Carrier And Rocker - IBM Selectric Reference Manual

4.
Cycle Clutch Overthrow Stop'- With the cycle clutch
latched and the cycle shaft backed up against the check
pawl in its rest position, advance or retard the overthrow
stop on the cycle clutch collar so that it will allow the
cycle shaft to overthrow its latched position by .001'1
to .015" (Fig. 91 or Fig. 92).
--
/
I
Loosen To Adjust
Collar
(
\
\
~
"-
/~oosen
- 2 Screws
~~
_____ To Adiust Nylon Stop
FIGURE 92. Cycle Clutch Overthrow Stop,
Early Style
NOTE: It is best to set this ad justment on the low side
of the tolerance. Too much cycle shaft overthrow com-
bined with excessive backlash in the gear train could
allow the fi Iter shaft to overthrow into the path of the
character interposers. This condition could result in
intermittent keyboard lock-up or intermittent touch pro-
blems.
CAUTION: After adjusting the cycle clutch overthrow
stop check the cycle clutch sleeve end playas the over-
throw stop may bind against the sleeve.
CARRIER AND ROC KER
1. Tilt Tube End Play - (machines prior to gearless tilt).
The tilt pulley should be ad justed up or down on the ti It
tube so that .002" to .004" end play exist in the tilt
tube (Fig. 93).
The ti It pulley is attached to the ti It tube by a set screw
and key against a flat surface on the ti It tube. The set
screw isaccessible through a hole in the left side of the
carrier. Move the carrier to the ri ght and remove the
tilt pulley spring and tilt detent spring. The tilt detent
Yoke
~~:=~..-_
Tilt Pulley
FIGURE 93. Tilt Tube End Play Adjustment
spring stud can then be removed through the hole in the
carrier. The hole in the carrier and rocker wi II make
thetiltpulleysetscrew accessible with a fluted wrench.
NOTE: The height of the tilt sector gear is established
by shimming between the gear and the top of the yoke.
The height is set to obtain the proper backlash between
the ti It sector gear and the ti It ring gear. Be sure to
re-install the shim if disassembly is necessary.
2. Rotate Shaft End Play - Adjust the rotate pulley up or
down on the rotate shaft so that .002" to .004" end play
exists in the rotate shaft relative to the tilt tube or yoke
(Fig. 94 A
&
B).
~
Tilt Tube
, Rotate Pulley
Rotate Shaft Wedging Block
FIGURE 94A. Gear Type Tilt
FI GURE 94B. Gearless Ti It
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