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IBM 01 Maintenance Manual page 465

Electric typewriters
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through one of the holes in the core. The ribbon will
unwind counter clockwise as indicated by the arrow on
top of the core. The ribbon spool must be smaller in
diameter than the rewind reel on the upper spool flange,
(4 5/8" maximum) otherwise the ribbon will slacken dur-
:ing feed action.
3. Re-install the intermediate spool flange and the upper
spool flange. The pin of the lower flange extends into
one of the three holes in the friction drum of the inter-
mediate flange, and the pin of the fixed knob in the upper
flange reaches into one of the matching holes of the inter-
mediate spool flange. Replace and tighten the spool re-
taining nut.
4. Unwind sufficient ribbon from the spool and thread it
toward the right through the deflector rolls, ribbon guides
and brakes on the auxiliary carriage, but by-pass the
stationary brake (Figure 9).
-
o
o
--
o
Id]' - ----Ploton ------,
Fi~UTe
9. Ribbon
Threadin~ Dia~Tam
5. Attach the ribbon to the rewind reel on the upper
spool flange by pressing together the two knobs until the
normally overlapping ears of the reel sectors form slots.
Thread the free ribbon end into one of these and release
the knobs. Pressing the knobs together reduces the reel
diameter and makes possible easy removal of used ribbon.
6. Make certain that the ribbon is centered in the deflector
roll grooves. Tighten by manually revolving the upper
spool flange counter-clockwise, while braking the lower
spool flange with the brake lever (projecting from below).
Shortly before the ribbon is taut, lift it between the by-
passed brake shoe and the opposite rubber pad. Hold the
magnet brake open and continue revolving the upper
9

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