Service Manual User guide

Hydraulic System
8.124
Model 644E-42/944E-42 Rev. 6/04
8.8.35 Crab 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
AUX
TRANS
ACCUMULATOR
CHARGE/SECONDARY
FUNCTION VALVE
LS
DRAIN P1
LSG
ACR
SW P
ACFEFCF 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
MU0801
Check
Valve
“P1”
Pressure
Ta p
Relief
Valve
“LSG” Pressure
Tap