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Rev. E
IDLER PULLEY ASSEMBLY - AF
3. Remove nut, screw, washer (AL-121, 96, 120) holding left
ribbon releaser (AL-33 and left rod link (AL-9B).
4. Remove screws, washers (AL-52, 53, 54) and remove left
ribbon holder plate (AL-B).
5. Remove three screws (AA-93) and washers (AA-94, 95), and
remove damper cylinder (AA-B5).
6. Remove four screws, washers (AF-41, 42) from printer base
(AH-1) and remove entire idler pulley unit (See Fig. AF).
7. When replacing idler pulley unit, reverse removal steps 1
through 6.
(Note, in step 1, when replacing main belt,
that the ribbon feed rack (AL-1 should be in left-most
position, and the idler pulley support bracket (AF-40) is
in extreme right position and parallel to center line of
printer.
B.
IDLER PULLEY SHAFT (AF-22)
1.
To remove shaft and parts from idler pulley bracket support
(AF-40) perform the following:
(a) Apply removal procedures from para. 5.2.6.2.A.1. through
5.2.6.2.A.6.
(b) Remove snap ring (AF-34) from shaft (opposite end to
pinion).
Before removing nut (AF-30) in next
step (c), bend nut holder (AF-29)
so that nut can rotate.
(c) Using a 5.5 mm (7/32-in.) wrench, remove nut (AF-30)
and nut holder securing the two ends of brake shoe
holders (AF-43).
(d) Spread brake shoe holders (AF-43) (with attached brake
shoes) and remove small threaded shaft (AF-2B) and
attached spring (AF-27).
(e) Using a 2 mm (0.07B-in.) allen wrench, loosen two
set-screws on friction sleeve (AF-31), (note that
when re-installing sleeve, keep idler pulley in side
contact with sleeve and maintain one set-screw on
fl at of shaft).
5-22
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