Bell System Practices Plant Series Adjustments page 127

4. 06
Main Shaft and Trip Shaft Mechanisms (Cont.)
..
SPACING CLUTCH
TRIP LEVER
SHOE LEV ER
M AIN SHAFT
SP ACING CLUTCH TRIP LEVER SP RING
TRIP LEVER AR M
SP ACING CLUTCH
(LEFT SIDE VIEW)
REQUIREMENT
SPACING AND TYPE BOX CLUTCHES DISENGAGED
TRIP LEVER ARM IN UPWARD POSITION
FOR UNITS WITHOUT U-SHAPED LINE
FEED CLUTCH TRIP LEVER:
SPACING CLUTCH TRIP LEVER SHOULD
BE FLUSH OR UNDERFLUSH BY
THICKNESS OF SHOE LEVER WITH
OUTER SURFACE OF SHOE LEVER.
FOR UNITS WITH U-SHAPED LINE
FEED CLUTCH TRIP LEVER:
SPACING CLUTCH TRIP LEVER SHOULD
ENGAGE SHOE LEVER BY FULL
THICKNESS OF SHOE LEVER
CHECK AT STOP LUG WITH LEAST BITE
TO ADJUST
USE ADJUSTING SCREW TO POSITION
SPACING CLUTCH TRIP ARM.
CLUTCH TRIP LEVER SPRING
REQUIREMENT
CLUTCH ENGAGED AND ROTATED UNTIL
TRIP LEVER RESTS ON STOP LUG
CL UTCH
SPACING
LINE FEED
TYPE BOX
TO MOVE LEVER AWAY FROM
STOP LUG.
(REAR VIEW)
ISS 7, SECTION 573-115-700
o
1/2
o
o
MIN. MAX.
ozs. ozs.
11 16
9 ozs. 12 ozs.
5 ozs.
ozs.
7-1/4
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