5-42
Hydraulic Circuit Diagram (4YE engine)
Relief valve
b1
Lift lock valve
(Lift lock SOL)
Manual
downlifting valve
b2
Tilt control valve
(Tilt control SOL)
b3
ATT spool with
drain circuit
Electromagnetic proportional reducing valve
T2
T1
LS
R1
Gauge port
P
CF
S1
S2
C1
C2
C3
C4
C5
R2
Gauge port
5 OIL CONTROL VALVE
Priority valve
Load check valve
a1
Flow regulator valve
Load check valve
a2
Load check valve
a3