Teletype 28 Disassembly And Reassembly

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TELE TYPE CORPORATION
Skokie, Illinois, U.S.A.
SEC TION 573-140-702TC
Issue 1, July , 1964
28 TAPE PRINTER tJNIT (STOCK TICKER)
DISASSEMBLY AND REASSEMBLY
CONTENTS PAGE
1. GENERAL. . . . . . . . . . . . . . . . . . . 1
2. DISASSEMBLY. . ..... .... ..... 2
ITPEBOX. . . . . . . . . . . . . . . . . . . 2
DOUBLE PRINT HAMMER. . . . . . • . 2
TOP PLATE ASSEMBLY . . . • . . • • . 2
SELECTOR ASSEMBLY •..•. . . . . .
RIBBON FEED ASSEMBLY ...•...
CODEBAR ASSEMBLY ... • •. . . ..
TRANSFER LEVER ASSEMBLY . •..
MAIN SHAFT ASSEMBLY . .•....•
TYPEBOX RAlL POSITIONlNG
SHAFT ....... . ... . . ... . . . . .
TAPE CHUTE AND PLATEN
ASSEMBLY . . . . . . . . . ..... ... .
FRONT PLATE ASSEMBLY . ..... .
CLUTCH TRIP MECHANISM
ASSEM . B LY ................. .
3
3
3
3
4
4
4
4
4
3. REASSEMBLY . . . . . . . • . . . . . • . . 4
1. GENERAL
1.01 This section is issued to provide dis-
assembly and reassembly instructions
for the tape print er unit (stock ticker) (Figure
1)
and to present those instructions as a sep-
arate section. The disassembly outlined in this
section will break the tape printer down Into
major assemblies and mechanisms. (See Fig-
ure 1.)
1.02 Refer to the appropriate tape printer
parts section for exploded views Illus-
trating the mechanisms to be disassembled ,
for location and vis ual identillcation of parts
and detailed disassemb ly and reassembly pro-
cedures. Refer to the approp r iate tape printer
adjustmen t section for adjustments required
during and after r easse mbly. Tools required
for disassembly and reassembly are not fur-
nished with the equip ment but are described
in a separate tools sec tion.
1.03 If a part Is mounted on sh ims, note the
number of shi ms removed at each mount-
ing point. The same shim pile-up should be re-
plac ed when the part is remounted.
1.04 Note carefully the procedure used in
disassembly so r easse mbly may be by
reversing the procedure outlined below.
1.05 Retaining rings are made of spring
steel and have a tendency to release
suddenly when being removed . Loss of these
retainers can be minimized as follows:
(a) Hold the retainer with one band to
prevent it fr om rota ting.
(b) Place the blade of a suitable screw -
driver in one of the slot s of the r e -
tainer. Rotate the screwdriver in a direc-
tion to increase the diameter of the retainer
for
its
removal.
1.06 Avoid loss of springs in disassembly by
holding one spring loop with one hand
while carefully removing the opposite loop with
a spri ng book.
CAUTION:
00
NOT STRETCH OR DISTORT
SPRINGS IN REMOVING THEM.
1.07
References
made to ''le ft," "right," ''up, 11
"down," "front," or "rear'•
apply
to the
tape printer in its normal operat ing position,
with the viewer facing the front plate, with the
tape chute toward the viewer's left .
©
1964 by Teletype Corporation
All rights r eserved.
Printed in U.S.A.
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