Section 4 - Reference Diagrams - JLG Lull 1044C-54 II Series Service Manual

Section 4 — Reference Diagrams
Diagram 4-1 — Mid-Inlet Hydraulic Schematic
QUICK DISCONNECTS
AUX. 1
OPTIONS
QUICK DISCONNECTS
AUX. 2
OPTIONS
FRONT CARRIAGE
TILT CYLINDER
FRONT OF MACHINE
C.B. VALVES
4000 PSI
R.H. OUTRIGGER
CYLINDER
C.B. VALVES
4000 PSI
92 PSI
DIFF.
PRESSURE
SWITCH
L.H. OUTRIGGER
CYLINDER
MV0400
31200079
ACC
92 PSI
DIFF.
PRESSURE
ACCUMULATOR
SWITCH
400 PSI
PRECHARGE
FRAME TILT
CYLINDER
(2X)
.080
ORFICES
C.B. VALVES
3500 PSI
P
A
T
BRAKE
VALVE
C.B. BOOM TELESCOPE CYLINDER
VALVE
BOOM ROLL BACK HOSES
SW EF
ARROW FILTER
CV
50 MICRON
CF
0R1
FILTER
UP
LS
SV
OR3 OR2
RV
EC
PIL
T P
1 2
PRESSURE
FILTER
#4 P1 P
P
A4
B4 A5
#1
#3
#1
T
#2 P2
HOIST/TELESCOPE
FORK TILT/TRANSFER
1ST AUX.
2ND AUX.
JOYSTICK CONTROL
VIEWED FROM THE TOP
Reference Diagrams
UPPER HYDRAULICS
P
LS
T
ORBITROL STEER
VALVE
B1
P1
B3
.020
.020
A1
P2
A3
SELECTOR
VALVE
OUTRIGGER CONTROL VALVE
B7
RH LH
#4 B2
X
X
B5
#3 OUTRIGGERS
S1
T
A2
#2
A7
VALVES
PARK BRAKE PRESS. SWITCH
CLOSED BELOW 100 PSI
OPEN ABOVE 100 PSI
B
A
C PARK BRAKE VALVE
PULL TO APPLY BRAKE
PUSH TO RELEASE
BRAKE
C.B.
VALVE
B8
S3
S2
A8
4-1