Komatsu Galeo PC138US-8 Shop Manual page 678

SEN02467-00
(3) Display of hydraulic oil temperature gauge is different from actual hydraulic oil temperature.
Trouble (4) Display of hydraulic oil temperature gauge is different from display of hydraulic oil temperature
monitor.
• Signals of hydraulic oil temperature sensor are input to pump controller and then transmitted to
Related machine monitor through communication system.
information • Hydraulic oil temperature can be checked with monitoring function.
(Code: 04401 Hydraulic oil temperature)
Possible causes
and standard
value in normal
1 Defective machine monitor
state
Hydraulic oil temperature gauge and hydraulic
oil temperature monitor
24
Cause Standard value in normal state/Remarks on troubleshooting
a Turn starting switch ON or start engine and carry out trouble-
shooting.
Hydraulic oil Hydraulic oil temper-
temperature ature level
105°C
102°C
100°C
85°C
40°C
20°C
40 Troubleshooting
Color of monitor light
(a)
6
Red
5
4
3 Blue
2
1 White
PC138US, USLC-8