Lull 944E-42 Service Manual - Manual (Page 268)

Hydraulic System
8.16 Model 644E-42/944E-42 Rev. 6/04
8.7.2 Hydraulic Testing (SN 18461 thru 18927, Dual Joystick, 644E Only)
MU5712
ATTACH
TILT
FRAME EXT/RET LFT/LWR
AU
X
TRANS
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
1 2
3
4
T
P
1 2
3
4
T
P
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
PILOT SELECT
VALVE
P1
P2
B1
B3
A1
A3
STEER
SELECTOR
VALVE
P
R
1 2
DRAIN
FRONT JOYSTICK
REAR JOYSTICK
FRAME SWAY
JOYSTICK
P
T 2 1
BRIDGE DRAIN
OUTLET
INLET
TANK
1b
1a
6
4
4
2
RV PR
10
2
Shuttle
Valve
CHECK VALVE
85 PSI (5,9 bar)
Ø .040
ORIFICE FOR
S/N 18632
& BEFORE ONLY
RETURN FILTER
25 PSI (1,7 BAR)
BYPASS
CHECK VALVE
B
A
5
8
Auxiliary
Hydraulic Pressure
Release Valve