AT&T Bell System Plant Adjustment Procedure page 4

SECTION 032-714-701
TEST READJUST
GRAMS GRAMS
GRAMS GRAMS
MIN MAX MIN
MAX
(a) 130 200 140 200
(b)
100 115
(c) 105 200 115 170
I ..:I\
65
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.1.-'<v
IV .L.l.u
Use the No. 79C gauge.
Note: Reference shall be made to the re-
quirement table for requirements for the
particular key.
2.05
Plunger Release
(a) Any plunger locked in the intermediate
or in the locked position shall release
when any other plunger is depressed to the
intermediate or locked position.
(b) When any nonlocking plunger is operated,
the locking plunger immediately in front
of it shall be released, if it is in the locked
position.
(c) The locking plunger shall lock reliably
and shall release when the nonlocking
plunger is depressed to the end of its stroke.
(d) It shall be possible to depress the locking
plunger an appreciable amount after it
has engaged with the roller of the slide plate
in the locked position.
Gauge by eye.
*2.06
Contact Alignment: Fig. 2(A) - The
contacts shall line up so that the point
of contact falls wholly within the boundary of
the opposing contact at all times during contact.
Gauge by eye.
Fig. 2 - Contact Alignment
*2.07
Contact Separation:
Fig. 3(A)
(a) Unless otherwise specified, the separation
between any pair of contacts normally
open, or between a:riy pair of contacts that are
Page 4
opened when the key is operated, shall be
Test
-Min 0.014"
Readjust- Min 0.016"
Gauge by eye.
Key
Sutton---------~~~
Plunger
Guide
---------+~~
Fig. 3- 512-type Key
(b) On the "W" contacts of the spring com-
bination shown in Fig. 4 and all the con-
tacts of the spring combination shown in Fig.
5, there shall be a separation of
Test -Min 0.010"
Readjust- Min 0.012"
Gauge by eye.
(c) On make-before-break spring combinations
(continuity) and make-make spring com-
binations, there shall be a separation of
Test - Min 0.010"
Readjust- Min 0.012"
Gauge by eye.
rf ffiJ
lTI
ffi 1
Fig. 4 Fig. 5
Illustrating Contact Separation