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Figure 37. Belt deflection (1").
Figure 36. Front panel and mounting screws.
Figure 38. Motor mounting nuts.
V-Belt Tension
The sanding drums are driven by two heavy-duty
V-belts. After drum adjustments and normal
operation, the belts may need adjustment. The belt
looseness or deflection must be approximately 1".
To inspect / adjust the V-belts, do these steps:
1. Unplug the Double Drum Sander.
2. Remove eight front panel mounting screws
and remove the panel. See Figure 36.
3. At the halfway point between the drum
pulley and the motor pulley, push on both
belts with moderate finger pressure. The
looseness or deflection must be
approximately 1". See Figure 37.
4. Grab the belts one at a time, twist them, and
use a flashlight to inspect the inside and
outside of the belt. If you see deep cracks,
fraying, chunks missing, or the belt is brittle
and glazed; replace both belts.
5. Loosen the motor mounting nuts, and slide
the motor on the mounting plate to adjust
the belt. See Figure 38.
6. Tighten the motor mounting nuts, recheck
and readjust the belts as necessary.
7. Reinstall the front panel.
Make sure you inspect the V-belts correctly
when adjusting the belts. Replace both belts
even if only one is worn. Otherwise, one
belt could slip and break, damaging the
sander and injuring you and bystanders!
Keep your drum sander
unplugged during all
assembly, maintenance,
and adjustment tasks.
Ignoring this warning can
cause serious personal
injury to you or others!
Front Panel
Mounting Screw
Motor
Mounting Nuts
1"
ADJUSTMENTS