IBM 01 Maintenance Manual page 26

MODEL 01 CUSTOMER ENGINEERING
rack for a worn tooth. Shimming the rack so that the escape-
ment pawls have a different contact area or replacement of
the rack will be necessary. /
LUBRICATE
the universal bar with
mM
lubricant 17 on
its'
contact surface during installation or replacement. Apply
mM
ET oil sparingly to the pivot points of the escapement
pawls and trip lever whenever they appear dry.
SPACE BAR MECHANISM
(
The space bar mechanism operates the escapement with-
out printing characters. The space bar key lever. trips the
cam which (by means of a short link, bell crank and an
operating link) pulls on the escapement lever plate. This
action causes the escapement lever to actuate the escape-
ment pawl assembly and allows the carriage to move one (
space (Figure 7).
Adjustments
1. Check for binds in the space bar and key lever.
2. Adjust the cam unit the same as a letter cam.
3. Adjust the operating link so that, when turning the
motor coupling by hand, the escapement pawls will
be tripped just before the high point of the cam is
reached. On the high point of the cam, check that the
pawl spacer does not choke off.
Powl Brocket Assembly
Figure 7. Space Bar Mechanism
14
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