Teletype 35 Disassembly And Reassembly

TELETYPE CORPORATION
Skokie, Illinois, U.S. A.
SECTION 574-236-702TC
Issue I, March , 1964
35 TAPE READER (PARALLEL OUTPUT)
DISASSEMBLY AND REASSEMBLY
CONTENTS
PAGE
1. GENERAL .•..•. .. .. . .. .. ... .
1
2.
REMOVAL FROM BASE
. ........
3
.
3. DISASSEMBLY AND REASSEMBLY .. 3
4.
REPLACEMENT ON BASE .....•.. 3
1. GENERAL
1.01 This section is concerned with the dis-
assembly and reassembly of 8-leveltape
reader units. Refer to related 574-236-series
sections for descriptive information, principles
of operatio :n, adjustments, and lubrication .
1.02 The instructions following separate the
tape reader into Its major subassemblies.
Further disassembly instructions are not des-
cribed, but may be undertaken if necessary.
1.03
The
disassembly instructions are ar-
ranged in a sequence that should be fol-
lowed when a complete disassembly of the u nit
into its major subassemblles Is required. The
removal of a specific subassembly may not
require the complete disassembly of the unit,
but will normally require removal of assod-
ated subassemblies in the same area.
1.04 References made to left or ~t, up or
down, front or rear, etc consider the
tape reader to be viewed from a position such
that the tape guide plate is to the viewe . r ' s
r ight and on top of the tape reader .
1.05 For additional information on the parts
and subassemblies referred to in the
following text, refer to the appropriate sect ion
on parts .
1.06 The tape reader is packed in an indi-
vidual cardboard carton when shipped
from the factory. Unpack the unit by cutting
the cardboard carton at sea led edges .
Be
carefu l not to damage the unit's finish .
1.07 The
cover, top, and tape
guide
plate(s)
may be removed for inspection, some
lubrication, minor repair, or minor adjustment
of the unit, however, a complete lubrication,
readjustment, and/or disassembly will neces-
sitate the disconnecting of the unit from any
ac or de potential and removal of the unit
from its base .
1.08 During the disassembly of a subassem-
bly, make a careful note of the pos ition
and order of removal of parts to facilitate re-
assembly. Reverse the disassembly proce-
dures to reassemb le. Where additional infor-
mation is required, reassembly instructions
are given.
1.09 Retaining rings are made of spring steel
and have a tendency to release suddenly.
Loss of these rings can be minimized as fol-
lows: Hold the retaining ring to prevent it
frottt rotating. Place a screwdriver blade into
one of the ring's slots. Rotate the screwdriver
in a direction to increase the diameter of the
retaining ring.
1.10 When unsoldering leads from termina ls,
the thermoplastic tubing over the leads
might be damaged from heat. Replace any
damaged tubing . During the resoldering oper-
ation, avoid using an excessive amount of sol -
der.
Be
especially careful to prevent solder
from falllng onto and becoming wedged between
moving parts and electrical contact springs.
1.ll After a ll disassembled parts have been
reassembled
and
any
readjustments
made, the unit should be checked for proper
operation before applying power to it. Manu-
ally rotate the cl utch mainshaft assembly until
the clutch shoe lever stops against its clutch
trip lever . Depress the armature extension
bail to relea se the main bail assembly while
selecting a code combination. Repeat process
and observe operation of the unit.
2. REMOVAL FROM BASE
2.01 Remove the three screws and associated
washers which secure the reader to the
base. Where the reader connector is not rigidly
mounted to
the
base
it will be
necessary to
disconnect the reader connector from its mating
plug before lifting the reader from the base.
Where the connector is rigidly mounted the
reader and base connectors are separated as
the reader is lifted from its base.
©
1964 by Teletype Corporation
All rights reserved.
Printed in U.S. A.
Page 1