Hydraulic system, 1b 1a – Lull 944E-42 Service Manual User Manual
Page 300
Hydraulic System
8.48
Model 644E-42/944E-42
Rev. 6/04
8.7.10
Hydraulic Testing
(SN 18928 thru 20123, 0160002514 thru 0160003085, Single Joystick, 944E Only)
MU5242
1
4
6
5
7
7
3
8
9
3
FRONT STEERING
CYLINDER
ATTACHMENT TILT
CYLINDER
REAR STEERING
CYLINDER
FRONT AXLE
REAR AXLE
HYDRAULIC
RESERVOIR
PUMP
MAIN
CONTROL
VALVE
LIFT/LOWER
CYLINDER
LEFT
SLAVE
CYLINDER
EXTEND/
RETRACT
CYLINDER
RIGHT
SLAVE
CYLINDER
POWER
STEERING
UNIT
OPERATOR'S CAB
FRAME SWAY
CYLINDER
FTR
FTB
AUXILIARY
HYDRAULICS
BRAKE
VALVE
P
P
A
A
T
STABILIZER
CYLINDER
FTR V
P T
G1
ACCUMULATORS
HYDRAULIC
OIL COOLER
E
R
R
E
R
E
TRANSFER
CYLINDER
Ш .041
Ш .048
R
E
R
E
R
E
R
T
P
L
LS
ACCUMULATOR
CHARGE/SECONDARY
FUNCTION VALVE
LS
DRAIN
P1
LSG
ACR
SW
P
ACF
EF
CF
PIL
PB
PBG
PPG
SW
STEER
SELECTOR
VALVE
P
R
1
2
DRAIN
BRIDGE DRAIN
OUTLET
INLET
TANK
1b
1a
6
4
4
2
RV
PR
10
2
Shuttle
Valve
CHECK VALVE
85 PSI (5,9 bar)
RETURN FILTER
25 PSI (1,7 BAR)
BYPASS
CHECK VALVE
SINGLE
JOYSTICK
1
2
3
4
T
P
FRAME SWAY
JOYSTICK
P
T
2
1
P1 P2
TB
TA
AUX2
AUX1
EB
EA
HB
HA
CTB
CTA
P3 P4
T
P
B
A
5
SINGLE
JOYSTICK
PILOT
SELECT
VALVE
ATTACH
TILT
FRAME
EXT/RET
LFT/LWR
AU
X
TRANS
8
Auxiliary
Hydraulic Pressure
Release Valve