Komatsu PC128US-8, Shop Manual

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PC128US-8 00-3
00 Index and foreword
Table of contents
Center swivel joint .......................................................................................................................... 10-136
Solenoid valve ................................................................................................................................ 10-140
PPC accumulator ........................................................................................................................... 10-144
Holding valve.................................................................................................................................. 10-146
Work equipment................................................................................................................................. 10-152
Work equipment ............................................................................................................................. 10-152
Dimensions of components ............................................................................................................ 10-154
Hydraulic cylinder ........................................................................................................................... 10-158
Cab and its attachments .................................................................................................................... 10-160
Air conditioner ................................................................................................................................ 10-160
Electrical system ................................................................................................................................ 10-172
Electronic control system ............................................................................................................... 10-172
Monitor system ............................................................................................................................... 10-205
KOMTRAX system ......................................................................................................................... 10-219
Sensor ............................................................................................................................................ 10-221
20 Standard value table
Standard service value table.............................................................................................................. 20-3
Standard value table for engine related parts ................................................................................ 20-3
Standard value table for chassis related parts ............................................................................... 20-4
30 Testing and adjusting
Related information on testing and adjusting..................................................................................... 30-3
Tools for testing, adjusting, and troubleshooting............................................................................ 30-3
Sketches of special tools................................................................................................................ 30-7
Engine and cooling system ................................................................................................................ 30-8
Testing engine speed ..................................................................................................................... 30-8
Testing exhaust temperature.......................................................................................................... 30-9
Checking exhaust gas color ........................................................................................................... 30-10
Adjusting valve clearance............................................................................................................... 30-11
Testing compression pressure ....................................................................................................... 30-13
Testing blow-by pressure ............................................................................................................... 30-15
Testing engine oil pressure ............................................................................................................ 30-16
Handling fuel system parts ............................................................................................................. 30-17
Releasing residual pressure from fuel system ............................................................................... 30-17
Testing fuel pressure...................................................................................................................... 30-18
Testing fuel return rate and fuel leakage........................................................................................ 30-19
Bleeding air from fuel circuit ........................................................................................................... 30-21
Checking fuel circuit for leakage .................................................................................................... 30-23
Testing and adjusting alternator belt tension.................................................................................. 30-24
Checking and adjusting air conditioner compressor belt tension ................................................... 30-25
Power train......................................................................................................................................... 30-26
Testing swing circle bearing clearance .......................................................................................... 30-26
Undercarriage and frame ................................................................................................................... 30-27
Checking and adjusting track shoe tension.................................................................................... 30-27
Hydraulic system................................................................................................................................ 30-29
Testing and adjusting oil pressure in work equipment, swing, and travel circuits .......................... 30-29
Testing control circuit basic pressure ............................................................................................. 30-32
Testing and adjusting oil pressure in pump PC control circuit........................................................ 30-33
Testing and adjusting oil pressure in pump LS control circuit ........................................................ 30-36
Testing solenoid valve output pressure.......................................................................................... 30-40
Testing PPC valve output pressure................................................................................................ 30-41
Adjusting play of work equipment and swing PPC valves.............................................................. 30-43
Checking parts which cause hydraulic drift of work equipment...................................................... 30-44
Testing and adjusting travel deviation ............................................................................................ 30-46
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