Teletype 33 Adjustments

TELETYPE CORPORATION
Skokie, Illinois, U.S. A.
SECTION 574-124-700TC
Issue 6, November 1973
33 TAPE READER
ADJUSTMENTS
CONTENTS PAGE
1. GENERAL. . . . . . . . . • . . . . . . . . . 1
2. BASIC UNIT ...........•.....
Clutch Trip Area
Armature extension
............
Contact gap .•.•.•••.•..•.•..•
Feed magnet contact spring .•.•...
Magnet core .••....•.•.••.••.
Reader trip lever spring •.••..•.•
Shoe leve'r. • . • . • • • . • • • • • . . . . .
Trip magnet ...•.•...•.••....
Trip lever overtravel •.••.......
Trip magnet armature spring ...••.
Tape Reader Area
5
7
8
9
5
9
7
5
6
6
Armature spring . . . . . . • • • . . . . . 20
Blocking pawl . . • . . . . . . . . . . • . . 14
Blocking pawl spring. . . . . . • • . . • . 13
Contact wires spring. • . . . . • . . . . . 16
Control (or tape-out) contact wires . . 16
Control detent spring . · • . . . . . . • • . 19
Detent lever . . . • . . • . • • . • . . . . . 10
Detent lever spring • . . . . . . . . . . . 10
Feed pawl .................. 11, 12
Latch spring . . . . . . . . . . . . . . . . . 21
Reader mounting bracket
( early design) . . . . . . . . . . • . . . . . 22
Reader mounting bracket
(late design) . . . . . . . . . • . . . . . . . 23
Sensing contact wire spring . . . . . . . 19
Sensing pin ........ : . . . . . . . . . 15
Sensing pin spring • . • . . . . . . . . . . 15
Start contact wires . . • . . . . . . . . . . 17
Tape lid latch handle. . . . • . . . . . . . 18
Tape lid spring . • . . . . . . . . . . . . . 18
Tape-out pin spring . • . . . . . . . . . . 20
Tight tape lever spring . . . . . . . . . . 19
Upstop spring . . . . • . . . . . . . . . . . 13
3. VARIATIONS TO THE BASIC UNIT. . 24
Reset and busy switch timing . . . . . 24
1. GENERAL
1. 01 This section provides adjustment and
maintenance information for the 33 tape
reader.
It
is reissued to include engineering
changes. Marginal arrows indicate changes.
1. 02 In the adjustments covered in this section,
location of clearances, position of parts,
and point and angle of scale applications are
illustrated by line drawings. Tools required to
perform adjustments are contained in TP185830
Tool Kit and are listed in Maintenance Tool
Section 570-005-S00TC.
Note: An adjustment must be performed even
if
the accompanying illustration is not an exact
duplication of the adjustment area.
1. 03 The sequence in which the adjustments
appear should be followed when a com-
plete readjustment of the tape reader is under-
taken. No adjustment should be undertal,{en
without completely understanding the procedure
and the requirements. Read a procedure all the
way through before making an adjustment or
checking a spring tension.
Note 1: Be sure to check all related adjust-
ments (1. 07).
Note 2: Remove all electric power before
checking or performing adjustments.
1. 04 References to left, right, front, rear,
etc consider the tape reader to be viewed
from a position where the feed wheel faces up
and the lid latch is located to the viewer's right.
Orientation references to the clutch trip area
consider the armature extension to be facing up
with the contact bracket pry points located to the
viewer's right.
©
1964 by Teletype Corporation
All rights reserved
Printed in U.S.A.
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