Lexus GS300/400 (2000 year). Manual — part 9
AC0WS–01
–
AIR CONDITIONING
BLOWER UNIT
AC–33
2718
INSTALLATION
Installation is in the reverse order of removal (See page
AC0WT–01
I02373
GS300:
Ω
1
2
I02374
GS400:
Ω
1
2
AC–34
–
AIR CONDITIONING
COMPRESSOR AND MAGNETIC CLUTCH
2719
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
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:
570 – 1,050
Ω
at 20
°
C (68
°
F)
If resistance is not as specified, replace the compressor.
I02376
GS300:
3
I02375
GS400:
3
–
AIR CONDITIONING
COMPRESSOR AND MAGNETIC CLUTCH
AC–35
2720
5.
MAKE THESE VISUAL CHECKS:
(a)
Leakage of grease from the clutch bearing.
(b)
Signs of oil on the pressure plate or rotor.
6.
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 rotor of magnetic
clutch.
7.
INSPECT MAGNETIC CLUTCH OPERATION
(a)
Disconnect the connector.
(b)
Connect the positive (+) lead from the battery to terminal
3 and the negative (–) lead to the body ground.
(c)
Check that the magnetic clutch is energized.
If operation is not as specified, replace the magnetic clutch.
AC0WU–01
I02379
GS300:
PS Pump
PS Pump Bracket
52 (530, 38)
Compressor Bracket
52 (530, 38)
58 (590, 43)
Drive Belt
52 (530, 38)
O–Ring
Discharge Hose
10 (100, 7)
Suction Hose
10 (100, 7)
O–Ring
26 (265, 19)
52 (530, 38)
52 (530, 38)
Engine Under Cover
GS400:
Drive Belt
10 (100, 7)
10 (100, 7)
Discharge Hose
Suction Hose
O–Ring
O–Ring
O–Ring
10 (100, 7)
49 (500, 36)
29 (300, 22)
Stay
Engine Under Cover
Compressor
N·m (kgf·cm, ft·lbf) : Specified torque
Non–reusable part
58 (590, 43)
Compressor
52 (530, 38)
AC–36
–
AIR CONDITIONING
COMPRESSOR AND MAGNETIC CLUTCH
2721
COMPONENTS
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