7. Place the sandpaper between the brush and slip ring
with the abrasive side of the sandpaper against the
brush.
9. Slowly pull the sandpaper from beneath the brush.
8. Place the spring in the middle notch of the retainer.
10. Remove all dust with a suction hose. If suction is
not available, use a maximum air pressure of 30 psi (2
kg/cm2). Do not use metal tips.
11. Check brush tension and adjust if necessary.
12. Install the three rear panels that were removed.
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