1998 TOYOTA LAND CRUISER Refrigeration

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.

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.

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