Parts Manual Manual
6-10 3120841
SECTION 6 HYDRAULIC
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6
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FIGURE 6-4. HYDRAULIC DIAGRAM - STANDARD
UPPER LIFT CYL.
SWING MOTOR
AND BRAKE
V2
V1
V1
V2
BRAKE
C2
C2
C1
SWING
C/B VALVE
MANUAL
DESCENT
VALVE
#1
1
#2
2
#3
3
#4
IN
NORMAL POSITION OF
NEEDLE VALVES
2-SPEED FUN
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ONLY ON
4
-
W
D
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S
.
SEE 4
-
W
D
B
M
’
S
**NOTE**
**N
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*
*
#1 OPEN (COUNTERCLOCKWISE)
#2 OPEN (COUNTERCLOCKWISE)
#3 CLOSED (CLOCKWISE)
#4 OPEN (COUNTERCLOCKWISE)
PORT BLOCK
ON UPRIGHT
LIFT CYL.
PORT BLOCK
ON LOWER
LIFT CYL.
LOCATED IN
UPRIGHT
CAM VALVE LOCATED
AT END OF
LOWER BOOM
CAM VALVE
LOCATED INSIDE
TURNTABLE
LOWER
TELE RETRACT
ROTATOR
ACTUATOR
SLAVE
CYL.
AUX. PUMP
CASE PORT
GEAR PUMP
SUCTION
GEAR
PUMP
RETURN
FILTER
PORT LOCATED ON THE
INSIDE OF THE FILTER
NEXT TO THE OIL TANK.
REAR HOSE
TO INLET
OF FILTER
SUCTION
DRIVE
PUMP
FILTER
UPPER
CASE
PORT
A
B
LO
W
E
R
C
A
S
E
PO
R
T
IN
OUT
AUX. PUMP
SUCTION
PISTON PUMP
SUCTION
LEVEL BACK
LEVEL FORWARD
MASTER
CYL.
LOWER
TELE EXTEND
E
C
V
MD
R
V1
V1
T
V2
V2
OUT IN
PORT BLOCK
ON LOWER
TELE CYL.
V1
V1
P1
V2
V2
2
1
P2
P2
1
2
S
B
A
MD
EXTEND-A-REACH
CYLINDER
MAIN VALVE
ASSEMBLY
EAR RETRACT
EAR EXTEND
REAR STEER
FRONT STEER
REFER TO
DRIVE CIR.
REFER TO
DRIVE CIR.
FRONT STEER
SWING
SWING
LIFT UP
LIFT DOWN
TELE. CYLINDER
HOLDING VALVE
TELE. EXTEND
BACK SIDE
OF VALVE
TELE. RETRACT
SWIVEL
PORTS
SWIVEL
PORTS
OPPOSITE SIDE
OF MAIN VALVE
DOTTED LINES ARE EXISTING COMPONENTS
DENOTES A NON-STRAIGHT HOSE END.
PORT
#7
PORT
#5
SWIVEL PORTS
BRAKE
VALVE
1
2
MT
MP
MT
M7 M7
M3
3
REVERSE
FORWARD
PORT
#5
PORT
#6
45
44
70
73
36
17
77
18
18
46
35
46
45
46
45
46
35
56
55
45
88
74 75
72
82
62
45
64
17
65
9
71
31
30
63
111
61
113
79
87
17
56
89
17
44
43
90
42
80
16
44
110
81
56
12
56
32
108
109
68
46
17
57
46
58
96
96
58
2
7
2
6
5
2
5
3
60
95
69
600 AJ
600A
600 A
J
600A
95
33
45
2
4
2
5
2
3
2
1
2
2
2
1
6
6
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N
K
5
1
4
1
4
7
9
8
6
1
1
1
0
5
2
0
5
0
3
9
8
1
5
17
76
15
14
1
3
4
1
4
2
1
3
4
2
3
6
9
2
9
1
3
1
0
2
1
0
3
86
36
18
38
39
112
100
101
18
77
39
38
40
37
38
39
17
85
84
78
56
106
93
18
17
16
15
13
20
19
14
12
11
M
P1
P
T
9
7
10
M8
8
6
5
3
4
1
2
M4
49
28
50
31
47
38
39
40
31
47
31
47
48
47
49
42
47
54
29
28
105
69
94
34
94
68
69
56
67
75
74
98
47
107
RE
68