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2. SAFETY VALVE (SAFETY LEVER)
(2)
Pb1
SWING
ARM
BUCKET
P
T
(1)
(3)
(2)
(4)
SH
A
c
B e1 D
E
PS
Pc3
d1
a
d
PS
b
e
e2
PS
Pd2
Pc2
Pd40 Pd41
Pb3
Pc40
Pc41
Pc42
When the lever of the safety solenoid valve is moved upward, oil flows into the remote control valve
through solenoid valve and line filter.
When the lever of the safety solenoid valve is moved downward, oil does not flow into the remote
control valve, because of the blocked port.
C6
D6
Pc6
TURNING
JOINT
Pd6
Puo
C5
D5
Pc5
Pd5
DR5
Po5
C4
D4
DR3
Pc41
Pc40
Pd40
V3
Pc3
DR2
Pa21
C2
D2
Pc2
Pd2
DR4
P03
C1
D1
Pc1
Pd1
P
T
TRAVEL
DR0
P0
PS
(1)
(4)
(3)
Pa1
Pd1
Pc1
BOOM
P
T
P1
Dr4
T1
(3)
(1)
(2)
(4)
Po5
F
G
H
PS
J
P03
h2
h1
(MCV)
g
h
j
f
Pa5
Pb5
Pb20 Pb21
T
P04
Pa20 Pa21
OPTION C
(DOZER)
OPTION B
ARM 1
BOOM 2
SWING
TRAVEL
RIGHT
TRAVEL
STRAIGHT
Ai
Pd0
P3
P2
P1
PG(S/Motor)
P0(MCV)
P2
P3
P4
P02(MCV)
P5
T5
T2
T3
T4
Pa4
Dr3
Dr5
Pb4
P
Pu
(MCV)
(T/Joint)
(MCV)
A4
A2
A1
A1
A3
P3
P2
P1
3-7
Pi1(Pump)
Rs
Pn2
BUCKET
ARM
REGEN
ARM 2
BOOM 1
Dr#, dr#
SAFETY
SOLENOID
VALVE
LEVER UP
P(F/CNTL
EPPR)
LEVER DOWN
Pi2(Pump)
Pn1
B5
A5
Pb5
Pa5
P04
B4
Pb4
Pa4
Pc42
Pb3
Pd41
B2
A2
Pb21
DR1
Pb20
Pa20
P02
PS
Patt
B1
A1
Pb1
Pa1
TRAVEL
LEFT
T1
130ZF3HC03
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Troubleshooting
