SEN04123-01 40 Troubleshooting
32 PC130-8
E-15 Auto-decelerator does not operate normally 1
Trouble
(1) When auto-decelerator switch is operated, auto-decelerator monitor does not light up or does not
go off.
Related
information
• Condition of signal of auto-decelerator switch can be checked with monitoring function.
(Code: 04504 Monitor 1st, 2nd line switches)
Possible causes
and standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1 Defective machine monitor
Machine monitor may be defective. (Since trouble is in system,
troubleshooting cannot be carried out.)
Trouble (2) Auto-decelerator is not operated or reset with lever.
Related
information
• Set speed of auto-decelerator is 1,400 rpm. If fuel control dial is not set above this speed, auto-
decelerator is not operated or reset.
Possible causes
and standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1
Defective PPC pressure sig-
nal
a Start engine and carry out troubleshooting (with monitoring
function).
Monitoring code Item Normal display
01900
Pressure switch 1
Swing
When lever is
operated: ON
When lever is in
neutral: OFF
Boom down
Boom up
Arm digging
Arm dump
01901
Pressure switch 2
Bucket digging When lever is
operated: ON
When lever is in
neutral: OFF
Bucket dump
Service
If display of monitoring is abnormal, carry out troubleshooting for
E-26 Monitoring function does not display lever control signal nor-
mally.
2 Defective machine monitor
If cause 1 is not detected, machine monitor may be defective.
(Since trouble is in system, troubleshooting cannot be carried out.)
3 Defective pump controller
If cause 1 is not detected, pump controller may be defective.
(Since trouble is in system, troubleshooting cannot be carried out.)
4 Defective engine controller
If cause 1 is not detected, engine controller may be defective.
(Since trouble is in system, troubleshooting cannot be carried out.)
To Next Page
Loading...
Need help?
General
