IBM Selectric Reference Manual

9.
10.
Tab Trigger Extension {Fig. 235} - Form the front
{curved} lug of the tab trigger to obtain .016
11
- .023
11
clearance between this lug and the tab torque bar with
a II parts at rest.
FIGURE 235. Tab Trigger Extension
Tab Lever
Overthrow {Fig. 236} - With the tab cam on
its high point, adjust the torque bar actuating link for
.005
11
- .0lOll overthro.w between the tab latch and tab
lever.
NOTE: The carrier should be tapped I ightly to the
left before checking this adjustment. It should also be
checked with the carrier in the center of its travel. Be
sure that the overthrow stud {Fig. 237} does not inter-
fere with this adjustment.
. 005 II to .01 0 II
,---~ Tab Torque Bar
15 Inch Machine .
Intermediate Lever
FIGURE 236. Tab Latch Adjustment
11. Tab Lever Overthrow Stop and Retaining Plate (Fig.
237) - Replace the tab torque bar overthrow stop and
retaining plate and position it so that the overthrow lug
2-78
falls directly in line with the upper lug on the tab trig-
ger and retaining plate when positioned against the
torque bar maintains .00111 - .00211 clearance between
the torque bar and escapement bracket. The outer lug
or overthrow stop should then be formed for .005
11
-
.010
11
clearance between the tab lever trigger and the
overthrow lug with the tab cam on its high point.
Overthrow
Stop
Raised Area On
Escapement Brackel
FIGURE
237. Tab Lever Overthrow Stop & Retaining Plate
12.
1.
Torque Bar Overthrow Stud {Fig. 238} - With the tab
cam on its high point, form the upright lug on the LH
end of the torque bar for a clearance of .00111 - .0lOll
between this lug and the overthrow stud •
Interlock Switch
Trigger
. 001 II to . 0 lO"
Upright Lug
FIGURE 238. Torque Bar Overthrow Stud
TABULATOR MECHANISM (EARLY)
Tab
Lever Stop - Form the stop on the escapement
bracket (Fig. 239) to obtain .00111 to .003
11
clearance
between the vertical lug on the tab lever and the back-
space pawl when the tab lever is at rest and the back-
space pawl is fully seated in its rack.
Escapement Bracket
G--1:~~'
I ~~
"""'(;;~~~
~
.. '.'~-~{:',
\
Form This Lug
}.OOl'l
FIGURE 239.
Tab Lever Stop
",
to
.003"

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