Operation Manual
BX25,
RCK54(P)-23BX,
RCK60B-23BX,
LA240,
BT601,
WSM
FRONT
LOADER
• Dump 2
3TAAAAGLP023A
(1
)
P T
~:a
_:b
A2
:A2
Port
(To
Bucket Cylinder)
B2:
B2 Port
(From Bucket Cylinder)
a :
Low
Pressure
b : High Pressure
(1) Boom Control Section
(6)
P.B.
Passage 2
P:
P
Port
(From Pump)
(2) Bucket Control Section (7)
Load
Check Valve
T:
T Port
(To
Tank)
(3) P.B. Passage 1
(8) Passage 2
P.B. :P.B. Port (To 3 Hitch)
(4) Spool
(9) Bucket Cylinder
(5) Neutral Passage 2
1.
When the hydraulic control lever is set to the "DUMP
2"
position, the spool (4)
of
the bucket control section (2)
moves to the right
of
the bucket control section (2) moves further to the right from the "DUMP
1"
position, which
forms oil passages between passage 2 (8) and
A2
port, and between B2 port and T port.
2.
The pressure-fed oil from the P port flows
to
the neutral passage 2 (5) through the boom control section (1) and
P.B. passage 1 (3).
As
the oil passage from the neutral passage 2 (5) to the P.B. passage 2 (6)
is
closed by the
spool (4), this oil opens the load check valve (7) and flows through the notched section
of
the spool (4) and
62
port
to extend the bucket cylinder (9).
3.
Return oil from the bucket cylinder (9) flows to the transmission case through the
B2
port and T port.
8-M9