- 40-
(B-138)
When the bell
crank
assembly is finally
adjusted,
all
five code
bars
should
rest firmly against the
marking and
spacing stops
when
the
vanes
are
in
their respective marking
and
spacing positions. Make sure that the
upper ends
of
the bell
c
r
an
k
s
do
not engage the
code
bars
d
ee
p
ly e
noug
h
t
o
b
i
nd.
SPACING RACK
ADJUSTMENT
(Figure 63)
There should be some
bac
kl
as
h, not
mre
than
.006•,
between the spac
ing gear and
the spacing rack along the entire t
r
a
vel of the rack.
To
adjust,
loosen
the
spacing rack mounting screws
and
adjust
the
rack toward the front or
rear.
LOCKING FUNCTION
LEVER
SPRING TmSION
(Figure
26)
Rotate
the
main
shaft until the printing bail is in its
extreme
rear
position.
Unhook the
locking function lever spring
tram
the spring plate and
hold
the
locking function
l
e
ver
against
its piwting sha.tt.
With
a
64
oz. scale
hooked in
the
locking
function lever epring eye, it
should .require
40
to
50
ozs.
to pull the spring
to
position length.
SIXTH
VANE DETENT
SPRING TENSION
(Figure
24)
Hook
an
8
oz. scale in the sixth
vane
detent spring hole
and
pull
in
line with the spring toward the rear
ot
the t1J)ing unit. It should require
6
to
8
ozs.
to
start the roller moving a-. from the sixth
vane.
CARRIAGE RETURN
SPRING
DRUM
ADJUSTNENT
Rotate the
main
shaft untU the printing
b&U
18
in 1 ta
extre111.1 rear
position. Hook a
12
lb. scale over the lower part ot tbl
ri&ht ribbon
spool
·
bracket
and
pull in a
line
parallel
to the carri&&e track. It lhould require
3-3/4 to 4-l/4 lbe.
to
start the carriqe
moving &'lfll'
from the
extZ'eiDI
lett
position. When .measuring this tension, the carriage retum lock
bar
should
be
held in approximatel.7 its latched position
eo
as
to
disengqe the clutch teeth,
and
the dashpot lever should be held in its operated position.
To
adjust,
wind
up the carriage return spring by rotating the center shaft ot the
drum to
increase the tension,
and
operate the carr.iqe return
drum
escapement lever
to
decrease the tension.
·
PAPZR
S
P
I
NDLE
DRAG SPRING ADJUSTMI!NT
(Figure
6�)
*
Insert a paper spindle (without paper) in its bearing slots,
and
lock
it in place with the ret&ining plates. With both ends
ot
the apindle shaft at
the bottom of their slots, appl.7 the pulh
8Dd
of a
l2
lb. scale to the lett
end
ot the epindle ehatt
ar.w1
push t
owar
d the right side of the t7Pin& unit. It
should require ' to
8
lba.
to
start the spindle JDOving. 'l'his pressure
mq
be
adjusted by bel¥11ng the spindle drq spring.
*
*
*
*
Omitted when adjusting sprocket teed pr1ntere. See page
60.
..
m
-
-J
en
