IBM Selectric Service Manual

Bell Ringer
Bellcrank
FIGURE 182A. Line Lock Bracket
.062"
The adj ustment insures that the be II ri nger bellcrank wi II
remain in contact with the camming surface of the line
lock bracket throughout the line lock operation. It also
insures that the bellringer bellcrank will ride back over
the line lock bracket if the carrier is returned from a
position to the right of the right hand margin.
7. Bell Clapper Bellcrank Lever - The bell should ring one
space before the be liringer be Ilcrank moves onto the
front surface of the I ine lock bracket.
The adjustment is obtained by forming the lug on the bell
clapper bellcrank that acts as a stop for the bell clapper
bellcrank lever (Fig. 182B). The forming adjustment
changes the amount of bite between the bail lever and
the be II clapper be Ilcrank lever.
Form Here
Bell Clapper
Be I \crank Lever
FIGURE 182B. Bell Clapper Bellcrank Lever
8. Line Lock Bracket Adjustable Plate (Fig. 183) - Position,
with the carrier in the next to last space, to a point
where the inclined surface just begins to deflect the betl
ringer bellcrank.
8.1 Line Lock Bracket Adjustable Plate (Late Style) (Fig.
183.1) - Position, with carrier in the next to last column
to obtain .001" to .010" between the inclined surface
and the bellringer bellcrank.
2-53
Line Lock Bracket
Inclined Surface
FIGURE 183. Line Lock Bracket
FIGURE 183.1. Line Lock Bracket (Late)
Last Column
Contacts (Fig. 184) (Early)
1. Form the N/O support so that the N/O contact clears
the O/P by .020" to .030".
2. Position (carrier in next to last space) the contact actua-
tor on the bellringer bail so that it just touches the O/P.
When positioning the actuator, a II back lash must be
held out of the actuator to line lock bracket linkage.
Actuator
.020" to .030"
FIGURE 184. Last Column Contact Adjustment (Early)

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