Bell System Practices Plant Series Adjustments page 118

SECTION 573-115-700
Letters - Figures Codebar Shift Magnet Mechanism
3. 42
( )
A SHIFT MAGNET YOKE
REQUIREMENT
CLEARANCE BETWEEN ARMATURE AND END OF HEELPIECE SHOULD BE
MIN. SOME ---MAX. 0.003 INCH
TO CHECK
MAGNET ARMATURE HELD AGAINST CORE.
TO ADJUST
POSJTJON YOKE WITH ITS CLAMP SCREW LOOSENED.
LEFT VIEW
)
( SHIFT MAGNET ARMATURE ---- -- -1
B
REQUIREMENT
1. CLEARANCE BETWEEN ARMATURE AND
TRANSFER LEVER SHOULD BE
MIN. SOME ---MAX. 0.005 INCH
TO CHECK
MAGNET ARMATURE ATTRACTED. SHIFT
CODE BAR IN FULL MARKING POSITION.
TO ADJUST
POSITION MAGNET FORWARD OR BACK­
WARD WITH BRACKET MOUNTING SCREWS
LOOSENED.
CLEARANCE BETWEEN ARMATURE AND
2.
TRANSFER LEVER SHOULD BE
MIN. SOME ---MAX. 0.010 INCH
TO CHECK
MAGNET ARMATURE UNOPERATED. SHIFT
CODE BAR IN FULL SPACING POSITION.
TO ADJUST
POSITION ARMATURE BACKSTOP SCREW
WITH LOCK NUT LOOSENED.
PILOT PIN
Page 118
.
FRONT VIEW
CHECK CLEARANCE ACROSS END OF HEELPIECE
NOTE: KEEP POLE FACE FREE
ARMATURE
ARMATURE BACKSTOP SCREW
SHIFT CODE BAR
(
) SHIFT MAGNET ARMATURE RETURN SPRING
C
REQUIREMENT
MIN. 1 OZ. - - - MAX. 3 OZS.
TO PULL SPRING TO INSTALLED LENGTH
(
)
D SHIFT CODE BAR RETURN SPRING
REQUtREMENT
MIN. 3 OZS.
TO START CODE BAR MOVING
TO CHECK
TRIP TYPE BOX CLUTCH, ROTATE MAIN
SHAFT UNTIL PRINTING TRACK IS IN
LOWEST POSITION
OF OIL AND GREASE.
---MAX. 7 OZS.
LTRS -FIGS SHIFT CODE
BAR EXTENSION POST