Teletype 28 - Page 89

ISS 8, SECTION 573-118-700TC
3. 09 Auxiliary Timing Contact Mechanisms (Single Contact and Double Contact Types)
Note 1: There are two types of timing contact assemblies, single and double.
Single
contact assemblies have a front contact only, no rear contact. If unit
is equipped with a double contact assembly, the following adjustments apply to
both front and rear contacts.
Note 2: In case of single contal.!t assembly, make certain contact bracket
mounting screws are centrally located in elongated slots, and proceed to next
adjustment.
CONTACT
BRACKET
CONTACT •{ •I
BACKSTOP
CONTACT BRACKET
MOUNTJNG SCREWS
L.-.1--J
(Front View)
'·~·I'
~~. ?
i~ l
\· .
:~ -
,,~
,,
;;, fl
CONTACT MOUNTING acREWS
(A) CONTACT BACKSTOP (Double Contact
Assembly)
Requirement
Swinger of each contact held against its
backstop by its operating bail and
spring, and contact bracket mounting
screws centrally located in elongated
slots, clearance between operating
bails
,....------Min 0. 040 inch---Max 0. 045 inch
(on units equipped with one-cycle cams)
at point of least clearance.
To Adjust
Bend front backstop leg.
,_---REAR OPERATING BAIL
FRONT OPERATING BAIL
(B) CONTACT ALIGNMENT
(1)
Requirement
1-------------When parts are in engagement
operating bail centrally located
with respect to swinger.
(2) Requirement
.__-----------Mating contact points aligned.
To Adjust
Position contact springs with contact
mounting screws loosened. Tighten
screws.
Page 89