3
LOOSEN SCREW IN ADJUSTING NUT AND TURN
1
CONNECT A 28-VOLT DC POWER SUPPLY TO
ADJUSTING NUT CLOCKWISE TO INCREASE
MAGNETIC CLUTCH. TURN ON POWER TO
AIR GAP, OR COUNTERCLOCKWISE TO
ACTUATE CLUTCH.
DECREASE AIR GAP. FIVE DEGREES OF NUT
TRAVEL
WILL
CHANGE
AIR
GAP
2
WITH CLUTCH ACTUATED, USE A FEELER
APPROXIMATELY 0.001 .
GAGE TO CHECK AIR GAP BETWEEN MAGNET
AND CLUTCH AT 90 DEGREE INTERVALS
4
ADJUST AIR GAP UNTIL FOUR FEELER GAGE
AROUND CIRCUMFERENCE. THE AVERAGE OF
READINGS AVERAGE 0.018 WITH CLUTCH
THE FOUR FEELER GAGE READINGS SHOULD
ACTUATED. TIGHTEN SCREW.
N 0.018. IF THIS AVERAGE IS OBTAINED, THE
CLUTCH IS PROPERLY ADJUSTED. IF NOT,
5
DISCONNECT
POWER
SUPPLY
FROM
PROCEED TO STEP 3.
MAGNETIC CLUTCH.
AT 19711
Figure 4-14. Adjustment of magnetic clutch.
4-27