Teletype 35 Disassembly And Reassembly

TELETYPE CORPORATION
SECTION 574-220-702
Skokie, Illinois, U. S. A.
Issue 1, March, 1963
35 TYPING UNIT
DISASSEMBLY AND REASSEMBLY
CONTENTS
PAGE
1. GENERAL
1
2. DISASSEMBLY AND REASSEMBLY . 3
TYPE BOX
3
PRINTING CARRIAGE 3
TYPE BOX CARRIAGE
3
FRONT PLATE
3
STUNT BOX 5
FUNCTION BAR
6
FUNCTION PAWL 6
FUNCTION LEVER 6
FUNCTION LEVER SPRING PLATE
6
CODE BARS
6
MAIN SHAFT
7
UPPER DRAW WIRE ROPE
7
LOWER DRAW WIRE ROPE
7
PLATEN (FRICTION FEED)
8
PLATEN (SPROCKET FEED) 8
SELECTOR CAM-CLUTCH
8
SELECTOR MECHANISM
9
CODE BAR POSITIONING
MECHANISM
9
RANGE FINDER ASSEMBLY
9
SELECTOR MAGNET ASSEMBLY . • • 9
1. GENERAL
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 cab-
inet. 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 attempting to remove them.
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 increase the diameter of the retainer for re-
moval.
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 the copylight plug) and remove the typing
unit from its base by removing the four screws
that secure it to its keyboard or base. Remove
the cable plug connector from the side frame.
Lift the typing unit off.
Note: On sets equipped with a form sup-
ply container on the rear of the cabinet, a
rearward foot extension should be in
© Teletype Corporation 1963
Printed in U.S.A. Page 1