IBM Selectric Maintenance Manual page 76

M. lever Stop
.-
• 360"to .375"
FIGURE 151. Multiplying Lever Stop (New Style)
Figure 152 illustrates the first level multiplying lever
stop· used on the new style index mechanism. This stop
should be adjusted both horizontally and vertically.
The stop is adjusted vertically so that the multiplying
lever will operate above and below a horizontal position
by an equal amount. The horizontal and vertical adjust-
ments of the stop must be made alternate Iy unti I both are
correct.
.360" to .375"
FIGURE 152. Multiplying lever Stop (Early level)
3. Index Link - Use the following procedure to adjust the
index link:
a. As a preliminary step, loosen the platen overthrow
stop and move it to the rear (Fig. 153).
Platen Overthrow
Stop Moved To The
(Index Operation Manually
Ol'l ..
rat ..
d
Through) Rear
Index Link
FIGURE 153. Index Link Adjustment
b. With the platen inst911ed, hold the detent roller dis-
engaged from the platen ratchet with a spring hook
while an index operation is manually cycled. At
the completion of the operation allow the detent
roller to re-enter the platen ratchet. If the index
link is properly adjusted the detent roller will seat
between two ratchet teeth without causing any ro-
tational motion to the platen. Adjust the link to ob-
tain this condition.
4. Platen Overthrow Stop - With the index cam rotated to
its high point, adjust the platen overthrow stop to clear
the index pawl by .005" (Fig. 154) .
..l.o...-_ _
Index Link
FIGURE 154. Platen Overthrow Stop
5. Index Selection Cam
2-46
a. With the index cam latched at rest and tbe selection
lever in the double line space position, adjust the
selection cam front to rear so that the index pawl
clears the platen ratchet by .015" to .050" (Fig.
155).
Index Selector Cam
FIGURE 155. Index Selection Cam Adjustment
b. Adjust the selection cam up or down so that the in-
dex pawl is centered on the cam surface with the
selection lever in the single line space position
(Fig. 156).
Pawl Centered
FIGURE 156. Vertical Adjustment Of
Index Selection Cam