Hydraulic system – Lull 944E-42 Service Manual User Manual
Page 342
Hydraulic System
8.90
Model 644E-42/944E-42
Rev. 6/04
8.8.18
Frame Sway (Left), Stabilizer Circuit & Troubleshooting (SN 18460 and Before)
(Refer to Section 8.8.55, “Frame Sway Circuit Description,” for a more detailed explanation of this circuit.)
CHECK
VALVE
FITTING
CHECK
VALVE
FITTING
Ш .048
Ш .041
Suction
Return
Load Sense
Pressure
Pilot Pressure
PUMP
HYDRAULIC
RESERVOIR
ATTACH
TILT
FRAME
EXT/RET
LFT/LWR
AU
X
TRANS
ACCUMULATOR
CHARGE/SECONDARY
FUNCTION VALVE
LS
DRAIN
P1
LSG
ACR
SW
P
ACF
EF
CF
PIL
PB
PBG
PPG
SW
MAIN CONTROL
VALVE
INLET
OUTLET
HYDRAULIC OIL
COOLER
FRAME SWAY
JOYSTICK
FRAME SWAY
CYLINDER
P
T
2
1
P
T
G1
STABILIZER
CYLINDER
CHECK VALVE
85 PSI (5,9 bar)
FTR
V
FTR
FTB
RETURN
FILTER
25 PSI
(1,7 BAR)
BYPASS
CHECK
VALVE
MU0621
Relief
Valve
Orifice, Part Of
Check Valve
Fittings
Orifice, Part Of
Check Valve
Fittings