Komatsu Galeo PC138US-8 Shop Manual page 467

40 Troubleshooting
No. Phenomena looking like troubles
34 Hydraulic drift of work equipment is large
35 Time lag of work equipment is large
Flow rate in attachment circuit cannot be adjusted (when attachment is
36
installed)
37 Work equipment loaded more is slower during compound operation
Boom RAISE speed is low in compound operation of swing + boom
38
RAISE
Travel speed lowers largely during compound operation of work
39
equipment/swing + travel
40 Machine deviates during travel
41 Travel speed is low
42 Machine cannot be steered easily or steering power is low
43 Travel speed does not change or it is kept low or high
44 Track does not move (Only either side)
45 Travel alarm does not sound or does not stop sounding
46 Machine does not swing
47 Swing acceleration or swing speed is low
48 Excessive overrun when stopping swing
49 When upper structure stops swinging, it makes large shock
50 When upper structure stops swinging, it makes large sound
Swing holding brake does not operate normally
51
Hydraulic drift of swing is large
52 When starting switch turned ON, machine monitor displays nothing
When starting switch turned ON (before starting engine), basic check
53
item lights up
54 Precaution lights up while engine is running
55 Emergency stop item lights up while engine is running
56 Engine coolant temperature gauge does not indicate normally
57 Hydraulic oil temperature gauge does not indicate normally
58 Fuel level gauge does not indicate normally
Contents of display by machine monitor are different from applicable
59
machine
60 Machine monitor does not display some items
61 Function switch does not work
62 Alarm buzzer cannot be stopped
63 Windshield wiper and window washer do not operate
Air conditioner does not operate normally (including air conditioner
64
abnormality record)
65 While starting switch is in OFF position, service meter is not displayed
66 Machine monitor cannot be set in service mode
67 Monitoring function does not display lever control signal normally
PC138US, USLC-8
Phenomena related to compound operation
Phenomena related to travel
Phenomena related to swing
Phenomena related to machine monitor
Troubleshooting
Display
E-mode H-mode
of code
H-10
H-11
H-26
H-12
H-13
H-14
H-15
H-16
H-17
E-17 H-18
H-19
E-21
H-20
H-21
H-22
H-23
H-24
E-20 H-25
E-1
E-2
E-7
E-8
E-9
E-10
E-11
E-12
E-13
E-14
E-18
E-19
E-22
E-23
E-24
E-25
SEN02462-00
S-mode
9