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GROUP 1 HYDRAULIC CIRCUIT
SECTION 3 HYDRAULIC SYSTEM
R1
A1
A2
A4
A3
S1
1
14
S1
BOOM
SWING
Pb5
4
4
1
3
LH
BUCKET
ARM
A2
1
2
9
4
4
3
2
Pa5
Pb10
Pa10
T
A1
A2
RH
IN
OUT
UP
DOWN
OUT
IN
P
Pa3
Pb2
Pb3
Pa2
3
5
6
8
10
11
12
13
16
15
17
18
19
21
20
20
20
Pa8
Pb8
7
Pa10
Dr2
Pb8'
P2
P1
Pa6
Pa7
Pa4
Pa5
Dr1
Pa3
Pa1
Pa2
Pb10
Pb8
T2
Pb6
Pb7
Pb4
Pb5
T1
Pb3
Pp1
Pb1
Pb2
2
4
3
1
L/H
R/H
Pb6
Pa6
Pb7
Pa7
TRAVEL
23
DOZER
DOWN
1
2
UP
24
Pb1
Pa1
LH
1
2
RH
B/SWING
22
1
2
Pa4
Pb4
2WAY OPTION
25
ACC
P3
A6
B6
A3
B3
A4
B4
A2
B2
B1
A1
B5
A5
B10
A10
B7
A7
A9
B8
Dr1
Pa8
BU
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
18
19
20
21
MAIN PUMP
MAIN CONTROL VALVE
TRAVEL MOTOR
SOLENOID VALVE
LINE FILTER
OIL COOLER
SUCTION STRAINER
HYD TANK
STOP VALVE
SWING MOTOR
RCV LEVER-RH
TURNING JOINT
BUCKET CYLINDER
BOOM CYLINDER
DOZER CYLINDER
ARM CYLINDER
BOOM SWING CYLINDER
RETURN FILTER
RETURN CHECK VALVE
RCV LEVER-LH
16
17
22
23
RCV PEDAL
24
RCV DOZER
ACCUMULATOR
RCV PEDAL
25
2 OR 3 WAY OPTION VALVE
a1
a2
Ps
T1
T2
R/G
R/H
L/H
T2
a2
a1
T1
Ps
R/G
GB
GA
"R1"
"R2"
DB
PB
P2(BW)
P1(FW)
P2(FW)
P1(BW)
B(CCW)
A(CW)
Mu
3-1
R35Z73HC01