Brother International LK3-B430 Service Manual - Page 13

Clutch, Brake

Page 13 highlights

7 FEED 1. Raise the machine head. 2. Loosen screw Q. and pull out with 0 from tack length feed lever 0. 3. Tack length feed lever 0 Loosen bolt 0. remove tack length feed lever shaft 0 together with washer 0. and remove tack length feed lever 0 by moving it in the arrow direction. exercising care not to drop slide block 0. 4. Pull out pinch sleeve 0. 5. Feed cam 0 Remove bolt (t) and washer Q. 8 CLUTCH AND BRAKE I. Lower the machine head to the level position. 2. Emergency stop lever 0 Loosen screw 0 and remove emergency stop lever O. 3. Roller holder cover 0 Remove two screws 0. and then roller holder cover 0. Temporarily install emergency stop lever 0 after removing roller holder cover 0. 4. Clutch spring Disengage only the end of clutch spring 0 which is hooked to the spring hook. 5. Brake spring Disengage brake spring 0 from the spring hook. 6. Clutch cam lever 0 Loosen bolt 0. and remove clutch cam lever 0. Q, 7. Clutch actuating lever 0 Remove nut (r) and screw and then clutch actuating lever 0. 8. Tension release lever 0. Loosen screw •. and pull out tension release lever shaft m together with washer It can easily be removed if the pulley turning crank rod is at left as viewed from the rear of the machine. 0. 9. Brake assembly (D Loosen screw and remove brake assembly together with the shaft. !O. Ball presser plate Remove two bolts 0 and washers 0, and then ball presser plate m. Also remove steel ball 0, exercising care not to drop it. I I. Clutch lever assembly ( I) Remove nut (1) and eccentric screw 0. (2) Remove bolt ED, washer 12), and washer 0. 0. (3) After removing clutch lever assembly tip, remove washer 0- -0 -0 0 m - -0 0 0 O- fax 4 o- ONO 0 0 0 co 0

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7
FEED
1.
Raise
the
machine
head.
2.
Loosen
screw
Q.
and
pull
out
with
0
from
tack
length
feed
lever
0.
3.
Tack
length
feed
lever
0
Loosen
bolt
0.
remove
tack
length
feed
lever
shaft
0
together
with
washer
0.
and
remove
tack
length
feed
lever
0
by
moving
it
in
the
arrow
direction.
exercising
care
not
to
drop
slide
block
0.
4.
Pull
out
pinch
sleeve
0.
5.
Feed
cam
0
Remove
bolt
(t)
and
washer
Q.
8
CLUTCH
AND
BRAKE
I.
Lower
the
machine
head
to
the
level
position.
2.
Emergency
stop
lever
0
Loosen
screw
0
and
remove
emergency
stop
lever
O.
3.
Roller
holder
cover
0
Remove
two
screws
0.
and
then
roller
holder
cover
0.
Temporarily
install
emergency
stop
lever
0
after
removing
roller
holder
cover
0.
4.
Clutch
spring
Disengage
only
the
end
of
clutch
spring
0
which
is
hooked
to
the
spring
hook.
5.
Brake
spring
Disengage
brake
spring
0
from
the
spring
hook.
6.
Clutch
cam
lever
0
Loosen
bolt
0.
and
remove
clutch
cam
lever
0.
7.
Clutch
actuating
lever
0
Remove
nut
(r)
and
screw
Q,
and
then
clutch
actuating
lever
0.
8.
Tension
release
lever
Loosen
screw
•.
and
pull
out
tension
release
lever
shaft
m
together
with
washer
0.
It
can
easily
be
removed
if
the
pulley
turning
crank
rod
is
at
left
as
viewed
from
the
rear
of
the
machine.
9.
Brake
assembly
(D
Loosen
screw
0.
and
remove
brake
assembly
together
with
the
shaft.
!O.
Ball
presser
plate
Remove
two
bolts
0
and
washers
0,
and
then
ball
presser
plate
m.
Also
remove
steel
ball
0,
exercising
care
not
to
drop
it.
I
I.
Clutch
lever
assembly
(
I)
Remove
nut
(1)
and
eccentric
screw
0.
(2)
Remove
bolt
ED,
washer
12),
and
washer
0.
(3)
After
removing
clutch
lever
assembly
tip,
remove
washer
0.
0-
0
m
-
0
0
-0
-0
0
O
fax
o-
4
0
ONO
co
0
0
0