JLG 1850SJ Service And Maintenance Manual page 430

SECTION 5 - BASIC HYDRAULIC INFORMATION & HYDRAULIC SCHEMATICS
8
D
JIB LEVEL CYLINDERS
BORE: 5.5"
ROD: 2.5"
STROKE: 16.59"
C
T 3
T 2
B
TO GR PORT ON
MAIN CONTROL
VALVE
T 1
M P
P 1
TO PORT ON
HIGH PRESSURE
P 2
FILTER
A
8
5-178
7
V 2
V 1
M L A
L A M L B
L B
1 5 0 0 p s i
2 6 0 0 p s i
( 1 0 3 .5 B A R )
( 1 7 9 .3 B A R )
7
Figure 5-148. Hydraulic Schematic - Sheet 7 of 8
6
V 1 T
JIB TELESCOPE CYLINDER
BORE: 2.5"
ROD: 1.5"
STROKE: 84.06"
V 2 V 1
M T A M T B
T B
T A
2 8 5 0 p s i
2 8 5 0 p s i
( 1 9 6 .6 B A R )
( 1 9 6 .6 B A R )
0 . 3
G P M
J I B C O N T R O L V A L V E
6
5
JIB ROTATOR
SPRING 3300 PSI
JIB LIFT CYLINDER
BORE: 5"
ROD: 2.5"
STROKE: 25.15"
V 2
V 2
V 1
J A
M J A J B M J B
S A S B
1 2 0 0 p s i
2 8 0 0 p s i
( 8 2 .8 B A R )
( 1 9 3 .1 B A R )
2 . 0
G P M
5
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