Figure 6-2. standard hydraulic diagram – JLG 740AJ Parts Manual User Manual

Page 166

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6-6

740AJ

3121652

SECTION 6 HYDRAULIC

FIGURE 6-2. STANDARD HYDRAULIC DIAGRAM

15

24

25

V2

35

26

36

13

14

2

18

19

40

42

41

64

AUX

PU

MP

SU

CT

IO

N

CAS

E

PO

R

T

DR

IV

E

PU

MP

SUC

T

IO

N

CY

L

IND

E

R

PU

MP

SUC

T

IO

N

BRA

K

E

V1

5

22

69

44

6

30

45

76

2

3

39

2 23

9

10

11

35

62

TO

W

E

R

L

IF

T

UP

TO

W

E

R

L

IF

T

DOWN

U

PPE

R

LIF

T

C

Y

L

INDE

R

X

X

X

X

RE

T

U

R

N

FI

L

T

E

R

IN

OU

T

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

OR

H

Y

D.

O

IL

T

A

NK

LI

FT D

O

WN

LI

FT U

P

18

17

R

E

E

X

T

E

ND-

A-

REA

C

H

CY

L

IND

E

R

2

1

7

8

SW

IN

G

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

P

O

R

T

"P

1" ON

BA

CK

S

ID

E

OF

V

A

L

VE B

L

O

C

K

12

1

1

65

66

68

19

75

75

34

LS

38

"

L

S"

PO

R

T

62

3

61

17

21

32

21

20

28

29

43

2

30

51

3

2

39

37

31

30

4

TELE

SC

OP

E OU

T

TELE

SC

O

P

E I

N

57

59

58

60

4

27

MP

T

M3

74

10

11

35

Ma

ster Cyl

in

d

e

r

P

o

rt

Bl

ock

on

U

p

righ

t L

ift

C

y

li

nder

O

F

MA

IN

V

A

L

V

E

O

PPO

S

ITE SI

D

E

V1

T

V2

M

MT

MX

7

REL

IEF

VA

L

V

E

LO

C

A

T

E

D

IN

UP

R

IGH

T

“I

MPO

R

T

A

NT

"

PO

RT

L

O

CA

TE

D

O

N

THE

I

N

SI

DE

O

F

TH

E FIL

T

ER NE

XT T

O

T

H

E

OU

TLET

P

O

R

T

.

PLU

G

T

O

W

E

R

TEL

E

52

2

8

3

80 81 82

33

33

8

17

56

53

64

63

67

47

47

71

72

77

AU

X P

U

M

P

79

50

19

76

7

2

75

9

10

11

35

9

10

11

35

83

10

11

35

9

10

11

35

U

SE

W

ITH HO

S

ES C

O

M

IN

G

O

U

T

O

F

T

H

E

T

O

W

E

R BO

O

M

P

O

W

E

R

T

R

A

C

T

.

DO

NO

T

R

U

N WI

RE

S

T

H

R

O

U

G

H

.

NO

T

E

:

P

o

rt

V1

of

t

h

e

S

la

v

e

C

y

l. is

RE

TRA

C

T

a

n

d S

H

OULD hos

e

t

o

t

h

e

RO

D e

n

d of the

Ma

s

te

r Cy

l.

V

2

i

s

E

X

TE

N

D

a

n

d S

H

O

U

LD ho

s

e

to

th

e

PI

ST

O

N

en

d

o

f t

h

e M

a

s

te

r C

y

l.

T

h

is

N

O

TE

A

p

plie

s

t

o

t

h

e J

IB

SLA

V

E

Cy

l.

a

n

d

t

h

e

NO

N

-J

IB

S

L

A

V

E

C

y

l.

P

o

rt

Bl

ock

on

Lower Lift C

y

lin

de

r

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