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Bell System Practices 28 Disassembly And Reassembly

At&tco standard, reperforator-transmitter set, unit, and stand
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American Telephone and Telegraph Companyiilf
BELL SYSTEM PRACTICES
Teletypewriter and Data Stations
REPERFORATOR-TRANSMITTER SET,
28
DISASSEMBLY AND REASSEMBLY ROUTINES

1. GENERAL

2. DISASSEMBLY AND REASSEMBLY
A. 28 Reperforator-Transmitter Set . . . . . . . . . . . . .
B. 28 Reperforator-Transmitter Unit
Cross Shaft Assembly
Gear Bracket Assembly
(Fixed or Shift Gears) . .. .. .. .. .. . .. . .. . .. ..
Motor Unit
Nontyping Reperforator
Tape-winder Drive Bracket Assembly . . . . . .
Transmitter-Distributor
Typing Reperforator
Variable Features
C. 28A Reperforator-Transmitter Stand . . . . . . . . .
Clutch Shaft Assembly . .. . . .. . . . . . . .. .. .. .. .
Tape Winder Assembly
3. ASSOCIATED BELL SYSTEM PRACTICES . .
1. GENERAL
1.01
This section contains the specific disassembly instruc-
tions for the 28 reperforator-transmitter set, unit, and
stand, and where necessary, includes the detailed reassembly
information. The material herein, together with the section
entitled
Teletypewriter
sembly, General Information and Routines, provides the com­
plete disassembly and reassembly information for maintenance.
28 REPERF·TRANS SET,
UNIT, AND STAND
ASSEMBLY
P34.4 2 0
Page
ASS EM BL Y
1
- ©
Printed
UNIT, AND STAND
CONTENTS
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Apparatus,
DIS·
AND RE·
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1961
U.S. A.
in
SECTION
Issue 1, February, 1961
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Disassembly
.
P34.420
AT&TCo Standard
PAR. NO.
1.01
2.01-2.11
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2.01
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2.02-2.09
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2.07
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2.08
2.05
2.02
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2.06
2.04
2.03
2.09
2.10-2.11
2.11
2.10
3.01
and
Reas­

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Summary of Contents for Bell System Practices 28

  • Page 1 2.01-2.11 ..• 2.01 A. 28 Reperforator-Transmitter Set ..... 2.02-2.09 B. 28 Reperforator-Transmitter Unit .
  • Page 2 (4) Lift the unit from the stand. B. 28 Reperforator-Transmitter Unit 2.02 Nontyping Reperforator If So Equipped (1) Refer to the section entitled 28 Nontyping Reperforator, Disassembly and Reassembly Routines. Reassembly Note: After remounting a typing or non­ typing...
  • Page 3 32-point connector until the adjustment is completed. 2.05 Motor Unit Refer to the section entitled 28 Motor Unit, Disas­ sembly and Reassembly Routines. 2.06 Tape-winder Drive Bracket Assembly Remove the four mounting screws, lockwashers, and flat washers that secure the tape-winder drive bracket to the base.
  • Page 4 insert it, chad side up, into the slot in the right-hand reel core. Fig. I tiUARTEft TWIST CLOCkWISE CIUARTER TWIST CLOCKWISE' OR GOUMTEII-CLOCKWISE Fig. Tape Routing 2. 10 Tape Winder Assembly Remove the two screws and lockwashers that secure the ( 1) mounting bracket for the capacitor to the tape-winder base plate.
  • Page 5 (9) Remove the two screws, lockwashers, and flat washers that secure the inner bearing plate to the outer plate. (10) Remove the clutch shaft assembly. 3. ASSOCIATED BELL SYSTEM PRACTICES The following Bell System Practices provide additional 3.01 information that may be required for use with this section.

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