JLG 740AJ Parts Manual - Manual (Page 140)

6-10 3121146
SECTION 6 HYDRAULIC
S
E
C
T
I
O
N
6
H
Y
D
R
A
U
L
I
C
FIGURE 6-3.STANDARD HYDRAULIC DIAGRAM (WITH BUCHER BRAND
AUXILIARY PUMP)
15
24
25
V2
26
36
13
14
2
18
19
40
42
41
64
X
X X
AU
X
PU
MP
SUC
T
IO
N
CAS
E
PO
RT
DR
IV
E
PUMP
SUC
T
ION
C
Y
LI
NDER
PUMP
SUCT
IO
N
BR
AKE
V1
5
22 69
X
44
6
30
45
50
2
3
39
2 23
9 10 11 35
62
T
O
W
E
R LI
FT
UP
TO
W
E
R
L
IF
T
DO
WN
UPP
E
R
LI
F
T
CY
LI
ND
E
R
X X
X
X
RE
T
U
R
N
FI
L
T
E
R
IN
OUT
73
V2
V1
X
4
M4
3
M7 6
9
10 T
P
11
12
13
14
16
15
V1
V2
SL
A
V
E
CY
L
RO
T
A
T
O
R
AC
T
U
A
T
O
R
H
Y
D. O
IL
T
ANK
LI
FT
D
O
W
N
LI
FT UP
18
17
R
E
EXT
EN
D-
A-R
E
A
C
H
CYL
IN
D
ER
2
1
7
8
SWING MOT
O
R B
A
M2
2
1
V2
P1
P2
V1
V1
P1 V2
2
1
68 70
7
5
4
X 49
2 23
PO
R
T
"
P
1
" O
N
BACK
SI
DE O
F
VA
L
V
E
B
L
O
C
K
12
1
1 X
X
65
66
68 19
8 34
8
LS
38
"LS
" POR
T
62
3 61
17
21
32
21 20
28
X
29
43
2
30
51
3
2
39
37
31
30
4
T
E
L
ESCOPE O
U
T
T
E
L
E
SC
O
P
E I
N
57 59
58
60
4
27
X
X
X
18
55
17
MP
T
M3
74 10 11 35
M
a
s
ter C
y
lin
d
e
r
Po
rt
B
lo
c
k
o
n
Up
ri
gh
t L
ift
Cylin
der
OF MA
IN
V
A
L
V
E
OPPO
S
IT
E
SID
E
V1 T V2
M
MT
REL
IEF
VA
L
V
E
LO
CA
T
E
D
IN
U
P
R
IGH
T
“IM
P
OR
T
A
NT
"
PO
RT
L
O
CA
TED
O
N
TH
E
I
N
SI
DE
OF
T
H
E
F
IL
T
ER
N
EXT
T
O
T
H
E
OU
T
L
ET
P
O
R
T
.
P
L
U
G
T
O
W
E
R TE
LE
52
2
8
3
19
33
54
17
56
53
64
63
67
47
71
72
77
AU
X PUMP
79
76
68
X
48
78
7
75
80
9 10 11 35
9 10 11 35
9 10 11 35
USE WIT
H
HOSES COM
ING
O
U
T
OF
TH
E T
O
WER
B
OOM POWER
T
R
A
C
T
.
DO
NO
T
RU
N W
IRES T
HRO
UG
H
.
NO
T E
:
P
o rt
V
1 o
f t
h e
S lave Cyl
. is
RET
RACT
an
d
S
H
O
U L
D
h
o se to
t
h e
RO
D
en
d of
t
h e
M
ast
er Cyl
.V
2 i s
E X
T
E ND an
d
S
H
OULD
ho
se t
o t
h e
P
IS
T ON end
o
f t
h
e M
a st
er
Cy
l.
Th
is
N
O
T E
Ap
pl
ies t
o t
h e
JI
B S
L A
V
E
Cyl
. a
n
d th
e NO
N-JI
B SL
A
V E
Cyl
.
Po
rt
B
lo
c
k
o
n
Lo
w
e
r Li
ft
Cyl
in
der