IBM Selectric Reference Manual

2.
3.
Interposer
Extension
alp Stop
These Surfaces
Flush --I.~~:tJ.l1lJ::~~=
FIGURE 178. Assembly Position (Without Stop)
Bail
Eccentric (Fig. 179) - Adjust (all operational
functions restored) so that the latches clear the alp
stops by .001" to .008".
Contact Latch
.001 II to .008"
~
f
FI GURE 179. Bail Eccentric
Parallel Actuating Bails (Fig. 180) - Form the actuating
arm slot as required to provide equal latch to alP stop
clearances where a bai I actuates more than one con-
tact.
Screwdriver
.r~ _
.,/~,
:~//.
Actuating Arm
';1>
FIGURE 180. Parallel Actuating Bail
.005
11
Minimum Clearance With
Operational Cams On High Point
Contact Latch
Contact Actuating Bail
OJ
alP Stop
FI GURE 181. Check On Eccentric Ba it
NOTE: With the operational cams on their high points,
the actuating bai Is must clear the alp stops by a mini-
mum of .005" (Fig. 181).
This condition should have been satisfied by previous
adjustments and is required in order to provide ade-
quate contact rise.
OPERATIONAL CONTACT AND LATCH ASSEMBLY ADJUST-
MENTS (Late Style)
1.
2.
2-62
Operational Link (Fig. 181.1) - Adjust the links (with
the cams latched at rest) so that the contact actuators
wi II have .001" to .010" travel before bottoming.
This can be checked by pulling on the actuating arm
and observing •. 001" to .010" motion of the actuator as
shown in figure 181.1.
Pull Here And Check For .00111 to .010"
Motion Of Actuator
FIGURE 181.1 Operational Link
Contact Latches (Fig. 181.2) - Form the tails of the
interposer followers so that the latches will clear the
step on the actuator by .001" mi numum with the i nter-
posers latched.
NOTE: The bottom of the latches should not be below
the bottom of the actuator •
FIGURE
181.2 Contact Latches

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