Bell System Practices 28, Disassembly And Reassembly

Page: 1 / 6

- ©
1961-
.
American Telephone and Telegraph Companyiilf
Printed
in
U.S. A.
BELL SYSTEM PRACTICES
Teletypewriter and Data Stations
SECTION
P34.420
Issue 1, February, 1961
AT&TCo Standard
28
REPERFORATOR-TRANSMITTER SET,
UNIT, AND STAND
DISASSEMBLY AND REASSEMBLY ROUTINES
CONTENTS PAR. NO.
1. GENERAL 1.01
2. DISASSEMBLY AND REASSEMBLY
. . . . . . . •
2.01-2.11
A. 28 Reperforator-Transmitter Set . . . . . . . . . . . . . 2.01
B. 28 Reperforator-Transmitter Unit
. . . •
. . . . . . . . 2.02-2.09
Cross Shaft Assembly
. . . . . . . . . . . . . . . . . . . . . •
2.07
Gear Bracket Assembly
(Fixed or Shift Gears) . .. .. .. .. .. . .. . .. . .. .. 2.08
Motor Unit .
. . . . . . . . . . . . . . . •
. . . . . . . . . . . . . . . 2.05
Nontyping Reperforator
. . . . . . . . . . . . . . . . . . . •
2.02
Tape-winder Drive Bracket Assembly . . . . . . 2.06
Transmitter-Distributor
.
. . . . . . . . . . . . . . . . . . . . 2.04
Typing Reperforator . . . .. . . . . . .. . . . . .. . . .. . 2.03
Variable Features . . . . . . . . . . . . . . . . . . . . . . . . . . 2.09
C. 28A Reperforator-Transmitter Stand . . . . . . . . . 2.10-2.11
Clutch Shaft Assembly . .. . . .. . . . . . . .. .. .. .. . 2.11
Tape Winder Assembly
.
. . . . . . . . . . . . . . . . . . . . 2.10
3. ASSOCIATED BELL SYSTEM PRACTICES . . 3.01
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 Apparatus, Disassembly and Reas­
sembly, General Information and Routines, provides the com­
plete disassembly and reassembly information for maintenance.
28 REPERF·TRANS SET,
UNIT, AND STAND
DIS·
ASSEMBLY
P34.420
AND RE·
Page
1
ASS EM BL Y