Komatsu PC20R-8 Shop Manual page 111

Hydraulic excavator
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ELECTRICAL DIAGRAM (2/3)
1
2
3
A2.5
1.19
A2.5
1.19
FU10
7.5 A
1
X4
2
X13
X14
Y4
V3
X13
X14
3
31
1.19
COMPONENTS:
H10 WORKING BEAM
HA2 HORN
K2
STOP MOTOR RELAY
K3
HORN RELAY
M2
FUEL PUMP
S5
OPTIONAL SWITCH (TBG)
S6
LIGHT SWITCH
S7
PUSH-BUTTON
S8
HAMMER SOLENOID VALVE
PUSH-BUTTON
S9
N.A. PUSH-BUTTON
S10 PRESSOSTAT
PC20R-8 PC27R-8
4
5
6
7
8
FU1
FU6
30 A
10 A
R - N1
2
X5
S7
K3
X6
7
X4
K2
X6
6
X4
X16 X16 X16
4
3
2
1
2
X17
X19
KT2
1
X16
S9
1
X13
M2
M
HA2
X17
CONNECTORS:
V3
STOP MOTOR DIODE
X4
9-WAYS CONNECTOR MARK
V4
WARNING LIGHT DIODE
X5
13-WAYS CONNECTOR MARK
V5
HAMMER SOLENOID VALVE DIODE
X6
16-WAYS CONNECTOR FKI INSTRUMENT
XP
ELECTRICAL SOCKET
X7
5-WAYS CONNECTOR MARK
Y3
HAMMER SOLENOID VALVE
X13 3-WAYS CONNECTOR
Y4
STOP MOTOR
X14 2-WAYS CONNECTOR
X16 4-WAYS CONNECTOR
X17 2-WAYS CONNECTOR
X19 5-WAYS CONNECTOR MARK
X20 2-WAYS CONNECTOR DEUTSCH
X21 2-WAYS CONNECTOR DEUTSCH
X23 3-WAYS CONNECTOR DEUTSCH
9
10
11
12
13
XS5
XS5
XS6 XS6
XS6
2
1
2
1
1
1
3
0
0
2
S5
A
E
S6
XS5
XS5
XS6
XS6
6
5
6
5
G - N1.5
V4
G1
1.12
3
4
X19
X19
1
X20
S10
p
H10
X20
2
X25 2-WAYS CONNECTOR
XS5 CONNECTOR FOR SWITCH MERIT
XS6 CONNECTOR FOR SWITCH MERIT
14
15
16
17
18
R1.5
1.3
FU11
FU7
FU8
FU4
7.5A
7.5A
7.5A
10A
S8
3
1
X5
X25 X25
1
X5
2
1
A
C
B
X7
X7
X23 X23 X23
1
X21
Y3
XP
V5
X21
2
FUSES:
FU1 FUSE 30A (STOP MOTOR)
FU4 FUSE 10A (CAR RADIO)
FU6 FUSE 10A (FUEL PUMP - HORN - TBG)
FU7 FUSE 7.5 A (HAMMER SOLENOID VALVE OPTIONAL)
FU8 FUSE 7.5A (ELECTRICAL SOCKET - 30 + CABIN)
FU10 FUSE 7.5A (STOP MOTOR COIL)
FU11 FUSE 7.5A (WORKING BEAM)
19
20
A2.5
3.1
A2.5
3.1
2
B - R1.5
3.0
31
3.1
RKP06580
10-93

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