Compressor HVAC: Service and Repair
Compressor And Magnetic Clutch:
REMOVAL
1. RUN ENGINE AT IDLE SPEED WITH A/C ON FOR APPROX.1O MINUTES
2. STOP ENGINE
3. DISCONNECT NEGATIVE (-) TERMINAL CABLE FROM BATTERY
4. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM
5. REMOVE DRIVE BELT
6. 1MZ-FE engine models:
REMOVE SUCTION HOSE
a. Remove the suction hose clamping bolt.
b. Disconnect the wire harness clamp.
c. Loosen the nut and bolts and remove the suction hose.
NOTE: Cap the open fittings immediately to keep moisture or dirt out of the system.
7. 1MZ-FE engine models:
DISCONNECT DISCHARGE HOSE
Remove the bolt and disconnect the hose.
NOTE: Cap the open fittings immediately to keep moisture or dirt out of the system.
8. 1MZ-FE engine models:
REMOVE GENERATOR
a. Disconnect the generator connector.
b. Remove the nut, and disconnect the generator wire.
c. Disconnect the wire harness from the clip.
d. Remove the pivot bolt, plate washer, adjusting lock bolt and generator.
9. 5S-FE engine models:
DISCONNECT DISCHARGE AND SUCTION HOSES
Remove the 2 bolts and disconnect both hoses.
NOTE: Cap the open fittings Immediately to keep moisture or dirt out of the system.
10. 5S-FE engine models:
REMOVE COMPRESSOR
a. Disconnect the connector.
b. Remove the 3 bolts and compressor.
11. 1MZ-FE engine models:
REMOVE COMPRESSOR
a. Disconnect the connector.
b. Remove the 2 bolts, nut and drive belt adjusting bar bracket.
c. Remove the 3 bolts and compressor.
INSTALLATION
1. 5S-FE engine models:
INSTALL COMPRESSOR
a. Install the compressor with 3 bolts.
Torque: 25 N.m (250 kgf.cm, 18 ft.lbf)
b. Connect the connector.
2. 1MZ-FE engine models:
INSTALL COMPRESSOR
a. Install the compressor with 3 bolts.
Torque: 25 N.m (250 kgf.cm, 18 ft.lbf)
b. Install the drive belt adjusting bar bracket with 2 bolts and nut.
Torque:
Bolt (A): 25 N.m (250 kgf.cm, 18 ft.lbf)
Bolt (B): 18 N.m (185 kgf.cm, 13 ft.lbf)
Nut: 25 N.m (250 kgf.cm, 18 ft.lbf)
c. Connect the connector.
3. 5S-FE engine models:
CONNECT DISCHARGE AND SUCTION HOSE
Connect the both hoses with the 2 bolts.
Torque: 10 N.m (100 kgf.cm, 7 ft.lbf)
NOTE: Hoses should be connected immediately after the caps have been removed.
HINT: Lubricate 2 new O-rings with compressor oil and install the tubes.
4. 1MZ-FE engine models:
INSTALL GENERATOR
a. Mount generator on the generator bracket with the pivot bolt and adjusting lock bolt. Do not tighten the bolts yet.
b. Connect the generator connector.
c. Connect the generator wire with the nut.
5. 1MZ-FE engine models:
CONNECT DISCHARGE HOSE
Connect the discharge hose with the bolt.
Torque: 10 N.m (100 kgf.cm, 7 ft.lbf)
NOTE: Hoses should be connected immediately after the caps have been removed.
HINT: Lubricate a new O-ring with compressor oil and install the tube.
6. INSTALL SUCTION HOSE
a. Install the suction hose and tighten the bolt and nut.
Torque:
Piping joint: 32 N.m (330 kgf.cm, 24 ft.lbf)
Block joint: 10 N.m (100 kgf.cm, 7 ft.lbf)
HINT: Lubricate 2 new O-rings with compressor oil and install the hose.
b. Install the suction hose clamping bolt.
c. Connect the wire harness clamp.
7. INSTALL AND CHECK DRIVE BELT
8. CONNECT NEGATIVE (-) TERMINAL CABLE TO BATTERY
9. EVACUATE AIR FROM REFRIGERATION SYSTEM AND CHARGE SYSTEM WITH REFRIGERANT
Specified amount: 800 ± 50 g (28.22 ± 1.76 oz.)
10. INSPECT FOR LEAKAGE OF REFRIGERANT
Using a gas leak detector, check for leakage of refrigerant.
If there is leakage, check the tightening torque at the joints.
11. INSPECT A/C OPERATION