Tabular Mechanism - IBM 01 Maintenance Manual

TABULAR MECHANISM
Preventive Maintenance, All Models
THE TAB GOVERNOR can pick up moisture when unused
for long periods and can contribute to sluggish tabulation.
Clear all stops, latch the tab lever out and run the car-
riage back and forth several times to polish the friction
surface.
THE TAB LATCH, as well as all moving parts of. the tab
mechanism, must be properly and regularly lubricated to
avoid corrosion and wear.
Adjustments
Standard Models Except Decimal Tabulation
Com Release link
Illfermediah:
Tab lever
Adjustable Stop
Figure 48. Double Link Tabular Mechanism
TO ADJUST THE CAM, first adjust the cam stop so that
when the cam is released, with the· power off, the cam
lug will just drop behind the rear lug of the release
lever. With the single link tabular mechanism, which
has a single link from the cam to the tab lever, the cam
may be set a trifle closer so the cam release lever will
rest on the rear half of the cam lug.
ADJUST THE CAM RELEASE LINK so that .the cam is
released when the key lever has traveled two-thirds of
its downward stroke.
THE LINK BETWEEN THE CAM AND THE INTER-
MEDIATE TAB LEVER should be adjusted so that the
forward edge of the intermediate level: will be vertical
with respect to the frame. This adjustment applies only
to machines with the double links (Figure 48).
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