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111132_0909 4-7
quality. The newspaper should be cut cleanly without
pinching or tearing. Note the cut quality to determine the
need for clearance adjustment and required backlapping.
NOTE: Test the cut quality for each blade of the reel.
7. Start the backlapping machine. The reel should begin
rotating in the backlapping direction
WARNING: Be sure to stay clear of the cutting unit
and use extreme caution around rotating reels!
8. Be sure to have a qualified mechanic show you how to
do this for the first time before you attempt this on
your own. Using a minimum 16" (40.64cm) long
handled brush, apply backlapping compound to the reel
starting at one end and working toward the other. Never
use a short handled brush. Fig. 4-17
9. Once you have completed the initial backlapping of the
reel, the reel to bedknife clearance may need to be
adjusted. Turn the backlapping machine off, be sure all
moving parts come to a rest, and reset the reel to bedknife
clearance. Once you have reset the reel to bedknife
clearance, repeat steps 8 and 10.
10. Repeat steps 8 thru 11 until you have achieved the
desired results and the reel/bedknife are uniformly
backlapped across the full width of the reel. You will
hear that the reel is making contact all the way across by
the sound when you move the brush across the spinning
reel when applying the compound.
11. Once the cutting unit has been backlapped, the cutting
unit, reel, and bedknife must be completely cleaned and
all lapping compound removed. Do not allow the cutting
unit to be operated in the cutting direction until they are
completely clean and free of lapping compound.
12. With the backlapping machine running in the
backlapping direction at low idle, use a water hose to
remove all lapping compound on the reel, bedknife and
cutting unit assembly components.
IMPORTANT: Do not use high pressure washer when
removing lapping compound.
WARNING: Be sure to stay clear of the cutting unit
and use extreme caution around the rotating reel!
13. After the unit is completely clean, turn off the
backlapping machine.
14. Re-adjust and/or check the reel to bedknife clearance to
determine that the reel is cutting properly.
15. Remove the backlapping machine and reinstall the reel
shaft cap.
Fig. 4-15
Fig. 4-16
Reel shaft cap
Reel blade shaft
bolt head
Fig. 4-17
Bedknife
Reel
Brush