Toyota Tundra. Manual — part 2452

INSPECTION

1. INSPECT MAGNET CLUTCH ASSEMBLY

a. Check the magnet clutch operation.

1. Confirm that the magnet clutch hub and magnet clutch rotor lock when the battery positive

lead is connected to terminal 3 of the magnet clutch, and the negative lead is connected to the
ground wire.

If the operation is not as specified, replace the magnet clutch assembly.

b. Measure the resistance.

c. Measure the resistance between terminals 1 and 2.

Standard Resistance:

65 to 125 ohms at 20°C (68°F)

If the resistance is not as specified, replace the cooler compressor assembly.

Fig. 280: Measuring Resistance Between Terminals 1 And 2
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

REASSEMBLY

2009 Toyota Tundra

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1. INSTALL MAGNET CLUTCH ASSEMBLY

a. Install the magnet clutch stator with the parts shown in the illustration matched.

Fig. 281: Identifying Magnet Clutch Stator
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Using a snap ring expander, install a new snap ring with the chamfered side facing up.

Fig. 282: Installing Snap Ring
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

c. Connect the connector.

d. Using a snap ring expander, install the magnet clutch rotor and a new snap ring with the chamfered

side facing up.

NOTE:

Do not damage the seal cover of the bearing when installing the snap
ring.

2009 Toyota Tundra

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Fig. 283: Installing Magnet Clutch Hub Bolt
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

e. Install the compressor washer(s) and magnet clutch hub.

f. Using SST, hold the magnet clutch hub and install the bolt.

SST 09985-00270

Torque: 18 N*m (184 kgf*cm, 13 ft.*lbf)

Fig. 284: Installing Magnet Clutch Hub Bolt
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2. INSTALL COOLER BRACKET

a. Install the cooler bracket with the screw.

NOTE:

Do not change the combination of the compressor washer(s) used
before disassembly.

NOTE:

Make sure that there is no foreign matter or oil on the compressor
shaft, bolt, and clutch hub.

2009 Toyota Tundra

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Fig. 285: Locating Cooler Bracket With Screw
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Attach the clamp.

3. INSPECT MAGNET CLUTCH CLEARANCE

a. Clamp the cooler compressor in a vise.

b. Set the dial indicator to the magnet clutch hub.

c. Connect the battery positive lead to terminal 3 of the magnet clutch connector and the negative lead

to the ground wire. Turn the magnet clutch on and off and measure the clearance.

Standard clearance:

0.35 to 0.60 mm (0.014 to 0.024 in.)

If the measured value is not within the standard clearance, remove the magnet clutch hub and adjust
the clearance using compressor washers to obtain the standard clearance.

Compressor washer thickness:

0.1 mm (0.004 in.)

0.3 mm (0.012 in.)

0.5 mm (0.020 in.)

NOTE:

Adjustment should be performed with 3 or fewer magnet clutch
washers.

2009 Toyota Tundra

2009 HVAC Air Conditioning - Tundra