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9.2.28 Carrier Main and Support Shafts
Adjustment
Two adjustments are required for the carrier. The
main shaft is adjusted for full contact of the carrier
bearing on the shaft. The carrier bracket support
bearing is adjusted for
0.001
inch to
0.003
inch
(0.025
mm to
0.076
mm) clearance to the support
shaft.
1.
2.
Remove the printer cover
(9.2.1).
Adjust the carrier support shaft bearing as
follows:
a. Separate the printer from the power
supply
(9.2.2).
b. Slightly loosen the socket head screw
H
at the end of the bearing eccentric stud
m .
Remove the ribbon drive clutches to
gain access.
c. Rotate the eccentric stud to obtain
0.001
inch to
0.003
inch
(0.025
mm to
0.076
mm)
mm) between the bearing and shaft
m
while pushing on the bottom of the carrier
as shown by the directional arrow.
d. Tighten the socket screw
Ii
on the end
of the bearing eccentric stud.
e. Recheck clearance and adjust, if necessary.
f. Reassemble the printer and power supply.
0.001
inch to
0.003
inch
Ii.1
(0.025
mm to
0.076
mm)
,
3.
4.
5.
Adjust the carrier main shaft (hexagonal) as
follows:
a. Loosen the retaining screws at the shaft
ends.
b. Rotate the shaft until the full width of the
bearing
m
rolls on the shaft flat
II.
The mark
m
on the left end of the main
shaft must be up.
c. Hold the shaft in this position with an
adjustable wrench (take care not to damage
the flats) and tighten the screws in the
shaft ends.
Check adjustment as follows:
a. Insert a strip of carbon paper about
3/16
inch
(4.70
mm) wide and
5
inches
(127.0
mm) long between the bearing and shaft
iii.
b. Push the carrier over the carbon paper.
c. Check for a smooth, even mark; readjust
if necessary.
Reinstall the printer cover.
Ii
Carrier Main
Shaft Left
End
o
Bearing
9-36
9.2.29 Carrier and Main Shaft
Removal
1.
2.
3.
4.
5.
6.
7.
8.
9.
Turn power off at the operator control panel.
Remove the covers
(9.2.1).
Remove the print emitter
(9.2.19).
Remove the print head
(9.2.34).
Separate the printer from the power supply
(9.2.2).
Loosen the belt clamp
D
and remove
the belt from the motor. For installation,
be sure the belt alignment is correct.
Remove the print emitter pickup
(9.2.18).
Remove the ribbon drive lines
(9.2.44).
Remove the screws from each end of the
carrier main shaft
D.
10.
Pivot the carrier and main shaft around
the carrier support shaft
13
to clear the
A-frame
m.
11.
Lift the carrier out. For installation, be
sure the mark
m
on the left end of the
main shaft is up.
12.
Remove the ribbon drive assembly
(9.2.40).
13.
To reinstall the carrier, reverse this proce-
dure. Be sure to perform the following
checks and/or adjustments.
a. Carrier main shaft and carrier support
shaft
(9.2.28).
b. Print head
(9.2.34).
c. Print emitter pickup
(9.2.18).
d. Left margin
(9.2.21).
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