TOYOTA LAND CRUISER 1998 Factory Owners Manual
Manufacturer: TOYOTA, Model Year: 1998, Model line: LAND CRUISER, Model: TOYOTA LAND CRUISER 1998Pages: 3115, PDF Size: 54.88 MB
Page 91 of 3115
I06703
I06702
I06704
I06705
- AIR CONDITIONINGREAR COOLING UNIT
AC-35
2760 Author: Date:
2004 LAND CRUISER (RM1071U)
(c) Pull out the thermistor from the evaporator.
(d) Remove the screw and the piping clamp.
(e) Loosen the 2 nuts and remove the tube and accessory.
Torque:
Liquid line: 14 N´m (140 kgf´cm, 10 ft´lbf)
Suction line: 32 N´m (330 kgf´cm, 24 ft´lbf)
NOTICE:
Cap the open fittings immediately to keep moisture or dirt
out of the system.
HINT:
At the time of reassembly, lubricate 2 new O-rings with com-
pressor oil and install them in the tubes.
(f) Remove the evaporator.
HINT:
At the time of reassembly, if evaporator was replaced, add com-
pressor oil to the new evaporator.
Add 40 cc: (1.4 fl.oz.)
Compressor oil: ND-OIL 8 or equivalent
6. REMOVE EXPANSION VALVE
Using a hexagon wrench (5.0 mm, 0.20 in.), remove the 2 bolts
and separate the expansion valve and evaporator.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
HINT:
At the time of reassembly, lubricate 4 new O-rings with com-
pressor oil and install them in the tubes.
Page 92 of 3115
AC1KE-05
I04936
2 1
I03338
Thermometer
Ice
ThermistorOhmmeter
10 cm
(0.39 in.)
Z04352
5,000
500
0
0 4,500
4,000
3,500
3,000
2,500
2,000
1,500
1,000
51015 2025
32 41 50 59 68 77 (W)
(°C)
(°F)
I06706
1 2 AC-36
- AIR CONDITIONINGREAR COOLING UNIT
2761 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION
1. INSPECT BLOWER MOTOR OPERATION
Connect the battery positive (+) lead to terminal 1 and battery
negative (-) lead to terminal 2, then check that the motor rotates
smoothly.
If the motor rotates smoothly, check the wire harness.
Otherwise, replace the blower motor.
2. INSPECT THERMISTOR RESISTANCE
(a) Place the thermistor in cold water.
(b) Measure resistance of the thermistor as the water tem-
perature increases.
(c) Compare the readings with the chart.
If the values meet the specifications, check the wire harness.
Otherwise, replace the thermistor.
3. INSPECT MAGNETIC VALVE OPERATION
Check the air passage through the valve, with and without the
battery positive voltage applied, between terminals as shown
in the chart.
ConditionAir passage
Apply B+ between terminalsFree passage
Not apply B+ between terminalsNo passage
Otherwise replace the magnetic valve with the expansion valve.
If operation is as specified, check the wire harness.
4. INSPECT EVAPORATOR
(a) Check the evaporator fins for blockage.
If the fins are clogged, remove them with compressed air.
NOTICE:
Never use water to clean the evaporator.
(b) Check the fitting for cracks or scratches.
If necessary, repair or replace.
Page 93 of 3115
AC1KG-02
AC-38
- AIR CONDITIONINGREAR COOLING UNIT
2763 Author: Date:
2004 LAND CRUISER (RM1071U)
INSTALLATION
Installation is in the reverse of removal (See page AC-32).
Page 94 of 3115
AC1KA-04
I06684
43
W
I06685
1 2
I06686
- AIR CONDITIONINGREAR COOLING UNIT
AC-29
2754 Author: Date:
2004 LAND CRUISER (RM1071U)
REAR COOLING UNIT
ON-VEHICLE INSPECTION
1. INSPECT EXPANSION VALVE
(a) Check amount of gas during refrigeration cycle.
(b) Set on manifold gauge set.
(c) Start the engine.
(d) Operate the A/C system.
(e) Inspect the expansion valve.
(1) Run the engine at 1,500 rpm for at least 5 minutes.
(2) Check the high pressure reading is 1.37 - 1.57 MPa
(14 - 16 kgf/cm
2, 199 - 288 psi).
(3) Check the low pressure reading.
If the low pressure reading is 0 kPa (0 kgf/cm
2, 0psi), replace
the expansion valve.
2. REMOVE REAR DOOR SCUFF PLATE RH
3. REMOVE REAR FLOOR MAT SUPPORT PLATE
4. REMOVE QUARTER TRIM PANEL RH
5. INSPECT THERMISTOR RESISTANCE
(a) Disconnect the connector.
(b) Measure resistance between terminal 3 and 4.
Standard resistance: Approx. 1.5 kW at 25 °C (77 °F)
If resistance is not as specified, proceed ºINSPECTIONº on
page AC-36.
6. INSPECT MAGNETIC VALVE CONTINUITY
(a) Disconnect the connector.
(b) Check the continuity exists between terminal 1 and 2.
If resistance is not as specified, proceed ºINSPECTIONº on
page AC-36.
7. CHECK FOR LEAKAGE OF REFRIGERANT
(a) Remove the power transistor.
(b) Using a gas leak detector, check for leaks of refrigerant.
If there is a leakage, check the evaporator or tightening torque
at the joints.
Page 95 of 3115
AC1KF-02
- AIR CONDITIONINGREAR COOLING UNIT
AC-37
2762 Author: Date:
2004 LAND CRUISER (RM1071U)
REASSEMBLY
Reassembly is in the reverse of disassembly (See page AC-34).
Page 96 of 3115
AC1KC-05
I06687
I15822
I15823
AC-32
- AIR CONDITIONINGREAR COOLING UNIT
2757 Author: Date:
2004 LAND CRUISER (RM1071U)
REMOVAL
1. DISCHARGE REFRIGERANT FROM REFRIGERATION
SYSTEM
HINT:
At the time of installation, first evacuate air from refrigeration
system.
Then, charge the system with the refrigerant and inspect for
leaks of the refrigerant.
Specified amount: 1,050 ± 50 g (37.04 ± 1.76 oz.)
2. DISCONNECT LIQUID AND SUCTION TUBES
Remove the bolt and slide the plate, then disconnect both
tubes.
Torque: 10 N´m (100 kgf´cm, 7 ft´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 them to the tubes.
3. REMOVE REAR DOOR SCUFF PLATE RH
4. REMOVE REAR FLOOR MAT SUPPORT PLATE
5. REMOVE ROOF HEADLINING REAR TRIM
6. REMOVE QUARTER TRIM PANEL RH
7. REMOVE ROOF SIDE INNER UPPER GARNISH
(See page BO-97)
8. REMOVE NO. 1 COOLER AIR DUCT
(a) Remove the 3 roof headlining set clips.
(b) Remove the 5 clips and the No. 1 cooler air duct.
Page 97 of 3115
I06700
- AIR CONDITIONINGREAR COOLING UNIT
AC-33
2758 Author: Date:
2004 LAND CRUISER (RM1071U)
9. REMOVE REAR COOLING UNIT
(a) Disconnect the connectors.
(b) Remove the 3 bolts and the rear cooling unit.
Page 98 of 3115
AC3OV-01
I24791
14 (140, 10)
Liquid Tube
Discharge Tube
Discharge Tube
Suction House
10 (100, 7)
22 (225, 16)
14 (140, 10)
Suction Hose
: Specified torque
N´m (kgf´cm, ft´lbf)
32 (330, 24)
10 (100, 7)
10 (100, 7)
10 (100, 7)
10 (100, 7)
32 (330, 24)
14 (140, 10)
32 (330, 24)
14 (140, 10)
- AIR CONDITIONINGREFRIGERANT LINE
AC-21
2746 Author: Date:
2004 LAND CRUISER (RM1071U)
COMPONENTS
Page 99 of 3115
AC1HU-01
AC-20
- AIR CONDITIONINGREFRIGERANT LINE
2745 Author: Date:
2004 LAND CRUISER (RM1071U)
REFRIGERANT LINE
ON-VEHICLE INSPECTION
1. INSPECTION HOSE AND TUBE CONNECTIONS FOR LOOSENESS
2. INSPECT HOSES AND TUBES FOR LEAKAGE
Using a gas leak detector, check for leakage of refrigerant.
Page 100 of 3115
AC1HW-04
AC-22
- AIR CONDITIONINGREFRIGERANT LINE
2747 Author: Date:
2004 LAND CRUISER (RM1071U)
REPLACEMENT
1. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM
2. REPLACE FAULTY TUBE OR HOSE
NOTICE:
Cap the open fittings immediately to keep moisture or dirt out of the system.
3. TIGHTEN JOINT OF BOLT OR NUT TO SPECIFIED TORQUE
NOTICE:
Do not tighten the connections more than specified.
Part tightenedN´mkgf´cmft´lbf
Compressor x Discharge hose101007
Compressor x Suction hose101007
Condenser x Discharge tube5.45548 in.´lbf
Condenser x Liquid tube101007
Liquid line Nut1414010Liquid line Nut
Bolt101007
Discharge line Nut2222516
Suction line Nut (5/8º)3233024Suction line Nut (5/8 )
Nut (3/4º)4242531Nut (3/4 )
Bolt101007
4. EVACUATE AIR FROM REFRIGERATION SYSTEM AND CHARGE SYSTEM WITH REFRIGERANT
Specified amount: 1,050 ± 50 g (37.03 ± 1.76 oz.)
5. INSPECT FOR LEAKAGE OF REFRIGERANT
Using a gas leak detector, check for leaks of refrigerant
If there is leakage, check the tightening torque at the joints.
6. INSPECT AIR CONDITIONING OPERATION