AT&T Bell System Plant Series Adjustment Procedure page 6

SECTION 032-721-701
3. A"!J.TUSTTIW
"PROCEDURES
TOOLS
Code No.
35
205
207
209
210
363
KS-2348
KS-5015
GAUGES
58-B (or the
replaced
68)
?9-C (or the
replaced
?9-A)
MATERIALS
KS-2423
KS-6232
KS-7860
PLUNGER TYPE KEYS
Description
Screw-driver - 3 -l/2"
Screw-driver - 30° Offset
Screw-driver - 90° Offset
Wrench - 5/16" Hex. Open
End Offset
Pliers
Spring Adjuster
Cord Repair Screw-driver
Duck-bill Pliers
Bell System Cabinet Screw-
driver- 3-l/2" per A.T.&T.
Co. Drawing 46-X-40
Bell System P-Long Nose
Fliers- 5-1/2" per A.T.&T.
co. Drawing 45-X-55
?0-0-?0 Gram Gauge
0-200 Gram Push-Pull
Tension Gauge
Cloth
Oil
Petroleum Spirits
Toothpicks, Hardwood, Flat
at one End and Pointed at
the Other.
No. 20 Bare Copper Wire
3,01 CLEANING (Rq,2.01)
Page 6
M-1 Clean the contacts in accordance
with the section covering clean-
ing procedures for cleaning key contacts.
Clean other parts in accorde.nc e with pro-
cedures 3,02, M-5 and M-10, 3.03-3.04,
M-1,
3.
08,
M-4
and
3.11-3
.12, M-1.
3.02 PLUNGER
MOVEMENT
(Ro.2.02)
rt.-1
I f
a plunger binds in the key top
slot, remove thE: key top and ream
out the slot. To remoYe the key top it
will first be necessary to remove the
key buttons.
M-2 Vfuen removing the key button,
loosen the lock nut by turning
it away from the button with the No. 209
wrench. Place 3 or 4 thicknesses of the
KS-2423 cloth over the button, grip it
firmly with the No. 210 pliers, and then
while holding the lock nut with the
}~o.
209 wrench, remove the button. With the
No. 35 screw-driver remove the key top
screws. If the key top is not readily
removable, push it up from the bottom
with the screw-driver.
M-3 Loose or missing screws in the
key top nay allow it to move and
thereby cause thE: plunger rods to bind.
Replace any missing screws and tighten
all loose screws with the No. 35 screw-
drive-r.
M-4
Key buttons, loose or not proper-
ly seated on the plunger rod may,
when the plunger is depressed far enough
allow the plunger springs to slip over
the top of the rubber plunger, and
thereby prevent or delay the release of
the key plunger. If this has occurred,
loosen the mounting screws with the
3-l/2" cabinet screw-driver and then
raise the key above the keyshelf without
unsoldering any form wires. Then pry
the plunger springs apart by hand and
allow the plunger
rn~
to restore to its
normal position. Change any defective
buttons.
M-5 If a plunger rod binds in the key
frame it is probably due to dirt.
Place a few drops or petroleum spirits
in the slot between the plunger rod and
the key frame. Operate the plunger
rod a few times and then wipe the
plunger rod with the KS-2423 cloth.
Repeat this operation until all dirt
has been removed.
r.~-5 I f
the plunger rod binds in the
spring assembly mounting block,
loosen the screws holding the spring
assembly mounting block to the key frame
with the 3-l/2" cabinet screw-driver and
shift the block slightly so as to
eliminate the bind. Then retighten the
block firmly.