82410 • 82710 • 82910 WSM, 12271 8 HYDRAULIC SYSTEM
• Down
When the control lever
is
moved to DOWN position,
the spool
(5)
is
move to the left, and the poppet 2
(2)
is
also move to the left
by
the lever (1).
Oil
in
the hydraulic cylinder
is
forced out to the
transmission case through the
T2
port
by
the weight
of
the implement, causing the implement to lower.
Oil forced into the control valve through the P port
pushes open the unload poppet
(6)
and
returns to the
transmission case through the
T1
port.
-
-
12270F80060
(1) Lever
(2) Poppet 2
(3) Poppet 1
(4) Plunger
(5)
Spool
(6)
Unload Poppet
8-M5
P:
Pump Port
C:
Cylinder Port
11, 12, 13 :1ank Port
12270MB0060