FRONT LOADER
LA525, LA765, WSM
1-M9
(5) Roll-back
1. When the hydraulic control lever is set to the
"ROLL-BACK"
position, the spool (4) of the bucket control section
(2) moves to the left. This makes oil passages between passage 2 (8) and
B2
port, also between
A2
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
PB
passage 1 (3). As the oil passage from the neutral passage 2 (5) to the
PB
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
B2
port to retract the bucket cylinder (9).
3. Return oil from the bucket cylinder (9) flows to the transmission case through the
A2
port and T port.
9Y1211014FLM0009US0
(1) Boom Control Section
(2) Bucket Control Section
(3)
PB
Passage 1
(4) Spool
(5) Neutral Passage 2
(6)
PB
Passage 2
(7) Load Check Valve
(8) Passage 2
(9) Bucket Cylinder
P:
P Port
T:
T Port
PB: PB Port
A2: A2 Port
(From Bucket Cylinder)
B1: B2 Port
(To Bucket Cylinder)
(a) Low Pressure
(b) High Pressure
KiSC issued 06, 2017 A
Summary of Contents for LA525
Page 1: ...LA525 LA765 WORKSHOP MANUAL FRONT LOADER KiSC issued 06 2017 A ...
Page 4: ...I INFORMATION KiSC issued 06 2017 A ...
Page 10: ...INFORMATION LA525 LA765 WSM I 5 9Y1211014INI0001US0 KiSC issued 06 2017 A ...
Page 11: ...INFORMATION LA525 LA765 WSM I 6 9Y1211014INI0002US0 KiSC issued 06 2017 A ...
Page 20: ...G GENERAL KiSC issued 06 2017 A ...
