Kubota BX24 Workshop Manual page 393

BX24, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM
 Boom (Up)
(1) Boom Cylinder
(2) Boom Control Valve
(3) Bridge Passage
(4) Load Check Valve
1. When the boom and swing lever is pulled to the backward to set to the "UP" position, the spool (5) of the boom
control valve (2) moves to the left, which forms oil passage between bridge passage (3) and B5 port, and between
A5 port and T port.
2. The pressure-fed oil from the P port opens the load check valve (4) and flows to B5 port to retract the boom
cylinder.
3. Return oil from the boom cylinder returns to the transmission case through the A5 port, low pressure passage and
T port.
(5) Spool
(6) Inlet Section
(7) Outlet Section
9-M12
P : Pump Port
T : Tank Port
P.B. :Power Beyond Port
BACKHOE
A5 : A5 Port
(From Boom Cylinder)
B5 : B5 Port
(To Boom Cylinder)
a : Low Pressure
b : High Pressure
KiSC issued 08, 2019 A