Operation Manual

BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM
BACKHOE
• Swing (Left)
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(1) Swing Cylinder (5) Spool
P: Pump Port
A6: A6 Port
(2) Swing Control Valve
(6) Inlet Section
T: Tank Port
(To Swing Cylinder)
(3) Bridge Passage (7) OuUet Section
P,B, :Power Beyond Port B6: B6 Port
(4) Load Check Valve
(From Swing Cylinder)
a: Low Pressure
b: High Pressure
1, When the boom and swing lever is moved to the left to set to the "LEFT" position, the spool (5) of the swing control
valve (2) moves to the left, which forms oil passage between bridge (4) and
A6 port, and between 86 port and T
port.
2. The pressure-fed oil from the P port opens the load check valve (3) and flows to A6 port to shrink the swing cylinder.
3. Return oil from the swing cylinders return to the transmission case through the
86 port, low pressure passage and
T port.
9-M15