IBM System/34 Maintenance Manual page 369

27-653 HEAD LOAD BAIL ASSEMBLY SERVICE
CHECK AND ADJUSTMENT
1. Remove the 72MD unit (see paragraph 27-200).
2. Turn the cam
CD
counter clockwise until the cam
stops.
3. Move the head carriage assembly. in· both
directions as far as it will go and ensure that there
is always a gap between the bail assembly
0
and
the head carriage tabs
O.
4. If the gap. is not correct, turn the bail adjusting
screw
e
until the bail assembly
0
just touches
the head carriage tab
O.
5. Turn the bail adjusting screw clockwise 90 degrees
to make a gap of 0.25 to 0.5 millimeters (0.010 to
0.020 inches) between the bail assembly
0
and
the head carriage tab
O.
6.
Repeat step 3 and check for the gap.
7. Reinstall the 72MD unit (see paragraph 27-200).
27-655 HEAD LOAD BAIL ASSEMBLY REMOVAL
AND REPLACEMENT
Removing the Head Load Bail Assembly
1. Remove the picker/cam casting assembly (see
paragraph 27-400).
'2.
Insert a strip of clean paper" between the heads
e·
3.
Loosen the clamp screw
G
on the head load bail
pivot shaft
e.
4.
Slide the pivot shaft
e
out and remove the bail
assembly • .
84
Reinstalling the Head Load Bail Assembly
1. Reinstall the head load bail assembly. and pivot
shaft
e.
(Ensure that the bail
0
is on the correct
side of the head carriage tab
0.)
2. Tighten the clamp screw
G
on the head load bail
pivot shaft.
3. Remove the strip of paper. from between the
heads
e.
4. Reinstall the picker/cam casting assembly (see
paragraph 27-400).
27-660 COLLET ASSEMBLY REMOVAL AND
REPLACEMENT
Removing the Collet Assembly
1. Remove the picker/cam casting assembly (see
paragraph 27-400).
2. Loosen the clamp screw. on the collet assembly
pivot shaft
O.
3. Slide the pivot shaft
0
out.
4. Remove the collet assembly
e.
Reinstalling the Collet Assembly
1. Reinstall the collet assembly
e.
2. Reinstall the pivot shaft
O.
3.
Tighten the clamp screw. on the collet assembly
pivot shaft
O.
4.
Reinstall the picker/cam casting assembly (see
paragraph 27-400).
27·653
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