Teletype 28 - Page 40

SECTION 573-118-700TC
2. 30 Punch Mechanism for Chadless Tape (continued)
Note: Adjustments on this page do not apply to tape printer.
(B) TAPE GUIDE ASSEMBLY SPRING·
Requirement
Tape guide assembly should be free to
return to rest against tape guide block
after a
Min 16 oz -------------,
is used to pull tape guide assembly away
from block.
To Adjust
Replace spring if requirement is not met.
If tape guide assembly is not free to
return, reposition tape guide assembly
mounting post to free tape guide
assembly.
I
I
I
: 0
I
I .---.,
I I 0 1
._... L.;....J
0
0
.....,---
(Top View)
BIAS SPRING
TAPE
(C) BIAS SPRING (PUNCH BLOCK)
(1) Requirement
(A) BIAS SPRING (TAPE CHUTE)
Requirement
Clutch disengaged and tape threaded
through punch assembly, it should
require
~---Min 1-1/4 oz---Max 2-1/4 oz
to just move spring away from tape.
To Adjust
Bend spring.
Note: In order to check this spring tension
Oii'Units equipped with backspace mechanism,
it is necessary to remove several parts. It
should not be checked unless there is
reason to believe that requirements cannot
be met.
With tape removed from punch block, bias
spring should rest against clearance slot in block
in a symmetrical manner. ------------.....,j~
(2) Requirement
With tape in punch block and perforator operating
under power, spring should not distort edge of tape.
To Adjust
Bend spring and positioo it with its mounUng screw
loosened. Tighten screw.
Page 40
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