JLG 1850SJ Service And Maintenance Manual page 424

SECTION 5 - BASIC HYDRAULIC INFORMATION & HYDRAULIC SCHEMATICS
8
D
RETURN
PLATFORM
C
T3
B
A
8
5-172
7
TELE CYL
T E L E S C O P E
BORE: 5.5 IN
ROD: 4.5 IN
STROKE 333.15
EXH RET
T2
7 M7
3 3 0 0 p s i
(227.5BAR)
A B
P T
TELE
DIRECTIONAL
1 1 5 p s i
1 5 p s i
(7.9BAR)
(1.03BAR)
MAIN
DUMP
REDUCING
3200 PSI
(220.7 BAR)
1 5 p s i
1 5 p s i
(1.03BAR)
(1.03BAR)
P2
P1
MP
B10>=1000
43 PSI(3BAR)
BYPASS
B
VARIABLE PUMP
3.1 in3(51CC)
LOAD SENSE 500PSI
PRESSURE COMP
4000PSI
S
7
Figure 5-142. Hydraulic Schematic - Sheet 1 of 8
6
EXT
V2 MD
V1
M8
M4 5 M5 5A
8 4
3 0 0 0 p s i
(206.8BAR)
LIFT
DIRECTIONAL
A
P
A U X
TELE
FLOW
CONTROL
LS
500PSI
(34.5BAR)
L1
4000PSI
(275.9BAR)
APU
L
6
5
LIFT CYL
BORE: 8.0 IN
ROD: 7.0 IN
STROKE 84.9
L I F T
2 8 5 0 p s i
(196.5BAR)
B
T 3 7 0 0 p s i
(258.5BAR)
A U X
L I F T
P I L O T
1 5 p s i
LIFT
FLOW
CONTROL
T1
RETURN FILTER IN
2800PSI
(193BAR)
5
SWIVEL
PORT #1
TANK
B6>=200
45PSI(3.1BAR)
BY PASS
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