E-24 Service mode cannot be selected ..............................................................................
40-630
E-25 Horn does not sound ................................................................................................ 40-631
E-26 Horn does not stop sounding..................................................................................... 40-632
E-27 Backup alarm does not sound ................................................................................... 40-633
E-28 Backup alarm does not stop sounding........................................................................ 40-635
E-29 Headlamp does not light up....................................................................................... 40-636
E-30 Rear lamp does not light up....................................................................................... 40-639
E-31 No wiper operates continuously or intermittently.......................................................... 40-
641
E-32 Front wiper does not operate (Failure in both continuous and intermittent
operations)......................................................................................................... 40-644
E-33 Rear wiper does not operate (Failure in both continuous and intermittent
operations)......................................................................................................... 40-647
E-34 Left door wiper does not operate (Failure of both continuous and intermittent
operations)......................................................................................................... 40-650
E-35 Right door wiper does not operate (Failure of both continuous and intermittent
operations)......................................................................................................... 40-653
E-36 KOMTRAX system does not operate properly............................................................. 40-
656
Troubleshooting of hydraulic and mechanical system (H-mode)..................................................
40-658
Information mentioned in troubleshooting table (H mode) .................................................... 40-
658
System diagram of hydraulic and mechanical system.......................................................... 40-
659
List of Failure Mode and Cause ......................................................................................... 40-661
H-1 Machine lacks power (insufficient drawbar pull) ............................................................ 40-
664
H-2 Machine cannot travel (at 2nd or 3rd speed)................................................................. 40-
666
H-3 Machine does not start at all gear speeds..................................................................... 40-
667
H-4 Machine travels only in one direction, either forward or in reverse .................................. 40-
668
H-5 Large time lag at gear shifting or directional selection.................................................... 40-
669
H-6 Machine cannot be steered (machine does not turn left or right) ..................................... 40-
670
H-7 Steering speed or power is insufficient ......................................................................... 40-
671
H-8 Brake does not operate .............................................................................................. 40-672
H-9 Torque converter does not lock up ............................................................................... 40-
673
H-10 Power train oil overheats .......................................................................................... 40-674
H-11 Unusual noise is heard from around HSS and work equipment pump or HSS
motor................................................................................................................. 40-675
H-12 All work equipment operates slowly ........................................................................... 40-
676
H-13 All work equipment does not operate ......................................................................... 40-
677
H-14 Blade lift speed or power is low ................................................................................. 40-678
H-15 Blade tilt speed or power is low ................................................................................. 40-679
H-16 Blade angle speed or power is low............................................................................. 40-680
H-17 Ripper lift speed or power is low ................................................................................ 40-681
H-18 Hydraulic drift of lifted blade is large........................................................................... 40-682
H-19 Hydraulic drift of tilted blade is large........................................................................... 40-683
H-20 Hydraulic drift of lifted ripper is large .......................................................................... 40-
684
H-21 Fans speed is abnormal (high, low, or no rotation)....................................................... 40-
685
H-22 Unusual noise is heard from around fan ..................................................................... 40-
687
Troubleshooting of engine (S-mode)......................................................................................... 40-
688
Information contained in troubleshooting table (S mode)...................................................... 40-
688
S-1 When starting switch is turned to START position, engine is not cranked......................... 40-
689
S-2 The engine cranks but exhaust smoke does not come out ............................................. 40-
690
S-3 Fuel is being injected but engine does not start (incomplete combustion: engine cranks but
does not start) .................................................................................................... 40-691
S-4 Startability is poor....................................................................................................... 40-692
S-5 Engine does not pick up smoothly ............................................................................... 40-694
S-6 Engine stops during operation ..................................................................................... 40-696
S-7 Engine runs rough or is unstable ................................................................................. 40-698
S-8 Engine lacks power .................................................................................................... 40-699
S-9 Exhaust gas is black (KDPF gets clogged in a short time) .............................................. 40-
701
S-10 Engine oil consumption is excessive .......................................................................... 40-
703
S-11 Engine oil becomes contaminated early...................................................................... 40-
704
S-12 Fuel consumption is excessive .................................................................................. 40-705
S-13 Oil is in coolant (or coolant spurts or coolant level goes down)...................................... 40-
706
S-14 Oil pressure drops .................................................................................................... 40-707
S-15 Fuel mixes into engine oil.......................................................................................... 40-708
S-16 Water mixes into engine oil (milky) ............................................................................. 40-
709
S-17 Coolant temperature rises too high (overheating) ........................................................ 40-
710
S-18 Unusual noise is made ............................................................................................. 40-711
S-19 Vibration is excessive ............................................................................................... 40-712
S-20 Air cannot be bled from fuel circuit ............................................................................. 40-
713
S-21 Frequent active regeneration..................................................................................... 40-714
S-22 Active regeneration is long ........................................................................................ 40-715
S-23 White smoke is exhausted during active regeneration ................................................. 40-
716
50 Disassembly and
assembly ...........................................................................................................50-3
General information on disassembly and
assembly........................................................................50-4
How to read this manual .......................................................................................................50-4
Coating materials list ............................................................................................................50-6
Special tool list................................................................................................................... 50-10
Sketches of special tools .................................................................................................... 50-20
Engine and cooling system........................................................................................................
50-35
Removal and installation of supply pump assembly............................................................... 50-
35
Removal and installation of fuel injector assembly................................................................. 50-
40
Removal and installation of cylinder head assembly.............................................................. 50-
54
Removal and installation of radiator assembly ...................................................................... 50-
72
Removal and installation of aftercooler and assembly ........................................................... 50-
77
Removal and installation of hydraulic oil cooler assembly ...................................................... 50-
80
Removal and installation of power train oil cooler assembly ................................................... 50-
82
Removal and installation of cooling fan drive assembly ......................................................... 50-
84
Removal and installation of cooling fan motor assembly ........................................................ 50-
86
Removal and installation of engine assembly ....................................................................... 50-
88
Removal and installation of damper assembly ...................................................................... 50-
95
Removal and installation of engine front seal ........................................................................ 50-
98
Removal and installation of engine rear seal....................................................................... 50-
101
Removal and installation of engine hood assembly ............................................................. 50-
109
Removal and installation of fuel tank assembly ....................................................................50-
111
Removal and installation of KDPF assembly....................................................................... 50-
113
Disassembly and assembly of KDPF ................................................................................. 50-117
Removal and installation of KCCV assembly ...................................................................... 50-
125
Removal and installation of air cleaner assembly ................................................................ 50-
129
Power train............................................................................................................................. 50-
130
Removal and installation of power train unit assembly ......................................................... 50-
130
Disconnecting and connecting of power train unit assembly................................................. 50-
135
Disassembly and assembly of PTO ................................................................................... 50-140
Disassembly and assembly of torque converter .................................................................. 50-
144
Disassembly and assembly of TORQFLOW transmission.................................................... 50-
153
Disassembly and assembly of HSS ................................................................................... 50-177
Removal and installation of final drive assembly ................................................................. 50-
196
Disassembly and assembly of final drive ............................................................................ 50-
198
Undercarriage and frame......................................................................................................... 50-
211
Removal and installation of track frame assembly ............................................................... 50-
211
Removal and installation of idler assembly ......................................................................... 50-
213
Disassembly and assembly of idler .................................................................................... 50-215
Removal and installation of recoil spring assembly.............................................................. 50-
219
Disassembly and assembly of recoil spring ........................................................................ 50-
220
Removal and installation of track roller assembly ................................................................ 50-
224
Disassembly and assembly of track roller ........................................................................... 50-
225
Removal and installation of carrier roller assembly .............................................................. 50-
228
Disassembly and assembly of carrier roller......................................................................... 50-229
Separation and connection of track shoe assembly (Standard type track shoe) ..................... 50-
232
Separation and connection of track shoe assembly (PLUS type track shoe) .......................... 50-
235
Overall disassembly and assembly of track shoe (standard type track shoe) ......................... 50-
236Overall disassembly and assembly of track shoe (PLUS type track shoe) .............................
50-249
Disassembly and assembly of one link in field (standard type track shoe).............................. 50-
261
Disassembly and assembly of one link in field (PLUS type track shoe).................................. 50-
268
Removal and installation of pivot shaft assembly ................................................................ 50-
273
Removal and installation of equalizer bar assembly ............................................................ 50-
274
Disassembly and assembly of equalizer bar side bushing.................................................... 50-
276
Hydraulic system .................................................................................................................... 50-
277
Removal and installation of hydraulic tank assembly ........................................................... 50-
277
Removal and installation of control valve assembly ............................................................. 50-
280
Disassembly and assembly of control valve........................................................................ 50-284
Disassembly and assembly of blade PPC valve.................................................................. 50-
285
Disassembly and assembly of ripper PPC valve ................................................................. 50-
286
Removal and installation of HSS pump and cooling fan pump assembly ............................... 50-
287
Removal and installation of steering lubrication pump and power train pump
assembly ........................................................................................................... 50-289
Removal and installation of cooling scavenging pump assembly .......................................... 50-
291
Removal and installation of HSS motor assembly ............................................................... 50-
292
Disassembly and assembly of hydraulic cylinder................................................................. 50-
294
Work equipment ..................................................................................................................... 50-
300
Removal and installation of blade assembly (ST-TPP dozer)................................................ 50-
300
Removal and installation of blade assembly (PAT dozer) ..................................................... 50-
302
Removal and installation of ripper assembly ....................................................................... 50-
304
Cab and its attachments.......................................................................................................... 50-
307
Removal and installation of ROPS cab assembly................................................................ 50-
307
Removal and installation of operator's cab glass (adhesion glass) ........................................ 50-
313
Removal and installation of operator's sea.......................................................................... 50-318
Removal and installation of seat belt .................................................................................. 50-319
Removal and installation of air conditioner unit assembly..................................................... 50-
320
Removal and installation of air conditioner compressor assembly......................................... 50-
324
Electric system ....................................................................................................................... 50-
325
Removal and installation of machine monitor assembly ....................................................... 50-
325
Removal and installation of engine controller assembly ....................................................... 50-
326
Removal and installation of power train controller assembly................................................. 50-
327
Removal and installation of mass air flow and temperature sensor ....................................... 50-
329
Removal and installation of KOMTRAX terminal ................................................................. 50-
330
60 Maintenance
standard...................................................................................................................60-2
Engine and cooling
system..........................................................................................................60-3
Engine mount ......................................................................................................................60-3
Damper...............................................................................................................................60-4
Cooling system ....................................................................................................................60-6
Cooling fan pump.................................................................................................................60-7
Cooling fan motor............................................................................................................... 60-10
Power train............................................................................................................................... 60-
12
Power train mount .............................................................................................................. 60-12
Universal joint .................................................................................................................... 60-14
Torque converter and PTO.................................................................................................. 60-15
Transmission ..................................................................................................................... 60-18
Transmission control valve.................................................................................................. 60-22
Forward-reverse clutch ECMV and gear shift clutch ECMV.................................................... 60-
23
Lockup clutch ECMV.......................................................................................................... 60-24
Main relief valve and torque converter relief valve ................................................................. 60-
25
Transmission lubricating oil relief valve ................................................................................ 60-26
Bevel gear shaft, HSS, and brake........................................................................................ 60-27
Brake valve ....................................................................................................................... 60-32
Final drive ......................................................................................................................... 60-33
Sprocket............................................................................................................................ 60-36
Undercarriage and frame...........................................................................................................
60-40
Main frame ........................................................................................................................ 60-41
Suspension ....................................................................................................................... 60-43
