Cub Cadet 8404 - Manual (Page 249)

HYDRAULIC SYSTEM
9-15 D615-W02 May-2003
615W918A
9.2 OPERATION
Operation is Divided Into Position Control, Draft Control and Mixed Operation.
A. Position Control
By moving the drawbar pull control lever (2) toward the
backstop on the lower sector part, the roller 4 (11) slid-
ing on the lever (7) of drawbar pull cam (12) will be
moved away completely.
In that manner, the drawbar pull levers will not in any
way interfere with the operation of the position control.
The raising movement of the arms is obtained by mov-
ing the position control lever (1) upward, and the lever-
age system will act in the following way.
The arm (4) being an integral part of shaft (3) turns in a
clockwise direction and causes the roller 1 (5) to slide
on the positioning cam 1 (6), in turn causing the clock-
wise rotation of lever (7); the lever will transmit a
counter-clockwise rotation, by means of friction shock
absorber (8), to the transmission arm (9) that will bring
the distributor shaft (21) into delivery position (C), thus
causing the arms to be lifted.
(1) Position Control Lever
(2) Draft Control Lever
(3) Shaft
(4) Arm
(5) Roller 1
(6) Cam 1
(7) Lever
(8) Friction Shock Absorber
(9) Arm
(10) Pin
During the lifting movement of the arms; crank (13)
with pin (10) will rotate in a counter-clockwise direction,
and via link 3 (14) will cause the positioning cam 1 (6)
to rotate clockwise. When roller 1 (5) meets the in-
clined plane of cam 1 (6) this will allow a counter-clock-
wise rotation of the lever (7) causing the transmission
arm (9) to rotate in a clockwise direction, via the friction
shock absorber (8). Arm (9) is pushed by the spring of
the distributor shaft (21) which will pass into the neu-
tral position “N” there by stopping the movement of the
lifting arms.
During the lowering phase of the arms, all leverage
movements as described above will occur in the oppo-
site sense.
Both during lifting or lowering movements, the position
of the arms will conform to a specific position of the
control lever (1) on the sector.
(11) Roller 4
(12) C a m
(13) Crank
(14) Link 3
(21) Shaft