IBM Selectric Reference Manual

Be sure to maintain the proper radial position of
the escapement cam. It should be adjusted so that
the escapement cam follower is resting on, and at
the beginning of, the low dwell of the cam when
the fi Iter shaft is in its rest position.
b. Lockout Cam Guide - Adjust the guide up or down
so
that the spacebar interposer wi II be a 1I0wed to
move to the rear .020 II to .030 II when the i nter-
poser is unlatched (Fig. 194). The filter shaft must
be rotated unti I the lockout cam moves fu lIy to the
right to check this adjustment.
"""
FIGURE 194. Spacebar Lockout Cam Guide Adjustment
c.
CAUTION: Make certain that the spacebar in-
terposer, when released and interlocked, clears
the clutch release arm by .005
11
to .020 II.
Spacebar Interposer Guide - Adjust the interposer
guide left or right to obtain .015
11
to .025
11
clear-
ance between the interposer and the lockout cam
(Fig. 195) ._The filter shaft should be in its rest
".,-- ..............
"
\
)
\ ~....... I
.015" to .025"~ ~: /' /
............ -',
Interposer Guide
FIGURE 195. Spacebar Interposer Guide Adjustment
2-66
8.
position and the spacebar interposer released to the
rear when making this adjustment.
Spacebar Interlock Mechanism (Late Style) - Perform
the following qdjustments:
a. With the machine latched at rest adjust the space-
bar interlock cam radially on the filter shaft so that
the tip of the interlock interposer rests on the high
point of the cam (Fig. 196).
Also, posifion the interlock cam laterally on the
fi Iter shaft so that the cam is against the flutes of
the fi I ter shaft and the set screw is toward the
right hand side of the machine.
Spacebar Interlock Cam
~r=~~~~L-------------~
_--L-....
- -~
Interlock
Bracket
Adjustable
Stop
FIGURE 196. Spacebar Interlock Mechanism (Late Style)
b.
With the machine latched at rest and the spacebar
interposer released to the rear, adjust the interlock
bracket front or rear to obtain a clearance of .040
11
to .050
11
between the interlock interposer and the
adjustable stop on the spacebar interposer (Fig.
197) •
Spacebar
Interlock Cam
Interlock Interposer
Interlock
Bracket
Adjustable Stop
FIGURE 197. Interlock Bracket Adjustment
c. Position the adjustable stop on the spacebar inter-
poser forward or back so that .020
11
to .025
11
clear-
ance wi II exist between the stop and the interlock
interposer when the machine is half-cycled and the
spacebar interposer is latched at rest (Fig. 198).

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