IBM 01 Maintenance Manual page 104

REFERENCE MANUAL
MODEL Al
Figure 21. Shift Mechanism.
RING AND CYLINDER
adjustment of the platen must be
properly set before attempting to adjust the shift mechan-
ism.
1.
'SHIFT STOP SCREWS
should be adjusted so the lower
case characters appear even on top and bottom (Figure 21).
2.
MOTION ADJUSTMENT
consists of setting the pair
of locking nuts on each stop screw so the upper characters
print on the same line as the lower case.
3.
CAM CLEARANCE
should be adjusted by means of
the adjustable stop so the cam release lever lug will drop
behind and clear the cam lug by the amount of the re-
lease lever lug width when tripped with the power off.
4.
LINK BRACKETS
should be adjusted by means of the
toggle bracket screws until the clearance between the
pusher and either pin on the toggle lever assembly is
equal without regard for the .actual amount of the clear-
ance. Recheck motion after any adjustment of these
brackets.
5.
CAM RELEASE LINK
should be adjusted so the cam
will be released when the key is depressed 1/2 to 3/4 of
its travel.
6.
PUSHER LINK
should be adjusted so that when the
key lever is fully depressed, the upper pusher arm can
contact the upper pin at a point 3/32" above the lower
edge of the upper pusher arm. The upper arm should not
override the upper pin.
7.
ACTUATING LINK
is to be adjusted so the pusher
clears the pin by 1/32" to 1/16".
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