Teletype 28 - Page 45

ISS 8, SECTION 573-118-700TC
2.35 Punch Mechanism for Fully Perforated Tape (continued)
Note 1: Adjustments (B), (C) and (D) on this page do not apply to tape printer.
(A) PUNCH SLIDE SPRING
PUNCH PINS
Requirement
LETTERS combination set up and punch
slides in selected position
Min 2-1/4 oz---Max 3-1/4 oz :::::L.- , ,
to start each slide moving. l~_.!--:==:--....:::
'--;;;rO);----'~ "'"
Note 2: On units equipped with backspace mechanism,
it is necessary to remove several parts in order
to check this spring tension. It should not be
checked unless there is good reason to believe that
(Front View)
it does not meet its requirements.
TAPE CHUTE (B) TAPE GUIDE ASSEMBLY SPRING
ASSEMBLY
Requirement
Tape guide assembly should be free to return to rest
against tape guide block.
,-------- Min 16 oz
to pull tape guide assembly away from block.
To Adjust
(Top View}
(C) 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.
0
If spring does riot meet requirement, replace spring.
If tape guide assembly is not free to return, reposition
tape guide assembly mounting post to free tape guide
assembly.
(D) BIAS SPRING (Punch Block)
(
1) Requirement
With tape removed from punch block, bias
spring should rest against clearance slot in
block in a symmetrical manner.-----....,
(2) Requirement
With tape in punch block and reperforator
operating under power, spring should not
distort edge of tape.
To Adjust
Bend spring and position it with its mounting
screw loosened. Tighten screws.
0
0
~BIAS
SPRING
Clllllll JIIIIIU
PUNCH BLOCK
(Top View)
(Left Side View)
Page 45