SEN04308-04
00-100 6 PC18MR-3
Table of contents
100 Index
40 Troubleshooting
100 General information on troubleshooting SEN04497-00
Points to remember when troubleshooting.................................................................................................... 2
Sequence of events in troubleshooting......................................................................................................... 3
Checks before troubleshooting ..................................................................................................................... 4
Classification and procedures of troubleshooting ......................................................................................... 5
Connection table for connector pin numbers ................................................................................................ 8
T- branch box and T- branch adapter table................................................................................................... 44
200 Troubleshooting of electrical system (E-mode) SEN04498-00
Before carrying out troubleshooting for electrical system (E-mode) ............................................................. 2
Information contained in troubleshooting table ............................................................................................. 4
E-1 Engine does not start.............................................................................................................................. 5
E-2 Engine does not stop.............................................................................................................................. 12
E-3 When starting switch is turned ON, any item does not operate.............................................................. 14
E-4 When starting switch is turned ON, some items do not operate............................................................. 16
E-5 Alarm buzzer is abnormal....................................................................................................................... 17
E-6 Engine oil pressure caution is turned ON............................................................................................... 19
E-7 Charge level caution is turned ON.......................................................................................................... 20
E-8 Preheating system does not operate or preheater does not become hot............................................... 22
E-9 Coolant temperature gauge is abnormal................................................................................................ 24
E-10 Fuel level gauge is abnormal................................................................................................................ 28
E-11 Service meter does not operate while engine is running...................................................................... 32
E-12 2nd travel speed is not selected........................................................................................................... 35
E-13 Working lamp does not light up............................................................................................................ 38
E-14 When work equipment lock (PPC basic pressure lock) lever is set in LOCK,
work equipment still moves..................................................................................................................... 40
E-15 Blade/Variable gauge selector system does not operate normally....................................................... 43
300 Troubleshooting of hydraulic and mechanical system (H-mode) SEN04499-00
Information contained in troubleshooting table ............................................................................................. 3
H-1 Speed or power of whole work equipment, travel, swing, and blade is low............................................ 4
H-2 Engine speed lowers extremely or engine stalls.................................................................................... 5
H-3 Whole work equipment, travel system, swing system, and blade do not move ..................................... 6
H-4 Abnormal sound comes out from around hydraulic pump...................................................................... 7
H-5 Fine control performance or response is low ......................................................................................... 7
H-6 Speed or power of boom is low.............................................................................................................. 8
H-7 Speed or power of arm is low................................................................................................................. 9
H-8 Speed or power of bucket is low............................................................................................................. 10
H-9 Speed or power of boom swing is low.................................................................................................... 11
H-10 Work equipment does not move singly ................................................................................................ 11
H-11 Work equipment hydraulic drift is large................................................................................................. 12
H-12 Time lag of work equipment is large..................................................................................................... 13
H-13 In compound operation of work equipment, speed of part loaded more is low.................................... 13
H-14 Machine deviates during travel............................................................................................................. 14
H-15 Travel speed or travel power is low...................................................................................................... 16
H-16 Machine is not steered well or steering power is low........................................................................... 16
H-17 Travel speed does not change............................................................................................................. 17
H-18 Travel motor does not work (one side only) ......................................................................................... 17
H-19 Speed or power of swing is low............................................................................................................ 18
H-20 Machine does not swing....................................................................................................................... 20
H-21 Swing acceleration performance is low................................................................................................ 22
H-22 Machine overruns when it stops swinging............................................................................................ 23
H-23 Large shock is made when machine stops swinging ........................................................................... 24
H-24 When upper structure stops swinging, it makes large sound............................................................... 24
H-25 Hydraulic drift of swing is large............................................................................................................. 25
H-26 Speed or power of blade is low ............................................................................................................ 26
H-27 Blade does not move............................................................................................................................ 27
H-28 Hydraulic drift of blade is large............................................................................................................. 27
H-29 Variable gauge does not move............................................................................................................. 28
Find manuals at https://best-manuals.com
