Lexus RX300 (MCU15). Service manual — part 95

N20013

R–Shape

Rotor

Snap Ring

Compressor

AC1743

AC1744

AC0950

SST

N20012

R–Shape

Snap Ring

Compressor

Stator

AC–48

–

AIR CONDITIONING

COMPRESSOR AND MAGNETIC CLUTCH

LEXUS RX300 (RM785E)

NOTICE:
At the time of reassembly, please refer to the following
item.
The snap ring should be installed so that beveled side
faces up.

(b)

Using a plastic hammer, tap the rotor off the shaft.

NOTICE:
Be careful not to damage the pulley when tapping on the ro-
tor.

3.

REMOVE STATOR

(a)

Disconnect the stator lead wire from the compressor
housing.

(b)

Using SST, remove the snap ring.
SST

07114–84020

NOTICE:
At the time of reassembly, please refer to the following
item.
The snap ring should be installed so that its beveled side
faces up.

AC0951

Stator

–

AIR CONDITIONING

COMPRESSOR AND MAGNETIC CLUTCH

AC–49

LEXUS RX300 (RM785E)

(c)

Remove the stator.

AC1N3–01

N04963

Dial Indicator

AC–50

–

AIR CONDITIONING

COMPRESSOR AND MAGNETIC CLUTCH

LEXUS RX300 (RM785E)

REASSEMBLY

Reassembly is in the reverse order of disassembly
(See page AC–47).

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.)

AC1N4–01

N20259

(A)

(B)

–

AIR CONDITIONING

COMPRESSOR AND MAGNETIC CLUTCH

AC–51

LEXUS RX300 (RM785E)

INSTALLATION

1.

INSTALL COMPRESSOR

(a)

Install the compressor with 3 bolts.
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–17, AC–15)

5.

CONNECT NEGATIVE (–) TERMINAL CABLE TO BAT-
TERY

6.

EVACUATE AIR FROM REFRIGERATION SYSTEM
AND CHARGE WITH REFRIGERANT
Specified amount: 650 ± 50 g (22.92 ± 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