Komatsu PC88MR-10 Shop Manual page 13

Engine mount ...................................................................................................................... 60-3
PTO.................................................................................................................................... 60-4
Cooling system .................................................................................................................... 60-5
Power train system ..................................................................................................................... 60-7
Swing circle ......................................................................................................................... 60-7
Swing machinery ................................................................................................................. 60-9
Sprocket............................................................................................................................ 60-11
Undercarriage and frame........................................................................................................... 60-12
Track frame ....................................................................................................................... 60-12
Idler cushion ...................................................................................................................... 60-13
Idler .................................................................................................................................. 60-14
Track roller ........................................................................................................................ 60-15
Carrier roller ...................................................................................................................... 60-16
Track shoe ........................................................................................................................ 60-17
Hydraulic system ...................................................................................................................... 60-23
Hydraulic tank.................................................................................................................... 60-23
Main pump ........................................................................................................................ 60-24
Control valve ..................................................................................................................... 60-28
Swing motor ...................................................................................................................... 60-37
Travel motor ...................................................................................................................... 60-39
PPC valve................................................................................................................................ 60-40
Work equipment and swing PPC valve................................................................................. 60-40
Travel PPC valve ............................................................................................................... 60-43
Blade PPC valve ................................................................................................................ 60-45
Boom swing PPC valve ...................................................................................................... 60-47
Solenoid valve ................................................................................................................... 60-49
Anti-drop valve for boom ..................................................................................................... 60-51
Anti-drop valve for arm ....................................................................................................... 60-53
Center swivel joint .............................................................................................................. 60-55
Cab and its attachments ............................................................................................................ 60-56
Cab mount and cab tipping stopper ..................................................................................... 60-56
Work equipment ....................................................................................................................... 60-57
Work equipment................................................................................................................. 60-57
Boom cylinder.................................................................................................................... 60-68
Arm cylinder ...................................................................................................................... 60-69
Bucket cylinder .................................................................................................................. 60-70
Boom swing cylinder .......................................................................................................... 60-71
Blade cylinder .................................................................................................................... 60-72
80 Appendix...................................................................................................................................... 80-1
Table of contents ........................................................................................................................ 80-2
Air conditioner components ......................................................................................................... 80-3
Precautions for refrigerant..................................................................................................... 80-3
Air conditioner component .................................................................................................... 80-4
Configuration and function of refrigeration cycle...................................................................... 80-7
Outline of refrigeration cycle.................................................................................................. 80-8
Air conditioner unit ............................................................................................................. 80-10
Dual pressure switch .......................................................................................................... 80-15
Air conditioner controller ..................................................................................................... 80-16
Compressor....................................................................................................................... 80-17
Condenser ........................................................................................................................ 80-18
Sunlight sensor .................................................................................................................. 80-20
Outer temperature sensor (outside air temperature sensor) ................................................... 80-21
Procedure for testing and troubleshooting ............................................................................ 80-22
Circuit diagram and arrangement of connector pins............................................................... 80-24
System diagram................................................................................................................. 80-26
Input and output signals of the air conditioner controller ......................................................... 80-27
Air conditioner unit ............................................................................................................. 80-29
Parts and connectors layout................................................................................................ 80-31
Testing air leakage (duct) .................................................................................................... 80-37
PC88MR-10
00 Index and foreword
Index
00-11