lock TOYOTA LAND CRUISER 1986 Factory Repair Manual

AC1HO-05
I24786
Pressure Switch Compressor and Magnetic Clutch
Ambient Temperature Sensor
CondenserNo.1 Junction Block
 HTR Relay
 RR HTR Relay
 MG CLT Relay
- AIR CONDITIONINGAIR CONDITIONING SYSTEM
AC-13
2738 Author
: Date
:
2004 LAND CRUISER (RM1071U)
LOCATION

I01387
Condition : Periodically cools and then fails to cool
I01388
Condition: Insufficient cooling
- AIR CONDITIONINGAIR CONDITIONING SYSTEM
AC-5
2730 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(2) Moisture present in refrigeration system.
Symptom seen in
refrigeration systemProbable causeDiagnosisRemedy
During operation, pressure on low
pressure side sometimes become
a vacuum and sometime normal
Moisture entered in refrigeration
system freezes at expansion valve
orifice and temporarily stops cycle,
but normal state is restored after a
time when the ice melts
Drier in over-saturated state

Moisture in refrigeration system
freezes at expansion valve orifice
and blocks circulation of refriger-
ant(1) Replace condenser
(2) Remove moisture in cycle
through repeatedly evacuating air
(3) Charge proper amount of new
refrigerant
(3) Insufficient cooling.
Symptom seen in
refrigeration systemProbable causeDiagnosisRemedy

Pressure low on both low and
high pressure sides

Bubbles seen in sight glass con-
tinuously

Insufficient cooling performance
Gas leakage at some place in re-
frigeration system
Insufficient refrigerant in system

Refrigerant leaking
(1) Check for gas leakage with gas
leak detector and repair if neces-
sary
(2) Charge proper amount of re-
frigerant
(3) If indicated pressure value is
near 0 when connected to gauge,
create the vacuum after inspecting
and repairing the location of the
leak

AC1IK-03
I068122
1
I06813
3
AC-60
- AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
2785 Author
: Date
:
2004 LAND CRUISER (RM1071U)
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 AC-3)
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 terminal 1 and 2.
Standard resistance:
570 - 1,050 W at 20°C (68 °F)
If resistance is not as specified, replace the compressor.
5. CHECK FOR LEAKAGE OF GREASE FROM CLUTCH
BEARING
6. CHECK FOR SIGNS OF OIL ON PRESSURE PLATE OR
ROTOR
7. 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.
8. 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.

AC1IQ-02
AC-68
- AIR CONDITIONINGCONDENSER
2793 Author
: Date
:
2004 LAND CRUISER (RM1071U)
CONDENSER
ON-VEHICLE INSPECTION
1. INSPECT CONDENSER FINS FOR BLOCKAGE OR DAMAGE
If the fins are clogged, wash them with water and dry with compressed air.
NOTICE:
Be careful not to damage the fins.
If the fins are bent, straighten them with a screwdriver or pliers.
2. INSPECT CONDENSER AND FITTINGS FOR LEAKAGE
Using a gas leak detector, check for leaks of refrigerant.
If there is a leakage, check the tightening torque at the joints.

AC1HQ-03
EM6656
AC-16
- AIR CONDITIONINGDRIVE BELT
2741 Author
: Date
:
2004 LAND CRUISER (RM1071U)
REMOVAL
REMOVE DRIVE BELT
Loosen the drive belt tension by turning the drive belt tensioner
counterclockwise, and remove the drive belt.

AC1LD-04
- AIR CONDITIONINGFRONT A/C EVAPORATOR
AC-77
2802 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION
1. CHECK EVAPORATOR FINS FOR BLOCKAGE
If the fins are clogged, remove them with compressed air.
NOTICE:
Never use water to clean the evaporator.
2. CHECK FITTINGS FOR CRACKS OR SCRATCHES
If necessary, repair or replace.
3. INSPECT EVAPORATOR TEMPERATURE CIRCUIT (See page DI-1322)

AC1K6-04
I07892
I03838
SST
I03839
SST
SST Push Pull
Release
Lever
I06878
CorrectWrong AC-24
- AIR CONDITIONINGFRONT COOLING UNIT
2749 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 (37.03 ± 1.76 oz.)
2. DISCONNECT LIQUID AND SUCTION TUBES
(a) Using SST, remove the 2 piping clamps.
SST 09870-00025 (Liquid tube)
09870-00015 (Suction tube)
(1) Insert SST to piping clamp.
HINT:
Confirm the direction of the piping clamp claw and SST referring
to the illustration on the caution label.
(2) Push down SST and release the clamp lock.
NOTICE:
Be careful not to deform the tubes when pushing SST.
(3) Pull SST slightly and push the release lever, then re-
move the piping clamp with SST.
(4) Remove the piping clamp from SST.
(b) Disconnect the both tubes.
NOTICE:
Cap the open fittings immediately to keep moisture or dirt
out of the system.
HINT:
At the time of installation:

Lubricate 4 new O-rings with compressor oil and install
them to the tubes.

After connection, check the fitting for claw of the piping
clamp.
3. REMOVE INSTRUMENT PANEL AND REINFORCE-
MENT (See page BO-84)

AC1KK-03
AC-42
- AIR CONDITIONINGFRONT HEATER UNIT
2767 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION
1. CHECK HEATER RADIATOR FINS FOR BLOCKAGE
If the fins are clogged, remove them with compressed air.
2. CHECK FITTING FRO CRACKS OR SCRATCHES
If necessary repair or replace.

I25040
Relay BlockJunction Block
(Built-in Relay)AC1LY-03
I25183
Engine Room J/B
63
65
57 AC-96
- AIR CONDITIONINGMAGNETIC CLUTCH RELAY
2821 Author
: Date
:
2004 LAND CRUISER (RM1071U)
MAGNETIC CLUTCH RELAY
INSPECTION
HINT:
The magnetic clutch relay is built in the engine room junction
block. Since the relay is constructed with a relay block that is in
the junction block as a unit, it is impossible to disconnect the
wire harness connecting with the relay block.
If the relay has a malfunction, replace it with the junction block
assembly wire harness together.
1. REMOVE ENGINE ROOM J/B
2. INSPECT MAGNETIC CLUTCH RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant57 - 65Continuity
Apply B+ between
terminals 57 and 65.63 - 65Continuity
If continuity is not as specified, replace the engine room J/B.
3. INSTALL ENGINE ROOM J/B

AC1HT-04
N06553
- AIR CONDITIONINGMANIFOLD GAUGE SET
AC-19
2744 Author
: Date
:
2004 LAND CRUISER (RM1071U)
SET OFF
1. CLOSE BOTH HAND VALVES OF MANIFOLD GAUGE
SET
2. DISCONNECT QUICK DISCONNECT ADAPTERS
FROM SERVICE VALVES ON REFRIGERANT LINE
HINT:
Slide the sleeve of the quick disconnect adapter upward to un-
lock the adapter and remove it from the service valve.
3. INSTALL CAPS TO SERVICE VALVES ON REFRIGER-
ANT LINE