Back Space - IBM 01 Maintenance Manual

C. E. REFERENCE MANUAL
Improper latch stop adjustment, allowing excessive
clearance between tab lever and tab rack.
Friction governor too tight.
Insufficient carriage tension.
Tab stop not completely set.
See that the operator is not beating the tabular
operation. This would appear as tabulating short
by less than a full space.
Rebound check lever may be too low and passing
under the tab stop or may have excessive clear-
ance with the tab stop.
TABULATES EXTRA SPACES
Tab lever not getting sufficient bite on the tab stop.
Friction governor too loose.
Excessive carriage tension.
Tab stop improperly set.
CARRIAGE LOCKING
Tab rebound Check lever holding tab stop too tightly.
Improper latch adjustment not allowing tab lever
to unlatch.
Friction governor too tight not allowing the tab
lever to knock off.
Rebound check lever too high, catching and holding
the tab lever out.
BACK SPACE
FAILS TO OPERATE
Bind in cam.
Improper cam adjustment.
Bind in linkage.
Broken, bent or improperly adjusted guide lug.
Fractured cam or links.
Broken escapement spring or comer bell crank spring.
Final stop adjusted too close.
Adjust height of back space pawl.
Interlock binding or interfering with back space
pawl.
Binding keybutton.
Glazed power roll.
BACKS TWO SPACES
Cam repeats.
Excessive play in linkage.
Improper final stop adjustment.
Improper guide lug adjustment.
INTERMITTENT FAILURE
Lack of lubrication on back space pawl.
Improper cam adjustment.
Fractured cam.
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