Bell System Practices Plant Series Adjustments page 68

573-115-700
SECTION
2. 66
Function Mechanism (Cont.)
STANDARD LUG
NOTE: FOR EARLIER DESIGN SEE PAR.
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FRONT
68
Page
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4.21 AND 4.22
FUN CTIO N CON TAC T SPRI NG
REQUI REMEN T
CON TAC T CLO SED
REAR
MIN.
MAX.
TO OPEN SWITCH CONTACT
NOTE: IF THE SWITCHES ARE REMOVED FROM THE STUNT BOX, THE FOLLOW­
ING REQUIREMENTS APPLY:
(1) PROVIDE AT LEAST 0.006
AND THE VERTICAL PORTION OF THE CONTACT CLIP.
CONTACTS FRONT AND REAR, THIS CLEARANCE APPLIES TO BOTH FRONT
AND REAR. TO OBTAIN THIS CLEARANCE, POSITION THE CONTACT
PLATE BEFORE TIGHTENING THE CONTACT PLATE SCREWS.
MUST BE MADE BEFORE THE FUNCTION LEVER TOUCHES THE TOP PLATE.
ON SWITCHES WITH CONTACTS FRONT AND REAR, CHECK TO SEE THAT
THERE IS A GAP OF 0.008
OVER END OF THE FRONT CONTACT CLIP AND THE BOTTOM OF THE CON­
TACT ARM WHEN THE REAR CONTACT IS CLOSED.
1 OZ.
2 OZS.
INCH CLEARANCE BETWEEN THE CONTACT ARM
TO
0.028 INCH BETWEEN THE FORMED-
IF THE SWITCH HAS
THE CONTACT
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