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 

AC–18

)

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 

AC–3

)

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 

AC–19

)

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 

AC–16

)

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