Teletype 28 - Page 173

ISS 8, SECTION 573-118-700TC
4.18 Noninterfering BLANK Tape Feed Out Mechanism (continued)
CENTER
CONTACT : t•l
SPRING
(A) CONTACT
LEVER
To Check
Fully latch release arm on release
arm latch. Hold center contact spring
away from contact lever. Allow
contact lever extension to rest against
latch. Measure clearance between
feed out bracket and contact lever at
top of lever.
Requirement
• l• -+-----------------Min some---Max 0.020 inch
(Front View)
CONTACT
LEVER
FEED OUT
BRACKET
CONTACT
LEVER
EXTENSION
RELEASE ARM
LATCH
To Adjust
Position contact lever with clamp screw
loosened. (For position of clamp screw
see illustra!:ion below.) Tighten clamp
screw.
(B) CONTACTING MOUNTING BRACKET
Requirement
With release arm unlatched
Min 0.010 inch---Max 0.040 inch
between contact lever and center
contact spring.
To Adjust
Position mounting bracket with mount-
ing screw and nut loosened. Tighten
screw and nut. Note: By means of test lamp, check
continuity of contact with contact
lever in each position.
CONTACT MOUNTING
(C) CONTACT
LEVER SPRING
Requirement .
Min
3 oz---Max 6 oz ----------,
to pull to installed length.
(D) CONTACT PULSE CLOSURE
Note: Preceding adjustments should be
made prior to this adjustment
External circuitry may require a pulse at
end of feed out operation. To obtain this
condition, remove clamp screw and adjust-
ing bracket and hook contact lever spring
in tapped hole. Contacts will then be open
or closed, depending on choice of contact,
except for short period at end of feed out
operation.
BRACKET
(Rear View)
CONTACT
LEVER--M
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