Bell System Practices Plant Series Adjustments page 27

2. 18 Sensing Mechanism Springs
LATCH LEVER
CONTACT SLIDE
CONTACT SLIDE
PUSH LEVER
PUSH LEVER
SPRING
ISS 3, SECTION 573-127-700
(B) LATCHLEVER SPRING
TO CHECK
SELECT BLANK COMBINATION.
SING CLUTCH AND ROTATE SHAFT TO STOP
POSITION. APPLY SCALE AT RIGHT ANGLE
TO TOP OF LATCH LEVER.
REQUIREMENT
MIN. 1 OZ.
MAX. 3 OZS.
TO START LATCHLEVER MOVING.
TAKE CARE NOT TO DAMAGE PUSHUVER
SPRINGS IN CHECKING REQUIREMENT.
(A) PUSH LEVER SPRING
TO CHECK
TRIP CLUTCH AND ROTATE SHAFT UNTIL
SENSING PINS ARE IN UPP ERMOST POSI­
TION. APPLY SCALE AT RIGHT ANGLE TO
EXTREME LOWER END OF PUSHLEVER (SEN­
SING PUSH LEVERS. ONLY).
REQUIREMENT
MIN. 1 OZ.
MAX. 2 OZS.
TO START PUSHLEVER MOVING.
BE SURE CONTACT SLIDES DO NOT INTER­
FERE WITH MOVEMENT OF PUSHLEVERS.
TRIP S EN­
NOTE 1
NOTE 2
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