CONTENTS
1. TROUBLESHOOTING...............................................................................................................10-S1
2. SERVICING SPECIFICATIONS................................................................................................10-S5
3. TIGHTENING TORQUES..........................................................................................................10-S6
4. PRECAUTIONS AT REPAIRING REFRIGERANT CYCLE.......................................................10-S7
[1] HANDLING OF SERVICE TOOLS ......................................................................................10-S9
(1) Manifold Gauge Set.......................................................................................................10-S9
(2) Refrigerant Charging Hose..........................................................................................10-S10
(3) Vacuum Pump Adaptor ...............................................................................................10-S11
(4) Electric Gas Leak Tester .............................................................................................10-S11
(5) Can Tap Valve.............................................................................................................10-S11
(6) T-joint...........................................................................................................................10-S12
(7) R134a Refrigerant Recovery and Recycling Machine.................................................10-S12
5. CHECKING AND CHARGING REFRIGERANT CYCLE .........................................................10-S13
[1] CHECKING WITH MANIFOLD GAUGE ............................................................................10-S13
[2] DISCHARGING, EVACUATING AND CHARGING...........................................................10-S17
(1) Discharging the System...............................................................................................10-S17
(2) Evacuating the System................................................................................................10-S18
(3) Charging the System...................................................................................................10-S19
(4) Checking Charging Refrigerant Amount......................................................................10-S21
6. CHECKING, DISASSEMBLING AND SERVICING .................................................................10-S22
[1] CHECKING AND ADJUSTING..........................................................................................10-S22
(1) Compressor .................................................................................................................10-S22
(2) Control Panel (Blower Switch, A/C Switch, Mode Control Dial and Temperature
Control Dial).................................................................................................................10-S23
(3) Blower Resistor ...........................................................................................................10-S25
(4) Blower Motor ...............................................................................................................10-S26
(5) Temperature Motor......................................................................................................10-S26
(6) Mode Motor .................................................................................................................10-S27
(7) Air Conditioner Relay and Blower Relay .....................................................................10-S27
(8) Pressure Switch...........................................................................................................10-S28
(9) Wiper Switch................................................................................................................10-S29
(10)Wiper Motor.................................................................................................................10-S30
(11)Defogger .....................................................................................................................10-S30
[2] DISASSEMBLING AND ASSEMBLING ............................................................................10-S32
(1) Separating Cabin from Tractor Body ...........................................................................10-S32
(2) Removing Compressor Assembly ...............................................................................10-S36
(3) Removing Receiver and Condenser............................................................................10-S38
(4) Removing Air Conditioner Unit ....................................................................................10-S38
(5) Removing Air Conditioner Pipes..................................................................................10-S40
(6) Removing Heater Hoses .............................................................................................10-S42
(7) Cabin Windshields.......................................................................................................10-S43
(8) Wiper Motor .................................................................................................................10-S47
[3] SERVICING.......................................................................................................................10-S48
SERVICING
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