Komatsu Galeo PC850-8 User Manual

18 PC800, 850-8
SEN00793-02 40 Troubleshooting
E-5 All work equipment, swing and travel do not move
Failure
phenomenon
• All the work equipment, swing and travel do not move.
Relative
information
Possible causes
and standard
value in normal
state
Cause Standard value in normalcy and references for troubleshooting
1 Fuse No. 3 fault
If the fuse is blown, there is a big possibility that grounding fault
occurred in the circuit. (See Cause 6.)
2
Defective lock switch
(Internal disconnection)
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
S14 (female) Lock lever Resistance
Between (1) – (2)
Free Max. 1 z
Lock Min. 1 Mz
3
PPC lock solenoid fault
(Internal disconnection,
short-circuiting, or ground-
ing fault)
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
V01 (male) Resistance
Between (2) – (1) 20 – 60 z
Between (2) – chassis ground Min. 1 Mz
4
Assembled-type diode D01
fault
(Internal short-circuiting)
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
D01 (male) Resistance (Continuitiy)
Between (4) – (8) Min. 1 Mz (No continuitiy)
5
Disconnection of wiring
harness
(Disconnection or defec-
tive contact with connector)
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
Wiring harness between FB1-3 outlet – S14
(male) (1)
Resis-
tance
Max. 1 z
Wiring harness from S14 (male) (2) – J04 – V01
(female) (2)
Resis-
tance
Max. 1 z
Wiring harness between V01 (female) (1) – J20 –
J19 – J25 – chassis ground
Resis-
tance
Max. 1 z
6
Grounding fault of wiring
harness
(Contact with grounding
(GND) circuit)
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
Between wiring harness between FB1-3 outlet –
S14 (male) (1) and chassis ground
Resis-
tance
Min. 1 Mz
Wiring harness from S14 (male) (2) – V01
(female) (2), or between wiring harness
between S14 (male) (2) – D01 (female) (4) and
chassis ground
Resis-
tance
Min. 1 Mz

Komatsu Galeo PC850-8 Specifications

General

Brand	Komatsu
Model	Galeo PC850-8
Category	Excavators
Language	English