Installation Instructions

B1700·B2100·B2400
WSM,11770
(3)
One-way
Clutch Cam Section
(Manual
Transmission Type)
3 TRANSMISSION
4 3
_ To
rear
PTO
shaft
(1)
ClutchCamforRear-PTO
(2) Clutch Cam
for
Mid-PTO
(3) Clutch Cam Spring
(4)
3rd
Shaft
(5)
5th
Gear
Shaft
(6) Mid-PTO
Shaft
B177F321
The
one-way
clutch
cam
is
also
called
an
overrunning
clutch.
It
is
composed
of
a
pair
of
clutch
cams (7), (8) and a cam spring (3). One
of
the
clutch
cam
is
splined
to
the
shaft
(6), and
the
other
is
spl
ined
to
the
shaft
(5).
These
two
cl
utch cams (1), (2) are engaged
with
each
other
by
the
force
of
the
cam spri ng.
As
long
as
the
shaft
(4)
is
rotating
faster
than
the
shaft
(5), (6)
these
two
clutch cams (7), (8)
will
remain
engaged,
and
the
shaft
(5), (6)
is
driven.
But,
if
the
PTO
shaft
drives a
rotary
mower
as
an
implement,
for
example, and
the
source
of
power
is
stopped by pressing
the
clutch pedal,
or
if
the
engine
speed
is
lowered,
the
cl
utch cam (7)
wi
II
overrun
as
shown in
the
figure.
This
overrunning
is
caused by
the
inertia
of
the
mower
blades. Then,
engagement
will
not
take
place
until
the
shaft
(4)
is
running
faster
than
the
shaft
(5), (6).
In
this way,
the
one-way
clutch cam protects
the
transmission
and
engine
povver
train
against
damage, by
allowi
ng
the
PTO
shaft
and
the
shaft
(5),
(6)
to
overrun
if
PTO
shaft
overspeeds.
C161F083
C161F084
(7) Slant
Cam
3-M15
(8)
Slant
Cam