IBM Selectric Reference Manual

FIGURE 142.6 Carrier Cable Clamp
c. Carrier Cable Deflector - Form the deflector front
or
rear to prevent the cable from getting behind the
carrier (Fig. 142.7). Check along the entire writ-
ing line to make certo'in that the deflector does not
rub
on the powerframe.
FIGURE 142.7 Carrier Cable Guide
d. Center Cable Clamp - Position the cable sheath
left or right within the center cable clamp so that
the bend in the cable will just touch the machine
sideframe (left) when the carrier is resting two
spaces from the extreme left hand margin. This
ad j ustment all ows the carri er to operate free I y
along the entire length of the writing I ine and al-
lows the velocity control cable to operate with a
minimum
of flexing.
Center Cable Clamp
' .....•• ~ R H Dust Shield
~.
FIGURE 142.8 Dust Co-V~r-And Clamp
2-48
r
1
I
I
e. Keyboard Cable Clamp - Loosen the clamp screw
(Fi g. 142.9) and move the cab I e sheath forward or
back under the clamp to satisfy the following con-
dition:
I ~I'" __ - - - -
'--- -
r-
1..., .........
I I
I !
'-- ___ J
--"\ f) ~-....
--./ ---=:. ~- __ (-"I
,,-- ....... J I
/
........
,-
,
/
Clamp
'-. ./
......... _-
FIGURE 142.9 Keyboard Cable Clamp
When a low velocity character is half-cycled, the
print cam follower roller must shift onto the low
velocity lobe of the print cam by the width of the
roller plus '.030" to .040" (Fig. 142.10). Moving
the cabl e sheath to the rear wi II produce more
motion
to the roller by reducing the amount of
lost motion felt within the oversized eyelets of
the cable.
1 ""'-'1
,.:;....l- .'-C- ~
.f.--- ."":- ~ '-:-"- --- ';';'::
~-] r '. .' . '.'
I
ll
'
l
--J 1.
h..J
r .. ',
, (:---1
- - -I .'
\, i.,~-
~--i t °':1
-1~41
i, .1 (Roller)
I'" 1
(. ··1
;',1
1 .. "- ......
\ ':".1
'--"'-", I
f:':1
I .1
[., .1
1 ;\,.
\:~ -"-'.., '.~ .~
'1
I
"I
_.-1 ;': I
r.--.(~··~J
I I
I I
1 J
j
"~:.2.~j
1
r- -- -
,
I
-- -.
I
FIGURE 142.10 Roller Shifted To Low Velocity Lobe
NOTE: This adjustment may be checked byal-
ternately cycling a low and high velocity character
after applying a light film of #17 grease to both
lobes
of the print cam. O~serve the tracking of
the roller in the grease to determine if the roller
is shifting properly. Make certain that the roller
restores fully under the high velocity lobe when
the machine is at rest.

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