Singer 101 Series - Page 11

Slipping
Clutch
To
determine
whether
the
clutch
is
slipping,
remove
the motor
cover
and
press
the
knee
lever
to
full
speed
position.
If
the
armature
rotates
while
the
sewing
machine
remains
idle,
the
clutch
is slipping.
This
may
be
due
to any
one
of the
following
reasons:
1. Worn
clutch
roller
(C2,
Fig. 17).
2.
Weakened
or broken
clutch
spring
(D2,
Fig.
17).
(The
clutch
spring
should
be
strong
enough
to force
the
clutch
roller
against
the
bearing
surface
of
the
clutch
gear).
3. Clutch
roller
and
spring
clogged
with heavy
grease
or dirt.
Instructions
for
removing
the
clutch
from
the machine
are
as follows:
To Remove
the Clutch
from
the Machine
Remove
the motor
from the
machine
as
instructed
on page
12.
Loosen
the
screw (N2,
Fig. 17)
in
the stop
motion
thumb
nut
(M2, Fig.
17) at
the right
of the
balance
wheel
and
unscrew
the
D2
E2 F2
FIG. 17.
VIEW
REMOVED
THE
SHOWING
CLUTCH
ROLLER
CLUTCH
SPRING
thumb
nut
(M2).
Then
remove
the washer
(L2, Fig.
17),
the
four
washers
L3, loosen
the
two set
screws
in
the hub
of
the balance
wheel
and
remove
the
balance
wheel.
Take
out
the two
screws
(H2 and
J2,
Fig.
17) which
fasten
the
bobbin
Winder
bracket
and
belt
cover
to
the
machine,
and
slide the
bracket
off
the
arm
shaft,
being
careful
not
to spring
the
arm shaft.
Withdraw
the bushing
(G2,
Fig.
17
)
19
To
Remove
the
Clutch
from
the
upon
which
the
gear
clutch
is
mounted,
then
loosen
the
two
set
screws
in
the
collar
(F2,
Fig.
17,
page
18)
and
slide
the
collar
and
washer
(E2,
Fig.
17)
away
from
the
gear
clutch.
Remove
the
roller
(C2,
Fig.
17)
and
spring
(D2,
Fig.
17)
and
thoroughly
clean
the
spring
and
roller
bearing
in the
gear
clutch.
To
Replace
the
Clutch
in
the
Machine
Replace
the
spring
and
roller
in
the
bearing
in
the
gear
clutch,
being
careful
to
see
that
the
spring
bears
evenly
against
the
roller.
Place
the
washer
(E2,
Fig.
17)
as
closely
as
possible
to
the
gear
clutch
without
causing
the
gear
to
bind,
then
fasten
the
collar
against
the
washer
(E2)
by
means
of
the
two
set
screws.
Replace
the
bushing
(G2,
Fig.
17)
on
the
arm
shaft.
Then
replace
the
bobbin
winder
bracket
and
belt
cover
and
firmly
fasten
it
by
means
of
the
two
screws
(H2
and
J
2, Fig.
17).
Replace
the
balance
wheel
and
before
tightening
it,
slip
washers
(L3,
Fig.
17)
over
the
end
of
the
arm
shaft
in
the
following
order:
first,
the
thick
washer
with
inside
key
in
keyway
of
arm
shaft;
second,
the
thin
washer
with
outside
key
in
keyway
of
balance
wheel;
third,
the
thin
washer
with
inside
key
in
keyway
of
arm
shaft;
fourth,
the
thick
washer
with
outside
key
in
keyway
of
balance
wheel.
Next
slipwasher
(L2,
Fig.
17)
over
the
end
of
arm
shaft
With
the
key
in
the
keyway
of
the
shaft.
Then
replace
the
stop
motion
thumb
nut
(M2,
Fig.
17
) and
screw
it
on
the
shaft
as
far
as it
will
go,
after
which
tighten
the
screw
(N2,
Fig.
in
the
stop
motion
thumb
nut.
See
that
the
screw
(N2)
does
not
bear
on
the
pro-
jection
on
the
outside
of
the
washer
(L2),
also
that
there
is
cient
clearance
between
the
projection
and
the
screw
to
release
the
balance
wheel,
or
to
lock
it
by
means
of
the
stop
motion
thumb
nut.
If
the
screw
(N2)
bears
on
the
projection,
or
there
is not
sufficient
clearance,
loosen
the
screw
(N2),
remove
the
stop
motion
thumb
nut
and
reverse
the
position
of
the
washer
(L2)
on
the
shaft,
then
replace
the
stop
motion
thumb
nut
and
firmly
tighten
the
screw
(N
2).
The
balance
wheel
should
now
be
fastened
in
position
by
means
of the
two
set
screws
in
its
hub.
See
whether
bushing
runs
free
on
shaft;
if
not,
the
two
balance
wheel
set
screws
are
too
tight.
The
balance
wheel
hub
should
be
adjusted
as
closely
as
possible
to
the
face
of
the
arm
shaft
bushing
without
binding.
dThen
replace
the
motor
in
the
machine
as
instructed
on
pages
15
an
16.
13
62
OF
PARTs
FROM
MACHINE
AND
Machine—Continued
117)
suffi-