wsm L503 Workshop Manual page 437

L3130 · L3430 · L3830 · L4630 · L5030, WSM
Down
When the spool (1) is moved in the direction of the arrow, the pressure-fed oil in the P port opens the check valve
(2) and flows to the implement cylinder via A port.
Return oil from the implement cylinder flows from the B port to the transmission case through T port.
Floating
When the spool (1) moves to extreme left, the detent ball (3) and detent sleeve (4) hold the spool (1) at the floating
position as shown in the figure. The pressure-fed oil from the hydraulic pump flows to position control valve via N port.
And, the A port and B port lead to the T port along the notched sections of the spool (1). This result in the attached
implement to follow the contour of the terrain.
8-M22
HYDRAULIC SYSTEM
(1) Spool
(2) Check Valve
A : A Port
(Implement Cylinder)
B : B Port
(Implement Cylinder)
P : Pump Port
N : Neutral Port
T : Tank Port
W1016237
(1) Spool
(2) Check Valve
(3) Detent Ball
(4) Detent Sleeve
A : A Port
(Implement Cylinder)
B : B Port
(Implement Cylinder)
P : Pump Port
N : Neutral Port
T : Tank Port
W1016319
KiSC issued 02, 2007 A