JLG 1850SJ, Service And Maintenance Manual, Page: 430 / 712

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