JLG 4017PS Service Manual - Manual (Page 142)

Hydraulic System
8-10 3706PS, 3707PS, 4014PS, 4017PS, 33.7, 37.6, 37.7
b.
A B C D E F G H
1
2
3
4
5
6
7
8
G H E F C D A B
8
7
6
5
4
3
2
1
REVERSE & DEMAND F
AN
JLG V
ARIANTS
16.8cc
4014PS/4017PS: 225 bar
19cc
8 Bar
3.45 Bar
beta(10)=1000
ENGINE: F
AN PUMP
DRIVE RA
TIO
1:1.0588
FILL
AUX 1 &
AUX QC
B4
A4
AUX QC
P1
P2
PLA
TFORM OPTION
AUX 1
A4 B4
C
A
P
D
B
G
T ANK
STEERING LS LINE (MAIN CONTROL
V AL
VE)
STEERING LS LINE (ORBIT
AL)
SUPPL
Y
(STEERING SYSTEM)
A
2.8 BAR
0.7MM
FRONT
AXLE
B
BRAKE MASTER CYLINDER WITH PILOT
P
LIMITED
T O 20 BAR
(SHT
1 C3)
2
1
3
SAHR BRAKE OPTION
REAR
AXLE
R N
SAHR P
ARK BRAKE V
AL
VE
V AL VE SHOWN WITH
THE BRAKE DISENGAGED.
BRAKE DISENGAGEMENT
PRESSURE 18-30 BAR
F
MAIN CONTROL
VA
LV
E
PILOT
PRESSURE
(LIMITED
T O 20 BAR)
(SHT
1 C3)
E
T ANK
0.2 Bar
V1
V2
C1
C2
MZ6800C