IBM Selectric - Page 35

8. Velocity Control Cable Adjustments - Thevelocityr::on-
trol cable is adjusted to satisfy the following condir~ons:
a. Carrier Cable Clamp - Loosen the clamp screw and
slide the cable sheath left or right under the clamp
until theendofthe sheath is flush to .010
11
recessed
with the right hand edge of the clamp (Fig. 85).
This adjustment prevents the yoke actuating lever
from choking off against the cable sheath.
I /'
Flush To .010"
I I
r
Clamp
I ',@ ~ !
I -- I
I,. ____ - __ - _ - - -'
. -- - - - - - - - - - - - - .,..'
FIGURE 85. Carrier Cable Clamp
b. Carrier Cable Guide - Position the cable gui de hori-
zonta and as high as possible without binding the
cable against the carrier (Fig. 86). This adjustment
holds the cable up as high as possible yet allows it
to slide freely front and rear as the carrier moves
along the writing line.
c. Carrier Cable Deflector - Form the deflector front
or rearto prevent the cable from getting behind the
carrier (Fig. 86). Check along the entire writing
lineto make certain that the deflector does not rub
on the powerframe.
FIGURE 86. 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 wi II just touch the machine
side frame (left) when the carrier is resti ng tNO spoces
from the extreme left hand margin. This adj;Jst-
ment allows the carrier to operate freely along
the entire length of the writing line and allows the
velocity control cable to operate with a minimum
of flexing.
33
XG"",. R H Dust Shield
,~'\
FIGURE 86A. Dust Cover And Clamp
e.
,-
I
I
\..
"
Keyboard Cable Clamp - Loosen the clamp screw
(Fig. 87) and move the cable sheath forward or back
under the clamp to satisfy the following condition:
, ~ ". - - - - - - -
,-'
-- '\ f.) ~ __
_ /
-~-
/
I
---
\-
I
/
Clamp
./
--
FIGURE 87. Keyboa'rd 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
11
to .040
11
(Fig. 88). Movingthe
cable 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 .
'I~
1_1.. --
. 030
11
To .0401l~1~-;~
:-:- L -j
(Roller)
"..,- ",;",4.
- -Il~
.----1+-___. ,j 1
I r---
'j I
I
-- --
t, t I
I~
C--
O
-'
r 1
1:. 1
I ' 1
t I
,- -:--} '1
I '_' ( __ '.1
I :
I I
'I
I
I
I. J
I ;\. - - - - - ~ .-" -:- ~ -....,-' 1
\.- - - -' -"- ~ _ ....... - ~-:...:;
FIGURE 88. Roller Shifted To Low Velocity Lobe