Toyota Sequoia (2005). Manual — part 948
AC1KZ–05
I21361
3
3
I21362
1
2
AC–54
–
AIR CONDITIONING
COMPRESSOR AND MAGNETIC CLUTCH
3781
COMPRESSOR AND MAGNETIC
CLUTCH
ON–VEHICLE INSPECTION
1.
SET MANIFOLD GAUGE SET (See page
2.
START ENGINE
3.
INSPECT COMPRESSOR FOR METALLIC SOUND
Check if a metallic sound can be heard from the compressor
when the A/C switch is on.
If a metallic sound cannot be heard, replace the compressor as-
sembly.
4.
INSPECT REFRIGERANT PRESSURE
(See page
5.
STOP ENGINE
6.
INSPECT VISUALLY FOR LEAKAGE OF REFRIGER-
ANT FROM SAFETY SEAL
Using a gas leak detector, check for leakage of refrigerant.
If there is any leakage, replace the compressor assembly.
7.
REMOVE MANIFOLD GAUGE SET
(See page
8.
CHECK FOR LEAKAGE OF GREASE FROM CLUTCH
BEARING
9.
CHECK FOR SIGNS OF OIL ON PRESSURE PLATE
If necessary, repair or replace.
10.
INSPECT MAGNETIC CLUTCH BEARING FOR NOISE
(a)
Start the engine.
(b)
Check if abnormal noise is heard from near the compres-
sor when the A/C switch is OFF.
If abnormal noise is being emitted, replace the magnetic clutch.
11.
INSPECT MAGNETIC CLUTCH OPERATION
(a)
Disconnect the connector.
(b)
Connect the positive (+) lead from the battery to terminal
3 and the negative (–) lead to body ground.
(c)
Check that the magnetic clutch is energized.
If operation is not as specified, replace the magnetic clutch.
12.
INSPECT COMPRESSOR LOCK SENSOR RESIS-
TANCE
(a)
Disconnect the connector.
(b)
Measure the resistance between terminals 1 and 2.
Standard resistance:
165 to 205
Ω
at 20
°
C (68
°
F)
If resistance is not as specified, replace the compressor.
AC1L0–05
I21363
Compressor
Stator
Snap Ring
Rotor
Shim
Pressure Plate
18 (184, 12.3)
10 (100, 7)
Drive Belt
Compressor
O–Ring
N·m (kgf·cm, ft·lbf) : Specified torque
Cooler Bracket
47 (480, 35)
Non–reusable part
25 (255, 18)
–
AIR CONDITIONING
COMPRESSOR AND MAGNETIC CLUTCH
AC–55
3782
COMPONENTS
AC1L1–05
I21454
I21453
AC–56
–
AIR CONDITIONING
COMPRESSOR AND MAGNETIC CLUTCH
3783
REMOVAL
1.
RUN ENGINE AT IDLE SPEED WITH A/C ON FOR
APPROX. 10 MINUTES
2.
STOP ENGINE
3.
DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
4.
DISCHARGE REFRIGERANT FROM REFRIGERATION
SYSTEM
5.
DISCONNECT DISCHARGE AND SUCTION HOSES
Remove the 2 nuts and disconnect both hoses.
NOTICE:
Cap the openings fitting immediately to keep moisture or
dirt out of the system.
6.
REMOVE DRIVE BELT (See page
7.
REMOVE COMPRESSOR
(a)
Disconnect the connector.
(b)
Remove the 3 bolts and nut.
(c)
Remove the cooler bracket.
(d)
Remove the compressor.
AC1L2–05
AC0943
SST
AC0944
SST
AC0945
SST
AC0946
Shim
Pressure
Plate
AC0947
SST
–
AIR CONDITIONING
COMPRESSOR AND MAGNETIC CLUTCH
AC–57
3784
DISASSEMBLY
1.
REMOVE PRESSURE PLATE
(a)
Using SST and a socket wrench, remove the shaft bolt.
SST
07112–76060
Torque: 18 N·m (184 kgf·cm, 12.3 ft·lbf)
(b)
Install SST on the pressure plate.
SST
07112–66040
(c)
Using SST and a socket wrench, remove the pressure
plate.
SST
07112–66040, 07112–76060,
(d)
Remove the shims from the pressure plate.
2.
REMOVE ROTOR
(a)
Using SST, remove the snap ring.
SST
95994–10020
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