Cub Cadet 8454 Service Manual page 216

CHAPTER 6 8454
b. Auxiliary Control Valve
A double acting detent type auxiliary control valve is
used, and the construction is shown in the figure right.
When the auxiliary control valve operating lever is moved
to the implement cylinder actuating position, the spool
is moved and the oil from the pump port flows into A to
B, causing the implement cylinder to operate.
The return oil from the implement cylinder flows out of
the tank port through A of B and returns to the transmis-
sion case.
This type is equipped with a special non-return valve
which ensures that oil under pressure is held where
required. This guarantees that implements will be held
at a steady height which no change of lowering.
• Circuit diagram
c. Quick Couplers
Quick couplers provided with these tractors are con-
nectable even under pressure with both halves or ei-
ther half pressurize. To connect the male half (1) to the
body (2), slide the sleeve (5) to the rear on the body half
and insert the male half into the body half.
Move the sleeve (5) forward to send the steel balls (4)
for locking the male half (1) into the body (2). The male
half (1) is locked in place by a ring of steel balls (4)
which is held in a groove on the inserted male half by
the outer sleeve (5).
6-22
K&T Saw Shop 606-678-9623 or 606-561-4983
www.mymowerparts.com
(1) Body
(2) Nut
(3) Screw
(4) Cover
(5) Nut
(6) O-Ring
(7) O-Ring
(8) Screw
(9) Washer
(10) Screw
(11) Cover
(12) Seal Cover
(13) Valve Seat
(14) Spring
569W6C1B
(15) Valve
(16) Valve Seat
(1) Male half
(2) Body
(3) Pocket
569W620B
(17) Elastic Pin
(18) Plug
(19) O-Ring
(20) Spring
(21) Ball
(22) Ball
(23) Articulation
(24) Pin
(25) Seal Ring
(26) O-Ring
(27) Pilot Spool
(28) Washer
(29) Spring
(30) Screw
(31) Spacer
569W621A
(4) Steel Ball
(5) Sleeve
D569-W03 June-2003