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- 33 -
(B-138)
the line feed check screw
and
the bottom of
any
notch
in
the detent ratchet.
TO
adjust, loosen the check lever set screw and position the check lever.
(See
Figure
50
for location of parts.) Before tightening the set screw see that the
shaft has some end plq, not more than
• 00411•
NOTE: When checking the clearance between the chee k serew
ani
the ratchet,
the pl� or the line feed check lever shaft in its right bearing
should be taken up to make this clearance a
maximum.
LINE FEED CHECK LEVER
SPRING TENSION (Figure
50)
With the line feed pawl in the forward position, hook
an
8
oz. scale
under the head of the cheek lever set screw and pull at right angles to the set
serew. It should require
2
to
3
ozs. to start the lever moving.
PRESSURE ROLLER RELEASE SHAFT COLLARS ADJUSTMENt' (Figure
54)*
'l'he pressure roller release shaft should have some end play, not more
than
.00411•
With the right collar against the casting, there should be
5/32"
to
7
/32"
cle�ance between the boss just
to
the rear of the platen shaft bo ss
ani
the pressure roller release shaft
arm
when the
arm
is opposite the boss.
Adjust the clearance of the release shaft
arm
bT means of the right locating
collar and adjust the end play by means of the left locating collar
•
PRESSURE
ROLlER RELEASE
CAMS
ADJUSTMENT (Figure
55)*
With the pressure roller release shaft
arm
in its rear position, the
high·parts of the pressure roller·release cams should rest on the high parts ot
the release levers. To adjust, position the cams on the release shaft by means
of their set screws.
FRESSURE
ROIJ.ER TENSIOO SHUNGS ADJUSTMENT (Figure
55)*;
With the release shaft arm in its forward position, hook a
12
lb.
scale over the lower end of the spring adjusting lever, just above the spring,
and
pull in line with the spring. It should require
5
to
6
lbs. to start the
adjusting lever mving. Adjust bT means of the spring adjusting lever screw.
PRESSURE ROLLER RELEASE
LEVER
SHAFTS
ADJUSTMENT
With the inner surfaces of the two paper chute munting extensions
touching the outer bosses of the two release lever shafts, the left end of the
left release lever shaft (viewed from the rear of the printer) should project
beyond the outer surfaces of the left paper chute mounting extension
am
butt
against the platen bracket.
The outer end of the right release lever shaft
should project beyond the outer surface
of
the right paper chute extension by
not more than
3/64"
to
3/32".
T o adjust, position the release shafts
by
means
of their set screws.
(See Figure
54
for location of parts.)
*
*
*
*
Omitted when adjusting sprocket feed printers.
See page
60.
