Teletype 28 - Page 55

2. 45 Typing Mechanism (continued)
(D)
LETTERS ARM ASSEMBLY SPRING
Requirement
With arm assemblies in figures position
ISS 8, SECTION 573-118-700TC
LETTERS
ARM ASSEMBLY
SPRING
Min 1-1/2 oz---Max 3-1/2 oz ! - I
to pull spring to installed length.
(A) LETTERS- FIGURES YIELD ARMS
(Continued from previous page)
(2) To Check
Manually place arm assemblies in
figures position. Hold letters-figures
(Front View)
bellcrank against right edge of
stop post.------------......1
(E) LETTERS EXTENSION ARM SPRING·
Requirement
r-----Min some---Max 0. 006 inch*
clearance between bellcrank and
figures extension arm.
Requirement
With arm assemblies in figures posi-
tion and letters extension arm manually
held in position
LETTERS-
FIGURES
BELLCRANK
(Front View)
To Adjust
Min 5 oz---Max 8 OZ------,
to pull spring to installed length.
PRY POINT
LETTERS EXTENSION
ARM SPRING
*Note: Removal of function blades will
facilitate measuring clearance.
Loosen clamp screws in bo~ letters-figures yield arms.
Place arm assemblies in letters- position. Hold letters-figures
bellcrank against left side of stop post, and by means of pry
point, position letters yield arm to meet clearance requirement
under (A) (1) figure on previous page). Tighten letters yield arm
clamp screw. Place arm assemblies in figures position and by
means of pry point.position figures yield arm to meet require-
ment under (2) above. Tighten figures yield arm clamp screw.
CAUTION: ARM ASSEMBLIES MAY CHANGE POSITION DUR-
ING ADJUSTMENT. AS TIGHTENING OF SCREWS MAY
AFFECT ADJUSTMENT, RECHECK REQUIREMENTS.
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