Teletype 28 Adjustments

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TELETYPE CORPORATION
Skokie, Illinois, U.S. A.
SECTION 573-118-700TC
Issue 7, February, 1966
28 TYPING REPERFORA TOR AND TAPE PRINTER
ADJUSTMENTS
CONTENTS PAGE
1.
GENERAL . . . . . . . . . . . . . . . . . . 6
2. BASIC UNITS . . . . . . . . . . . . . . . . 11
Chad Chute Assemblies for Fully
Perforated Tape
Chad chute (for self-contained
typing reperforator set) . . . . . . . . . 7 3
Chad chute assembly (for auxiliary
reperforator- automatic send-
receive) . . . . . . . . . . . . . . . . . . . . 76
Chad chute assembly (for keyboard
reperforator- automatic send-
receive) . . . . . . . . . . . . . . . . . . . . 75
Chad chute assembly (for multiple
reperforator set) . . . . . . . . . . . . . . 7 4
Function Mechanism
Adjusting arm spring (earlier
design). . . . . . . . . . . . . . . . . . . . . 23
Adjusting arm torsion spring
(later design) . . . . . . . . . . . . . . . . 23
Clutch shoe lever . . . . . . . . . . . . . . 11
Clutch shoe lever spring . . . . . . . . . 12
Clutch shoe spring . . . . . . . . . . . . . 12
Follower lever . . . . . . . . . . . . . . . 23
Function clutch drum end play . . . . . 11
Function clutch latch lever spring. . . 48
•Function clutch release lever spring . 46
Function clutch trip lever . . . . . . . . 22
Main trip lever spring . . . . . . . . . . 23
Release lever downstop bracket . . . . 46
Reset arm . . . . . . . -. . . . . . . . . . . 22
Reset bail trip lever . . . . . . . . . . . . 31
Rocker bail . . . . . . . . . . . . . . . . . . 24
Rocker bail guide bracket . . . . . . . . 24
Punch Mechanism
Detent lever spring . . . . . , . . . . . . 43
Feed pawl (preliminary) • . . . . . , . . 32
Feed pawl spring . . • . . • . . . . . . . • 43
Latch lever clearance . . . . . . • . . . , 32
Perforator drive link spring . . . . . . 28
CONTENTS
PAGE
Tape depressor slide spring . • . . . . 44
Tape guide assembly spring . • . . . . 37
Tape guide (early design) . . . . . . • • 44, 45
Tape guide (latest design) . . . . • . . • 45
Tape guide spring . . . . . . . . • . • . . 45
Tape shoe torsion spring. . • . . • • • • 44
Toggle bail eccentric (preliminary) . • 28
Toggle operating arm . . . . • • • . • • • 28
Punch Mechanism (For Chadless Tape)
Detent lever • . . . . . . . • . • . . . • • • 34
Feed hole lateral alignment . . • • • • • 35
Feed hole spacing (final) • . . • • . . • • 33
Feed hole spacing (preliminary) . • . . 33
Perforator position . . • . . . • . • • • • 27
Punch pin penetration . . . . . . • • . . • 29
Punch slide downstop plate position. • 29
Punch slide guide . . . . . . . • • • • • • 29
Punch slide latch spring • . . . • . • • • 25
Punch slide spring . . . . • . . • • • • • • 36
Retractor bail springs . • . . . . . . • • 36
Tape guide assembly spring. . . . . • • 37
Tape guide spring (punch block) . • • • 37
Tape guide spring (tape guide) • • • • • 37
Punch Mechanism (For Fully Perfo-
rated Tape)
Perforator position . . • • . • • • • • • • 26
Punch pin penetration • . • . . • • • • • . 30
Punch slide downstop position . . • • • 30
Punch slide guide . . . . . . . . . . • . . • 30
Punch slide latch springs • • . • • • . • 25
Punch slide spring . . • . . • . . • • • • • 42
Tape guide assembly spring . • • • • • 42
Tape guide spring (punch block) • . • • 42
Tape guide spring (tape guide) • • . • • 42
Punch Mechanism (For Fully Perfo-
rated Tape with Indentations of Feed
Wheel Between the Feed Holes)
Detent . . • . . . . . . . • • . . . . . . • • • 41
Feed hole lateral alignment • • • • • • • 41
Feed hole spacing (final) • . . • • • • • • 40
© 1958, 1959, 1960, 1961, 1962, and 1963 by Teletype Corporation
All rights reserved.
Printed in U.S. A. Page 1