Cub Cadet 8404 - Manual (Page 119)

TRANSMISSION
4-15 D615-W02 May-2003
615W423A
615W422A
B. With PTO Clutch OFF
a. If PTO conversion switch is set to [OFF], the PTO
clutch valve will operate to close the path of “A” port
by solenoid valve.
b. The piston will be retracted by spring reaction force
in the direction of arrow and the clutch disc will not
be locked tightly. Consequently, Power transmis-
sion will be stopped toward the PTO shaft.
(1) Piston (4) Clutch Disc
(2) Spring (5) Pressure Plate
(3) Clutch Plate (6) PTO Shaft
4.3 OIL FLOW
A. With PTO Clutch ON
a. If PTO conversion switch is set to [ON], the PTO
clutch valve will be operated to flow oil from the hy-
draulic pump to PTO clutch “A” port.
b. This oil flows to the piston, where it pushes the
piston in the direction of arrow with spring compres-
sion.
c. Tighten clutch plate and clutch disc with pressure
plate to drive PTO shaft by friction force.
d. The pressure in the PTO clutch circuit is slowly in-
creased to the reducing valve control pressure (be-
tween 19 and 21 kgf/cm
2 ) by the modulator valve.
(1) Piston (4) Clutch Disc
(2) Spring (5) Pressure Plate
(3) Clutch Plate (6) PTO Shaft