CONTENTS
SERVICING
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-S8
(1) Manifold Gauge Set ..........................................................................10-S8
(2) Refrigerant Charging Hose .............................................................10-S10
(3) Vacuum Pump Adaptor...................................................................10-S11
(4) Electric Gas Leak Tester.................................................................10-S11
(5) Can Tap Valve ................................................................................10-S12
(6) T-joint ..............................................................................................10-S12
(7) R134a Refrigerant Recover 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 Refrigerant ............................................................10-S17
(2) Evacuating the System ...................................................................10-S18
(3) Charging the Refrigerant.................................................................10-S19
(4) Checking Charge Refrigerant Amount ............................................10-S21
6. CHECKING, DISASSEMBLING AND SERVICING..................................10-S22
[1] CHECKING AND ADJUSTING ...........................................................10-S22
(1) Compressor ....................................................................................10-S22
(2) Air Conditioner Unit.........................................................................10-S23
(3) Blower Switch .................................................................................10-S24
(4) Blower Motor...................................................................................10-S25
(5) Blower Resistor...............................................................................10-S25
(6) A/C Switch ......................................................................................10-S26
(7) Mode Switch ...................................................................................10-S27
(8) Temperature Control Dial................................................................10-S27
(9) Temperature Motor .........................................................................10-S28
(10)Mode Motor.....................................................................................10-S28
(11)A/C Pressure Switch.......................................................................10-S29
(12)Front Wiper Switch .........................................................................10-S30
(13)Front Wiper Motor...........................................................................10-S31
[2] DISASSEMBLING AND ASSEMBLING..............................................10-S32
(1) Separating Cabin from Tractor........................................................10-S32
(2) Removing Compressor Assembly...................................................10-S39
(3) Removing Air Conditioner Unit........................................................10-S41
(4) Removing Air Conditioner Pipes .....................................................10-S41
(5) Removing Heater Hoses.................................................................10-S43
(6) Cab Windshield...............................................................................10-S45
(7) Wiper Motor ....................................................................................10-S46
[3] SERVICING ..........................................................................................10-S47
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