Carrier And Rocker Mechanism - IBM Selectric Maintenance Manual

(b) Degree Wheel Method - With the machine at
zero degrees (cycle clutch latched at rest) se-
lect a -5 rotate, 0 tilt character and hand cy-
cle the machine slowly. The cycle clutch
spring should slip and stop driving at 170 to
175 degrees.
Nylon Stop
Adjustment
Cycle Shaft Must Be Detented
When Setting The .007" To
.015" Overthrow
.007" To' .015"
Pulley
FIGURE 44. Cycle Clutch Overthrow Stop - Late
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 .007" to
;015" (Fig. 44-late or Fig. 45-early).
FIGURE 45. Cycle Clutch Overthrow Stop - Early
CAUTION: After adjusting the cycle clutch overthrow
stop check the cycle clutch sleeve end playas the over-
throw stop may bind against the sleeve.
5. Fi Iter Shaft - The filter shaft is set during manufacture at
approximately 25° (Fig. 46). This adjustment is not crit-
ical. When the relationship
~f
the filter shaft gear has
been changed set the filter shaft for proper escapement
cam timing. Be sure and check the shift interlock cam
adjustment a Iso.
NOTE: Be sure to maintain .002" to .004" end playof
the filter shaft within the left hand filter shaft bearing.
The mounting of the left hand filter shaft bearing allows
.011" laterial play of the bearing. Do not confuse this
lateral play of the bearing with the filter shaft end play.
25° Vertical/\
Front of Machine .... _ - -
FIGURE 46. Filter Shaft
CARRIER AND ROCKER
Fine Alignment
1. Ti It Tube End Play - (machines prior to gearless ti It).
The tilt pulley should be adjusted up or down on the tilt
tube so that .002" to .004" end play exists in the tilt
tube (Fig. 47).
The tilt pulley is attached to the tilt tube by a set screw
and key against a flat surface on the ti It tube. The set
screw is accessible through a hole in the left side of the
carrier. Move the carrier to the right and remove the
tilt pulley spring and tilt detent spring. The tilt detent
spring stud can then be removed through the hole in the
2-12.1