Lull 6K Service Manual - Manual (Page 92)

Reference Diagrams
4-5 Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
X
X
BOOM TELESCOPE CYLINDER
ACCUMULATOR
BOOM ROLL BACK HOSES
VALVE
@ 3150 PSI
@ 2500 RPM
18 GPM
@ 2650 PSI
ORBITRO
18 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
VA
VALVE
SELECTOR
P1
B1
P2
B3
A1
A3
.020
.020
VENT
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 PSI
ACG
EF
PUMP 1 PUMP 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
L O
T
ACC
U
M
U
LA
TOR
P1 B1
PRESSURE
FILTER
OPEN BELOW 250 PSI
CLOSED ABOVE 250 PSI
275
0 PSI
317
5 PSI
SE
E SER
VI
CE MANUAL
SE
E SER
VI
CE MANUAL
330
PSI
237
5 PSI
460
PSI
400
PSI
P
R
E-
CHA
RGE
107
5 PSI
L
O
W
LI
MI
T
195
0 PSI
HI
G
H
LI
MI
T
AC
SW
FRAME TILT CYLINDER
3500 PSI
C.B. VALVES
460
PSI
G1 GAGE
PD1
T1
PSI
250
OR1
.043
ACC
SV1
PS1
.043
OR2
SW FB BR
170
PSI
PD2
PSI
110
B
SH
PORT
A
G3
GAGE
RB PIL
REAR AXLE STABILIZER
G2 GAGE
SERVICE BRAKE PRESSURE SWITCH
T2
CONTROL VALVE PORT
PORT
60 PSI
.040
OR3
PSI
160 PSI
2450
1 2
Schematic, Model 644B w/Naturally Aspirated Engine, Mid-Inlet Hydraulic System - Diagram 2