2 new O-rings with compressor oil and install the
tubes.
4. REMOVE THESE PARTS:
(a) Glove compartment parts
(b) Heater to register No.4 duct
(c) Front door scuff plate RH
(d) Floor carpet
5. REMOVE ECM
(a) Slide the floor carpet backward.
(b) Remove the 2 nuts and the ECM cover.
(c) Disconnect the connector.
(d) Remove the 2 nuts and the ECM.
Page 140 of 1807
N08735
AC-48
- AIR CONDITIONINGEVAPORATOR
2196 Author: Date:
1997 SUPRA (RM502U)
6. REMOVE EVAPORATOR
(a) Remove the 6 screws and the lower cover.
(b) Remove the 4 screws and the evaporator cover.
(c) Remove the evaporator.
HINT:
At the time of the installation, please refer to the following item.
If evaporator is replaced, add compressor oil to evaporator.
Add 40 cc (1.4 fl.oz.)
Compresser oil: ND-OIL 8 or equivalent
