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Control valve........................................................................................................................ 10- 58
Functions and operation by valve ........................................................................................ 10- 70
Travel motor......................................................................................................................... 10-107
PPC valve ............................................................................................................................ 10-117
Solenoid valve ..................................................................................................................... 10-136
Attachment circuit selector valve ......................................................................................... 10-138
Return oil filter...................................................................................................................... 10-140
Center swivel joint................................................................................................................ 10-142
Accumulator......................................................................................................................... 10-143
Electrical system ..................................................................................................................... 10-144
Electrical control system ...................................................................................................... 10-144
Machine monitor system...................................................................................................... 10-174
KOMTRAX system............................................................................................................... 10-190
Sensors................................................................................................................................ 10-192
20 Standard value table
Standard value table ............................................................................................................... 20-
Standard value table for engine........................................................................................... 20-
Standard value table for machine ........................................................................................ 20-
30 Testing and adjusting
Tools for testing, adjusting and troubleshooting ..................................................................... 30-
Tools for testing, adjusting and troubleshooting .................................................................. 30-
Engine and cooling system ..................................................................................................... 30-
Testing engine speed .......................................................................................................... 30-
Testing boost pressure ........................................................................................................ 30- 11
Checking exhaust gas color................................................................................................. 30- 12
Adjusting valve clearance .................................................................................................... 30- 13
Testing compression pressure............................................................................................. 30- 15
Testing blowby pressure...................................................................................................... 30- 18
Testing engine oil pressure.................................................................................................. 30- 19
Handling fuel system parts .................................................................................................. 30- 20
Releasing remaining pressure from fuel system.................................................................. 30- 20
Testing fuel system pressure............................................................................................... 30- 21
Cylinder cut-out test mode operation................................................................................... 30- 23
No injection cranking operation ........................................................................................... 30- 23
Testing fuel delivery, return rate and leakage...................................................................... 30- 24
Bleeding air from fuel circuit ................................................................................................ 30- 28
Testing fuel circuit for leakage ............................................................................................. 30- 29
Handling of controller high-voltage circuit............................................................................ 30- 30
Testing and adjusting air conditioner compressor belt tension............................................ 30- 31
Replacement of fan belt....................................................................................................... 30- 32
Undercarriage and frame ........................................................................................................ 30- 33
Testing swing circle bearing clearance................................................................................ 30- 33
Testing and adjusting track tension ..................................................................................... 30- 34
Hydraulic system .................................................................................................................... 30- 37
Testing and adjusting hydraulic oil pressure in work equipment and travel circuits ............ 30- 37
Testing source pressure of control circuit ............................................................................ 30- 40
Testing and adjusting oil pressure in pump PC control circuit ............................................. 30- 41
Testing and adjusting oil pressure in pump LS control circuit.............................................. 30- 44
Testing solenoid valve output pressure ............................................................................... 30- 48
Testing PPC valve output pressure ..................................................................................... 30- 51
Adjusting play of work equipment and swing PPC valves ................................................... 30- 53
Checking parts which cause hydraulic drift of work equipment ........................................... 30- 54
HB205-1, HB215LC-1
(01)
3
Table of Contents
58
70
107
117
136
138
140
142
143
144
144
174
190
192
3
3
3
3
4
4
4
4
4
4
9
9
9
9
11
12
13
15
18
19
20
20
21
23
23
24
28
29
30
31
32
33
33
34
37
37
40
41
44
48
51
53
54
00-3
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