Teletype 35 Disassembly And Reassembly

TELETYPE CORPORATION
SECTION 574-222-702TC
Skokie, Illinois, U. S. A.
Issue 1, April, 1963
35 KEYBOARD FOR AUTOMATIC SEND-RECEIVE SET
DISASSEMBLY AND REASSEMBLY
1. GENERAL
1.06 Avoid loss of springs in disassembly by
holding one spring loop with the left hand
while gently removing the opposite loop with a
spring hook. Do not stretch or distort springs
in removing them.
1.07 Raise cabinet lid . or enclosure cover
(after removing the control panel bezel)
and remove the typing unit from its base by re-
moving the four screws that secure it to its key-
board or base. Remove the cable plug connec-
tor from the side frame. Lift the typing unit off.
CONTENTS
PAGE
1. GENERAL
1
2. DISASSEMBLY AND REASSEMBLY .
1
SIGNAL GENERATOR
1
KEYBOARD
4
1.01 Disassembly, as outlined in this section,
covers a procedure for removing the
principal sub-assemblies which make up the unit.
1.02 The technician should refer to the ex-
ploded views found in the appropriate
parts literature for an illustration of the mech-
anism to be disassembled, for location and
visual identification of parts and detailed dis-
assembly and reassembly features.
1.03 Most maintenance, lubrication and ad-
justments can be accomplished simply
by removing the subject component from the
cabinet. If possible, disassembly should be con-
fined to sub-assemblies, which can, in some
cases, be removed without disturbing adjust-
ments. When reassembling the sub-assemblies,
be sure to check all associated adjustments,
clearances and spring tensions.
1.04 If a part that is mounted on shims is re-
moved, the number of shims used at
each of its mounting screws should be noted so
that the same shim pile-up can be replaced
when the part is remounted.
1.05 Retaining rings (Tru-arcs) are made of
spring steel and have a tendency to re-
lease suddenly when being removed. Loss of
these retainers can be minimized as follows:
Hold the retainer with the left hand to prevent
it from rotating. Place the blade of a suitable
screwdriver in one of the slots of the retainer.
Rotate the screwdriver in a direction to in-
crease the diameter of the retainer for removal.
Note: On sets equipped with a form supply
container on the rear of the cabinet, rear-
ward foot extensions should be in position
to prevent the cabinet from tilting when
any of the components are removed.
1.08 Remove the four TP151549 screws that
secure the base to the cradle or sub-
base. Disconnect the cable plug from the con-
nector at the rear of the keyboard base. Remove
the base with the motor unit and non-typing re-
perforator still in position.
2. DISASSEMBLY AND REASSEMBLY
2.01 In removing a subassembly from the
unit, the procedure followed and the lo-
cation from which parts are removed must be
carefully noted so that reassembly can be done
correctly. Where no specific instructions are
given for reassembly, reverse the procedure
used in removing it.
SIGNAL GENERATOR
2.02 To Remove: Take cover off contact box
and disconnect the signal line leads. Pull
up on the line cable, with its strain relief and
grommet intact, and push it aside out of the way.
2.03 Remove two mounting screws at front of
the signal generator frame casting and
one at the rear.
2.04 Hold the TP170372 universal bail back
so that the TP170392 non-repeat lever
clears, without stretching its spring, when the
signal generator is lifted out.
© Teletype Corporation 1963
Printed in U.S.A. Page 1