Advertisement
PPC valve........................................................................................................................................ 60-51
ECSS valve ..................................................................................................................................... 60-54
Quadruple gear pump ..................................................................................................................... 60-55
Work equipment.................................................................................................................................. 60-57
Work equipment linkage.................................................................................................................. 60-57
Bucket ............................................................................................................................................. 60-59
Bucket positioner and boom kick-out .............................................................................................. 60-60
Work equipment cylinder................................................................................................................. 60-61
80 Appendix
Air conditioner .........................................................................................................................................80-3
Precautions for refrigerant...................................................................................................................80-3
Air conditioner component...................................................................................................................80-4
Configuration and function of refrigeration cycle .................................................................................80-6
Outline of refrigeration cycle................................................................................................................80-7
Air conditioner unit...............................................................................................................................80-9
Functions of main components in air conditioner unit ....................................................................... 80-10
Blower and intake unit ....................................................................................................................... 80-11
Compressor....................................................................................................................................... 80-12
Condenser......................................................................................................................................... 80-13
Receiver drier .................................................................................................................................... 80-14
Air conditioner control panel.............................................................................................................. 80-15
Procedure for troubleshooting ........................................................................................................... 80-16
Circuit diagram and arrangement of connector pins ......................................................................... 80-18
System diagram ................................................................................................................................ 80-20
Details of air conditioner unit ............................................................................................................. 80-22
Parts and connectors layout.............................................................................................................. 80-23
Inspection by self-diagnosis function (displays diagnosis on the control panel) ............................... 80-25
Testing temperature control system .................................................................................................. 80-26
Testing FRESH/RECIRC air changeover.......................................................................................... 80-27
Testing evaporator temperature sensor ............................................................................................ 80-29
Testing relays .................................................................................................................................... 80-30
Troubleshooting chart 1..................................................................................................................... 80-31
Troubleshooting chart 2..................................................................................................................... 80-33
Information described in troubleshooting table.................................................................................. 80-36
Troubleshooting for power supply system (Air conditioner does not operate) .................................. 80-37
Troubleshooting for compressor and refrigerant system (Air is not cooled)...................................... 80-41
Troubleshooting for blower motor system (No air comes out or air flow is abnormal) ...................... 80-44
Troubleshooting for temperature control ........................................................................................... 80-47
Troubleshooting for FRESH/RECIRC air changeover....................................................................... 80-50
Connection of service tool ................................................................................................................. 80-52
Troubleshooting by gauge pressure.................................................................................................. 80-54
Precautions for disconnecting and connecting hoses and tubes in air conditioner circuit................. 80-57
Handling of compressor oil................................................................................................................ 80-59
90 Diagrams and drawings
Hydraulic diagrams and drawings........................................................................................................... 90-3
Symbols used in hydraulic circuit diagrams ........................................................................................ 90-3
Hydraulic circuit diagram ..................................................................................................................... 90-5
Electrical diagrams and drawings ........................................................................................................... 90-7
Symbols used in electric circuit diagrams ........................................................................................... 90-7
Electrical circuit diagram ................................................................................................................ 90-11
Index ...........................................................................................................................................................
WA200-7
00 Index and foreword
Index
1
00-13
Advertisement
