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When making this check, be sure the dog is
not moving into a flute of the print clutch shaft.
2.
Check for 0. 072" to 0. 082" overlap of the print
clutch dog on the print clutch latch (Figure 4-2).
4. 3. 2 Restore Lever Adjustment
1.
When the restore lever is fully operated by
the high lobe of the print cam, the print clutch
latch should have O. 032" relatching clearance
to the tip of the armature knockoff lever. The
tolerances on this clearance are
+o.
012" and
-0. 017" (Figure 4-4).
2.
At the same time, there must be a minimum
0. 002" clearance between the restore lever and
the bottom of the slot in the restore lever
support bar (Figure 4-4).
Loosen the holding screws and pivot the restore
lever support bar on its dowel pins to obtain these
clearances. Check several positions across the
unit to insure that no restore levers are bottoming
on the support bar.
4. 3. 3 Restore Lever Removal
Remove two dowel pins and four holding screws, two
in each print unit side frame. Slide the restore
lever support bar out through the front of the mach-
ine. To remove an individual restore lever, remove
the clip and carefully force out the pivot rod to the
desired lever. As the individual lever is removed,
take care that the compression spring is not lost.
Restore Lever
On High Point
Support Bar
Figure 4-4. Restore Lever
4-4
1132 FEMM (12/66)
Replace in reverse order, being careful to guide
the compression spring into position with no bind.
4. 3. 4 Print Clutch Dog Removal
1.
Rock the print cam detent assembly away from _
the print cams as follows:
a.
Remove the rear holding screws and dowel
pins far enough to clear the detent support
bar.
b.
Loosen the front holding screws and rock
the detent assembly forward.
2.
Remove the print cam guide comb bar rear
upper.
3.
Rotate the cam until the dog pivot is up.
4.
Spread the print cams apart slightly and slide
the clutch dog pivot off its stud.
5.
Turn the retaining clip and remove the clutch
dog spring from its stud. Rotate the print cam
while removing the print clutch dog and spring.
The clutch dog and spring can be replaced
by reversing the removal procedure.
It
may
be more convenient to place the clutch dog pivot
on its stud before placing the dog spring on its
stud.
In
either case, be sure to turn the re-
taining clip back into position to hold the spring.
4. 3. 5 Print Clutch Shaft Removal
1.
Remove the carriage (see 4. 7.
2).
2.
Remove the print wheel assembly.
3.
Remove the holding screws from the print cam
rear upper guide comb bar and "tie the guide
comb to the print cam clutch shaft to keep the
cams evenly spaced and the dogs on their pivots.
4.
Remove the left ribbon feed support bracket
after disconnecting the operating link.
5.
Remove the bearing caps after removing the
three screws in each. Exercise caution as
these bearing caps are not replaceable.
6.
The print clutch shaft and print cams can now
be lifted from the machine.
7.
The print wheel drive gear can now be lifted
from the machine.
4. 3. 6 Print Clutch Shaft Assembly
1.
Before reassembly, loosen the print magnet
unit and move it toward the front of the machine.
Also, tilt the print cam detent assembly up and
toward the front of the machine.
2.
Set the removed shaft or shafts in position with
the bearings and gears lined up.
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