2001 TOYOTA AVALON Service Repair Manual

AC0951
Stator AC-48
- AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
1970 Author
: Date
:
2001 AVALON (RM808U)
(c) Remove the stator.

AC1N4-02
N20259
(A)
(B)
AC-50
- AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
1972 Author
: Date
:
2001 AVALON (RM808U)
INSTALLATION
1. INSTALL COMPRESSOR
(a) Install the compressor with 3 nuts.
Torque: 25 N´m (250 kgf´cm, 18 ft´lbf)
(b) Install the generator drive belt adjusting bar bracket with
2 bolts and a nut.
Torque:
Bolt (A): 18 N´m (185 kgf´cm, 13 ft´lbf)
Bolt (B): 25 N´m (250 kgf´cm, 18 ft´lbf)
Nut: 25 N´m (250 kgf´cm, 18 ft´lbf)
2. 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.
3. CONNECT DISCHARGE AND SUCTION HOSES
Connect both hoses with the bolt and nut.
Torque: 10 N´m (100 kgf´cm, 7 ft´lbf)
NOTICE:
Hoses should be connected immediately after the caps
have been removed.
HINT:
Lubricate 2 new O-ring with compressor oil and install them to
the tube.
4. INSTALL AND CHECK DRIVE BELT
(See page AC-19, AC-17)
5. CONNECT NEGATIVE (-) TERMINAL CABLE TO BAT-
TERY
6. EVACUATE AIR FROM REFRIGERATION SYSTEM
AND CHARGE WITH REFRIGERANT
Specified amount: 600 ± 50 g (21.16 ± 1.76 oz.)
7. 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.
8. INSPECT A/C OPERATION

AC2G4-01
I12297
12
I12298
3 AC-42
- AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
1964 Author
: Date
:
2001 AVALON (RM808U)
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: 65 - 125 W at 20 °C (68 °F)
If resistance is not as specified, replace the sensor.
5. CHECK FOR LEAKAGE OF GREASE FROM CLUTCH
BEARING
6. CHECK FOR SIGNS OF OIL ON PRESSURE PLATE OR
ROTOR
7. 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.
8. 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.

AC1N3-02
N04963
Dial Indicator
- AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
AC-49
1971 Author
: Date
:
2001 AVALON (RM808U)
REASSEMBLY
Reassembly is in the reverse order of disassembly (See
page AC-46).
AFTER REASSEMBLY, CHECK MAGNETIC CLUTCH
CLEARANCE
(a) Set the dial indicator to the pressure plate of the magnetic
clutch.
(b) Connect the magnetic clutch lead wire to the positive (+)
terminal of the battery.
(c) Check the clearance between the pressure plate and ro-
tor when connecting the negative (-) terminal to the bat-
tery.
Standard clearance:
0.5 ± 0.15 mm (0.020 ± 0.0059 in.)
If the clearance is not within the standard, adjust the clearance
using shims to obtain the standard.
Shim thickness:
0.1 mm (0.004 in.)
0.3 mm (0.012 in.)
0.5 mm (0.020 in.)

AC1N1-02
I12935
P19978
N20259
AC-44
- AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
1966 Author
: Date
:
2001 AVALON (RM808U)
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 DRIVE BELT
(See page AC-18)
6. DISCONNECT DISCHARGE AND SUCTION HOSES
Remove the 2 nuts and disconnect the both hoses.
NOTICE:
Cap the open fittings immediately to keep moisture or dirt
out of the system.
7. REMOVE GENERATOR
(a) Disconnect the generator connector.
(b) Remove the nut, and disconnect the generator wire.
(c) Disconnect the wire harness from the clamp.
(d) Remove the pivot bolt, adjusting lock bolt and generator.
8. REMOVE COMPRESSOR
(a) Disconnect the connector.
(b) Disconnect the wire harness clamp.
(c) Remove the 2 bolts, nut and drive belt adjusting bar
bracket.

I12947
- AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
AC-45
1967 Author
: Date
:
2001 AVALON (RM808U)
(d) Remove the 3 bolts and compressor.

I12944
No. 2 Cooling
Fan Relay
AC20V-02
I12945
No. 3 Cooling
Fan Relay
N23635
35
4 1 2
I05027
5
12
3
1 3
2 5
AC-70
- AIR CONDITIONINGCOOLING FAN RELAY
1992 Author
: Date
:
2001 AVALON (RM808U)
COOLING FAN RELAY
INSPECTION
1. REMOVE NO. 2 COOLING FAN RELAY FROM RELAY
BLOCK NO. 8
2. REMOVE NO. 3 COOLING FAN RELAY FROM RELAY
BLOCK NO. 8
3. INSPECT NO. 2 COOLING FAN RELAY
(Marking: A.C FAN NO. 2) CONTINUITY
ConditionTester connectionSpecified condition
Constant1 - 2
3 - 4Continuity
Apply B+ between
terminals 1 and 2.3 - 5Continuity
If continuity is not as specified, replace the relay.
4. INSPECT NO. 3 COOLING FAN RELAY
(Marking: A.C FAN NO. 3) CONTINUITY
ConditionTester connectionSpecified condition
Constant1 - 2Continuity
Apply B+ between
terminals 1 and 2.3 - 5Continuity
If continuity is not as specified, replace the relay.

AC28I-02
I12949I12950
I12965
N´m (kgf´cm, ft´lbf) : Specified torque

Non-reusable part
Compressor oil ND-OIL 8 or equivalent
5.4 (55, 48 in.´lbf)
5.4 (55, 48 in.´lbf)
Discharge Hose
Liquid Tube
O-ringRadiator Upper SupportCondenser
Radiator Upper Support
Condenser
Dryer
Filter
Cap
12.3 (125, 9)

O-ring
AC-52
- AIR CONDITIONINGCONDENSER
1974 Author
: Date
:
2001 AVALON (RM808U)
COMPONENTS