AT&T Bell System Plant Series Adjustment Procedure

BELL SYSTEM PRACTICES
Plant Series
SECTION 032-723-701
Issue 5, March 1971
AT&TCo Standard
KEYS
545, 575, 591, A28, A34, A36, B22, B23,
B25, B26, E6, G3, G4, AND GS TYPES
REQUIREMENTS AND ADJUSTING PROCEDURES
1. GENERAL
1.01
This section covers 545-, 575-, 591-, A28-,
A34-, A36-, B22-, B23-, B25-, B26-, E6-, G3-,
G4-, and G5-type keys.
1.02
This section is reissued to:
einclude lubrication instructions.
eAdd a new Fig. 1 which illustrates an
improved support for the plunger rod assembly
used on the 545-, 575-, 591-, A28-, A34-,
A36-, B23-, B26-, and G3-type keys.
eAdd No. 3 lubricatingcompound,KS-8496 to
List of Materials.
1.03
Reference shall be made to Section 020-010-711
for additional information necessary for the
proper application of the requirements listed herein.
*
1.04
Asterisk: Requirements are marked with
an asterisk (*) when to check for them
would necessitate the dismantling or dismounting
of apparatus or would affect the adjustment involved
or other adjustments. No check need be made
for these requirements unless the apparatus or
part is made accessible for other reasons or its
performance indicates that such a check is advisable.
1.05
The normal (unoperated) position of a
plungeris that position in which the shoulder
of the plunger rests against the buffer plates with
the normally open contacts open and the normally
closed contacts closed.
1.06
The operated position of a plunger is that
position in which the plunger is depressed
to the limit of its stroke with the normally closed
contacts open and the normally open contacts
closed.
1.07
•An improved support for the plunger rod
assembly is illustrated in Fig.
l.•
SUPPORT
BRACKET
Fig. 14New Plunger Rod Support Assembly•
© American Telephone and Telegraph Company, 1971
Printed in U.S.A.
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