IBM Selectric Service Manual

PAPER FEED MECHANISM
NOTE:
For pin feed platen machines use adjustments 7, 8
and
10 only.
1. Before any paper feed adjustments are attempted, the
position
of the platen MUST be correct.
2. Paper Feed Braces - (early paper feed mechanism only) -
With
the feed roll tension springs disconnected the adjust-
able braces fastened to the paper feed mounting arms should
be adjusted all the way forward without deflecting either
the feed roll actuating shaft or the carriage tie rod (Fig.
187).
.030" .
/
-- - /
'I ~)
" ~: /
....... - : ./
Feed Roll
Actuating Shaft
Carriage Tie Rod
Support
Carriage Tie Rod
FIGURE 187. Paper Feed Mechanism
3. Paper Feed Supports
a. Early Paper Feed Mechanism - With the feed roll
tension springs disconnected, the vertical supports
for
the carriage tie rod and the feed roll actuating
shaft should be adjusted to just touch the bottom of
each shaft (Fig. 187). The feed roll actuating shaft
support
should be loose when the tie rod support is
adjusted.
b. Late Paper Feed Mechanism - With the feed roll
tension springs disconnected, the center support
bracket (Fig. 188) should be positioned so that the
forward lug just touches the underside of the feed
roll shaft while the rear lug just touches the top of
the carriage tie rod. The center support bracket
should not bow the copy control shaft.
4. Feed Roll Tension - Place the feed roll tension springs
in
the hole of the front feed roll arms that will provide
-2 to2-l/2 pounds tension measured at the front feed
roll pivot points.
2-54.1

IBM Selectric Specifications

General

Type	Electric typewriter
Introduced	1961
Keyboard Layout	QWERTY
Carriage Return	Electric
Manufacturer	IBM
Printing Technology	Typeball (golf ball)
Power Source	AC Power
Power Supply	120V AC