Top Cover
and
Worm Wheel Shaft Bearing Bracket
Pull out thread nipper hinge stud
(22332),
and unscrew top cover
(22333)
as
well as worm wheel shaft
rear
bearing
bracket
(22016).
Feed Regulator Bearing Bracket
Take both set screws
(700252)
out of feed regulator bearing bracket
(21060),
loosen thumb screw
(700293),
and
move swivel clamp
(22467)
downward.
Pull
bearing bracket to the right and up, end strip feed plate carrier bar
and
feed
regulator
post.
Cylinder
Bed Parts
Unscrew needle plate and shuttle race ring. Take out shuttle, and strip
shuttle race. Cautiously drive pin out of shuttle driver shaft crank
(6568),
and
pull out shuttle driver shaft. Dismantle feed across shaft
(22020).
Arm
Parts
Strip
shuttle
drive connecting rod
(22059).
Loosen
set
screws
in needle bar
crank ond worm, slacken set screws
(700150)
in arm shaft rear bushing
(21195),
and cautiously drive out arm shaft, making sure its cranked portion
points
downward.
Worm
Wheel
Shaft
Loosen set screws im worm wheel,
and
attach
worm wheel shaft
rear
bearing bracket
(22016)
so that the worm wheel shaft
will
not be bent when
you drive out taper pin
(1848).
Now
pull
worm wheel shaft out of
machine.
2. Assembly
Examine
oil parts for wear before you assemble
them.
If necessary,
rework
or replace damaged parts.
Make
sure to
remove
burrs and dents on shafts
so as to ensure that gears, eccentrics, set collars and other parts can be
moved
on them
eosily.
All
shafts
must
be perfectly straight because bent shafts
are
likely
to cause
binding
and
noisy
running
of the
machine.
To
facilitate
subsequent adjustment, it is recommended to replace all parts in close
proximity to their previous positions.
Worm
Wheel
Shaft
Replace both the worm wheel and the worm wheel shaft. Again screw on
worm
wheel shaft rear bearing bracket
(22016)
so that the shaft
will
not be bent
when you drive home taper pin
(1848).
Arm
Ports
Replace
arm shaft
with
driving
pulley
(20658),
arm shaft rear
bushing
(21195)
and worm. Push needle bar crank onto arm shaft, and screw down. Rotate
arm
shaft
to make sure it revolves freely. Mesh worm
and
worm wheel
31
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