Lull 944E-42 Service Manual - Manual (Page 352)

Hydraulic System
8.100 Model 644E-42/944E-42 Rev. 6/04
8.8.23 Attachment Tilt (Down), Slave Cylinder Circuit & Troubleshooting (Single Joystick)
(Refer to Section 8.8.57, “Attachment Tilt and Slave Circuit Description (Single Joystick),” for a more detailed
explanation of this circuit.)
ATTACH
TILT
FRAME
EXT/RET LFT/LWR
AU
X
TRANS
INLET
OUTLET
RETURN
FILTER
25 PSI
(1,7 BAR)
BYPASS
CHECK
VALVE
SINGLE
JOYSTICK
HYDRAULIC OIL
COOLER
CHECK VALVE
85 PSI (5,9 bar)
HYDRAULIC
RESERVOIR
Suction
Return
Load Sense
Pressure
Pilot Pressure
1
3
T
P
4
2
PUMP
ACCUMULATOR
CHARGE/SECONDARY
FUNCTION VALVE
LS
DRAIN P1
LSG ACR
SW P
ACF EF CF PIL PB
PBG
PPG
SW
LEFT SLAVE
CYLINDER
RIGHT SLAVE
CYLINDER
E
R
E
R
E R
ATTACHMENT TILT
CYLINDER
SINGLE
JOYSTICK
PILOT
SELECT
VALVE
P1 TB
TA
AUX2
AUX1
EB
EA
HB
HA
CTB
CTA
T P
P2 P3 P4
MAIN
CONTROL
VALVE
MU5340
Pressure
Reducing
Cartridge
Relief
Valve
Main
Relief
Valve
“PPG”
Pressure
Tap
Implement
Pump
Pressure
Tap
Unloader
Cartridge
Pilot Supply
Line