AT&T Bell System Plant Adjustment Procedure page 8

SECTION 032-714-701
Key
Buttons----+fl":-,
Helical
Spring----+-!
Plunger
Guide-----+'~"
Spring
Assembly
Bracket-----
Fig. 15 - 497 -type Key
Fig. 16- 503-type Key
(b)
A
pressure of
Test - 800 grams
Readjust - 90Q grams
r - - - - ( A )
applied on the plunger shall not cause any
contacts
to
operate.
Use the No. 79B gauge.
(c) Requirement (b) shall apply to coin con-
trol units only.
Page 8
Fig. 17- C2-type Key
(d) Requirement (b) shall not apply to the
Nos. AllB, AllL, A 11M, AllAG, A13C,
A13D, A13F, A13G, A2C, A2D, A2G, A2N,
A2Y, A2AB, A2AC, A2AE, A2AF, A2AG,
A2AH, A2AJ, A2AK, A2AL, A2AM, A2AN,
A2AP, A2AR, A2AS, A2AT, A2BB, A2BC,
A2BF, A2BG, A2BH, A2BJ, A2BK, A2BL,
A2BM, A2BW, A2BY, A2CE, A2CS, and
A2DA keys.
(e) Requirement (b) shall apply to the non-
locking units of the 503- and 6008-type
keys and to the A6N key.
(f) A pressure of
Test - 200 grams
Readjust - 225 grams
shall not move a plunger from its normal
position.
Use the No. 79B gauge.
Lever-type Keys
*2.15
Cleaning
(a) Contacts shall be cleaned, when neces-
sary, in accordance with approved pro-
cedures.
(b) Other parts shall be cleaned, when nec-
essary, in accordance with approved pro-
cedures.