IBM 01 Maintenance Manual page 174

REFERENCE MANUAL MODEL 81
4. Remove the tab lever pivot stud and two lock nuts.
Clearance may be obtained by pivoting the upper
line lock bellcrank out of the way.
5. Disconnect the three springs from the tab lever, and
lift the tab lever from the top of the machine.
During reassembly of the tab lever to the horseshoe
bracket, allow a slight end play of the pivot stud when
tightening the lock nuts. Over-tightening the nuts on the
pivot stud can cause the tab lever to move away from a
true rest position.
TAB LEVER MOUNTING BRACKET
1.
Remove the rear cover and paper table.
2. Disconnect the tab operating link and the vertical
line lock bellcrank link.
3. By rotating the upper line lock bellcrank to get
clearance, remove the tab lever pivot stud.
4. Remove the two screws from the horseshoe bracket
so that the bracket may be maneuvered under the
left end of the carriage and out of the machine.
Adjustments
1.
CAM CLEARANCE:
Refer to "Space bar adjustment
1," this section.
2. CAM RELEASE LINK.
Adjust so that the cam is released
when the key lever is depressed 2/3 of its downward travel
(Figure 29).
3.
TAB LEVER HEIGHT.
Refer to "Margin Release adjust-
ment 1," this section.
Margin Control Lever
Fi4ure 30. Tab Rack Lateral Adjustment
35