Lull 944E-42 Service Manual - Manual (Page 368)

Hydraulic System
8.116 Model 644E-42/944E-42 Rev. 6/04
8.8.31 Front-Wheel Steering Circuit (Right Turn) & Troubleshooting
(Refer to Section 8.8.60, “Steering Circuit Descriptions,” for a more detailed explanation of this circuit.)
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
OUTLET
HYDRAULIC OIL
COOLER
STEER
SELECTOR VALVE
DRAIN
R
T
P
L
LS
POWER
STEERING
UNIT
R
P
2 1
CHECK VALVE
85 PSI (5,9 bar)
RETURN
FILTER
25 PSI
(1,7 BAR)
BYPASS
CHECK
VALVE
FRONT AXLE
REAR AXLE
MU0761
Relief
Valve
Check
Valve
“P1”
Pressure
Tap
“LSG” Pressure
Tap