1996 TOYOTA LAND CRUISER Ect

AC2QS−01
Z17942
Hose ”A”Hose ”B”
Z17943
Hose Clip
Heater
Radiator Pope Paint Mark
Water Hose Hose ”A”Upper
FR
RH Hose ”B”
RH
FR
Marking 45 ± 10° 45
°
10 °
N06494
AC−28
−
AIR CONDITIONING HEATER UNIT
1355
Author: Date:
1996 LAND CRUISER (RM451U)
HEATER UNIT
REMOVAL
1. REMOVE COOLING UNIT (See page AC−24)
2. DRAIN ENGINE COOLANT FROM RADIATOR
HINT:
It is not necessary to drain out all the coolant.
3. DISCONNECT WATER HOSES FROM HEATER RA- DIATOR PIPES
(a) Grip the claws of the hose clip with pliers and slide the clip
along the hose to a place where it does not clamp the
hose to the pipe.
(b) Disconnect the water hoses.
HINT:
Push the water hose onto the heater radiator pipe as far
as the ridge on the pipe.
Install the hose clip in a position, as shown in the illustra-
tion.
4. REMOVE PIPE GROMMETS
5. REMOVE INSTRUMENT PANEL SAFETY PAD (See page BO−76 )
6. REMOVE INSTRUMENT PANEL REINFORCEMENT
(See page BO−76 )
7. REMOVE HEATER UNIT
(a) Remove the 3 screws and defroster nozzle.(...~---------I I
I II II I
I II IIIv-
N02485
N18179N18181
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AC2R1−03
−
AIR CONDITIONING BLOWER UNIT
AC−31
1358
Author: Date:
1996 LAND CRUISER (RM451U)
BLOWER UNIT
REMOVAL
1. REMOVE INSTRUMENT PANEL AND REINFORCE-
MENT (See page BO−76)
2. REMOVE COOLING UNIT (See page AC−24)
3. REMOVE BLOWER UNIT
(a) Disconnect the connectors.
(b) Remove the bolt and 2 nuts, then remove the blower unit.
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AC2R5−01
N06158
−
AIR CONDITIONING COMPRESSOR AND MAGNETIC CLUTCH
AC−33
1360
Author: Date:
1996 LAND CRUISER (RM451U)
COMPRESSOR AND MAGNETIC
CLUTCH
ON−VEHICLE INSPECTION
1. INSTALL MANIFOLD GAUGE SET (See page AC−18 )
2. START ENGINE
Run the engine at 1,500 rpm.
3. INSPECT COMPRESSOR FOR METALLIC SOUND
Check if there is a metallic sound from the compressor when the
A/C switch is on.
If metallic sound is heard, replace the compressor assembly.
4. INSPECT REFRIGERANT PRESSURE (See page AC−5 )
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. MAKE THESE VISUAL CHECKS:
(a) Leakage of grease from the clutch bearing.
(b) Signs of oil on the pressure plate or rotor. Repair or replace, as necessary.
9. INSPECT MAGNETIC CLUTCH BEARING FOR NOISE
(a) Start engine.
(b) Check for abnormal noise from near the compressor when the A/C switch is OFF.
If abnormal noise is being emitted, replace the magnetic clutch.
10. INSPECT MAGNETIC CLUTCH
(a) Disconnect the connector from the magnetic clutch.
(b) Connect the positive (+) lead from the battery to the termi-
nal on the magnetic clutch connector 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.
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AC2R7−04
AC0943
SST
AC0944
SST
AC0945
SST
−
AIR CONDITIONING COMPRESSOR AND MAGNETIC CLUTCH
AC−35
1996 LAND CRUISER (RM451U)
DISASSEMBLY
1. RUN ENGINE AT IDLE SPEED WITH A/C SWITCH ON
FOR 10 MINUTES
2. STOP ENGINE
3. DISCONNECT NEGATIVE ( −) TERMINAL CABLE
FROM BATTERY
4. DISCHARGE REFRIGERANT FROM REFRIGERA TION
SYSTEM
5. DISCONNECT DISCHARGE AND SUCTION HOSES
Remove the 2 bolts and disconnect the both hoses.
NOTICE:
Cap the open fittings immediately to keep the moisture or
dirt out of the system.
6. REMOVE ENGINE UNDER COVER
7. REMOVE DRIVE BELT (See page AC−16)
8. REMOVE COMPRESSOR
(a) Disconnect the connector.
(b) Remove the 4 bolts and pull the compressor upward.
9. REMOVE COMPRESSOR (See page AC−35 )
10. REMOVE PRESSURE PLATE
(a) Using SST and a socket wrench, remove the shaft bolt. Torque: 13.2 N·m (135 kgf·cm, 9 ft·lbf)
SST 07112 −76060
(b) Install a SST on the pressure plate. SST 07112 −66040
(c) Using SST and a socket wrench, remove the pressure plate.
SST 07112 −76060
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AC0946
ShimPressure
Plate
AC0947
SST
N20013
Snap Ring
R−Shape Compressor
AC1743
AC1744
AC−36
−
AIR CONDITIONING COMPRESSOR AND MAGNETIC CLUTCH
1996 LAND CRUISER (RM451U)
(d) Remove the shims from the pressure plate.
11. REMOVE ROTOR
(a) Using SST, remove the snap ring.
SST 07114 −84020
NOTICE:
The snap ring should be installed so that its 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.
12. REMOVE STATOR
(a) Disconnect the stator lead wire from the compressor housing.
p
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AC2R8−01
N04963
AC−38
−
AIR CONDITIONING COMPRESSOR AND MAGNETIC CLUTCH
1996 LAND CRUISER (RM451U)
REASSEMBLY
1. INSTALL COMPRESSOR
(a) Install the compressor with the 4 bolts. Torque: 25 N·m (250 kgf·cm, 18 ft·lbf)
(b) Connect the connector.
2. CONNECT DISCHARGE AND SUCTION HOSES 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 −rings with compressor oil and install the
hoses.
3. INSTALL AND INSPECT DRIVE BELT (See page AC−17 )
4. INSTALL ENGINE UNDER COVER
5. CONNECT NEGATIVE ( −) TERMINAL CABLE TO BAT-
TERY
6. EVACUATE AIR FROM REFRIGERATION SYSTEM
7. CHARGE SYSTEM WITH REFRIGERANT AND IN- SPECT FOR LEAKAGE OF REFRIGERANT
Specified amount:
850 ± 50 g (29.98 ± 1.76 oz.)
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
Reassembly is in the reverse order of disassembly (See
page AC−35 ).
9. CHECK CLEARANCE OF MAGNETIC CLUTCH
(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 clearance, adjust the
clearance using shims to obtain the standard clearance. Shim Thickness:
0.1 mm (0.004 in.)
0.3 mm (0.012 in.)
0.5 mm (0.020 in.)
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AC2RB−01
−
AIR CONDITIONING RECEIVER
AC−39
1366
Author: Date:
1996 LAND CRUISER (RM451U)
RECEIVER
ON−VEHICLE INSPECTION
INSPECT FITTINGS FOR LEAKAGE
Using a gas leak detector, check for leakage.
If there is leakage, check the tightening toque at the joints.
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AC2RC−01
N13975
AC−40
−
AIR CONDITIONING RECEIVER
1996 LAND CRUISER (RM451U)
REMOVAL
1. DISCHARGE REFRIGERANT FROM REFRIGERA TION
SYSTEM
HINT:
At the time of installation, refer to the following procedure.
Evacuate air from refrigeration system.
Charge system with refrigerant and inspect for leakage of
refrigerant.
Specified amount:
850 ± 50 g (29.98 ± 1.76 oz.)
2. DISCONNECT 2 LIQUID TUBES FROM RECEIVER
Remove the 2 bolts and both tubes.
Torque: 5.4 N·m (55 kgf·cm, 48 in.·lbf)
NOTICE:
Cap the open fittings immediately to keep moisture or dirt
out of the system.
HINT:
At the time of installation, lubricate 2 new O −rings with com-
pressor oil and install the tubes.
3. REMOVE RECEIVER FROM RECEIVER HOLDER
Remove the holder bolt and pull the receiver down ward.
HINT:
If receiver was replaced, add compressor oil to compressor. Add 10 cc (0.35 fl.oz.)
Compressor oil:
ND−OIL 8 or equivalent
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