Lull 6K Service Manual - Manual (Page 104)

Reference Diagrams
4-17 Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
X
2
VENT
T1
BOOM TELESCOPE CYLINDER
ACCUMULATOR
BOOM ROLL BACK HOSES
VALVE
@ 3150 PSI
@ 2500 RPM
18 GPM
@ 3000 PSI
QUICK DISCONNECTS
ORBITROL STEER
26 GPM
@ 2500 RPM
VALVE
C.B.
AUX. 1
TILT CYLINDER
FRONT CARRIAGE
OPTIONS
QUICK DISCONNECTS
SWITCH
WARNING
PRESSURE
BRAKE
LOW
12V
PRECHARGE
400 PSI
CYLINDERS
STEER
FRONT
BRAKES
FRONT
BRAKE
UPPER HYDRAULICS
LOWER HYDRAULICS
VALVE
VALVE
SELECTOR
P1 B1
P2
B3
A1
A3
.020
.020
PARK BRAKE VALVE
PULL TO APPLY BRAKE
PUSH TO RELEASE BRAKE
PARK BRAKE PRESS. SWITCH
PARK BRAKE CYLINDER
CLOSED BELOW 100 PSI
OPEN ABOVE 100 PSI
2.50" BORE x 2.62" STROKE
SPRING APPLIED /
HYDRAULICALLY RELEASED BRAKE
FRONT OF MACHINE
T1
T
LS
P
A
B
C
CLOSED BELOW 850 PSI
OPEN ABOVE 850 PSI LS
CF
1075/1950
ACG
EF
PUM
P 1
PUM
P 2
S T
A B
IL
IZ
E R
"
G
1 "
S T
A B
IL
IZ
E R
"
G
2 "
BRA
KES
STE
E
RI
NG
PI
LO
T
ACC
U
M
U
LATOR
P1 B1
PRESSURE
FILTER
OPEN BELOW 250 PSI
CLOSED ABOVE 250 PSI
3050 PSI 3175 PSI
SEE
SERV
ICE M
A NUA
L
SEE
SERV
ICE M
A NUA
L
330 P
S I
2375 PSI 460 P
S I
400 P
S
I PR
E -C
H
A R
G
E
1075
PSI
LO
W
LI
M
IT
1950
PSI
H
IG
H
LI
M
IT
1
PSI
AC
SW
OPTIONS
AUX. 2
CYLINDER
R.H. OUTRIGGER
4000 PSI
C.B. VALVES
L.H. OUTRIGGER
CYLINDER
C.B. VALVES
4000 PSI
FRAME TILT CYLINDER
3500 PSI
C.B. VALVES
460
PSI
2450
PSI
G1 GAGE
PD1
PSI
250
OR1
.043
ACC
SV1
PS1
.043
OR2
SW FB BR
170
PSI
PD2
B
SH
PORT
A
G3
GAGE
RB PIL
REAR AXLE STABILIZER
G2 GAGE
LOCKOUT VALVE
BOOM EXTEND/TRANSFER
(B1)
(B2)
92 PSI
DIFF.
PRESSURE
SWITCH
SWITCH
PRESSURE
DIFF.
92 PSI
SERVICE BRAKE PRESSURE SWITCH
T2
CONTROL VALVE
PORT
PORT
60 PSI
160 PSI
OR3
.040
110
PSI
Schematic, Model 1044C-54, Mid-Inlet Hydraulic System - Diagram 5