IBM Selectric - Page 46

Excessive side play in the ti It detent wi II cause poor
vertical alignment. A bind in the tilt detent will affect
both the vertical and horizontal alignment because it
will retard or restrict the seating of the tilt detent which,
in turn, will retard or restrict the seating of the rotate
detent.
6. Rotate Detent - Adjust the front and rear guides so that
the rotate detent wi II operate freely with no side play
(Fig. 97).
Excessive play in the detent wi II result in poor hori-
zonta alignment because the detent cannot positively
position the type head.
As little Clearance
As Possible, No Binds~~~ ... H
LATE
As little Clearance
As Possible, Nf:) Binds
EARLY
Adiust Guides To
Obtain Proper Clearance
FI GURE 97. Rotate Detent Guides
7. Rocker Shaft - Adjust the rocker shaft left or right to
obtain.002
11
to .004
11
side play in the rocker (Fig. 98).
The side play exists between a C-clip around the shaft
at the right of the rocker and a thrust washer against the
carrier casting at the left of the rocker. The rocker shaft
is he Id in place by a set screw at the left end of the shaft.
Excessive play in the rocker could affect horizontal al ign-
ment by allowing the rocker to shift its position left to
right.
8.
9.
2-28
C-Clip
FI GURE 98. Rocker Shaft Adjustment
Print Sleeve End Play - Adjust the print sleeve end play
to be .002
11
to .004
11
• The end play is controlled by the
print cam on the right hand end of the sleeve. The ad-
justment should not be gained with the ribbon lift cam
because its set screw tightens down into a dimple in the
print sleeve fixing the position of the cam (Fig. 99).
End Play Adjust By Print Cam
FI GURE 99. Print Sleeve End Play
Detent Cam Follower Bracket - Position the detent cam
follower bracket which is mounted to the left side of
the carrier by two screws to satisfy the following con-
ditions:
a. Front to rear for a clearance of .015
11
- between the
print sleeve and the end of the pin on the cam fol-
lower (Fig. 100a).