AT&T Bell System Plant Series Adjustment Procedure page 2

SECTION 032-721-701
2. RE!(,UIREMl!NTS
Key Top Screw------,
Roller--------~
Plunger
Cone--~~~~~~~~~~~~~~
Pin--~
Slide
Plate
Plunger
Spring--~-~-----~~
Slide
Plate
Operating
Spring
Spring
Assembly
Mounting
Strip--_,
Fig. 1
Fig. 2
PLUNGER TYPl!: KEYS
2.01
__j
2.02
2.04
*2.06
Cleaniilf
(a) Coniacts shall be cleaned in accord-
ance with the section covering clean-
ing procedures for key contacts.
(b) Other parts shall be cleaned in
accordance with approved procedures.
Plu~er Movement The plungers shall
wor freely in their oeerings end when
released unrestrained shall return to
their normal position with a snap.
Gauge by eye Pnd reel.
Slide Plate Operating sari~ Tension
The pressure of the sll e
~ate
operat-
ing S"pring against the pin in the allele
plate with all the plungers in tlle
nor-
mal position shall be:
Test - Min. 130 grams,
- - Max. 200 grams
Readjust - Min. 140
grams~
Max. 200 grams
Use the No.
79-C
gauge.
Pl~er
Release
(aAny plunger locked in ta. operatecl
position shall release wlen any
other plunger is depressed to the
operated position.
(b) The locking plunger shall lock n ..
liebly and shall re~ease wben ~
non-locking plunger is 4aprea..S tb
the limit of its stroke.
Contact
Ali~ent
'l'he
contao~a
shall
Ilne up so
~t
the point ·of contect
falls wholly within the o1rcumfe~
ot
the opposing contact clho.
Qeuge
Itt
eye.
Contact Setarat1on unless otberw1ae
specified he separation betw.eea IID'T
pair of contacts normally ·opea
or
be-
tween any patr of contacts 'that are
opened who *be ke7 is operated shall be:
Tea\ -
~n
••
01~·
~uat
- Min.
.ol&•
Gauge
7 .,-..
~r~learance
l8)Wi'e
shill be a clearance between
1M sprin811 cleeigned never to make
oontaot and between any spring aDd
the trame, whether in the operated
or unoperatecl position
ot
the key of:
Teat - Uln ••
ol•"
!ii!Jua\ - Min •• 016"
Qe.uge
by .,...
'------(b) With the plun88r in the normal posi-
tion there shall be a clearaoe be-
tween the plunser spring and pluQSer
1• at least one position
ot
tbe
plunger as the plunger la rotated.