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G0459 12" Drum Sander
-27-
Removal/Replacement
Replace the V-belt if you notice fraying, cracking,
glazing, or any other damage. A worn/damaged
V-belt will not provide optimum power transmis
-
sion from the motor to the drums.
V-belt removal and replacement is simply a matter
of loosening the V-belt, rolling it off of the pulleys,
replacing it, and re-tensioning it.
To adjust V-belt tension:
1. DISCONNECT POWER TO THE SANDER!
2. Open the rear panel.
3. Loosen the motor mount bolts and raise or
lower the motor bracket, as shown in
Figure
25, to loosen or tighten the V-belt.
4. Tighten the motor mount bolts and replace
the rear panel.
Figure 25. V-belt tension controls.
Loosen
V-Belts
Pulley Alignment
Pulley alignment is another important factor in
power transmission and belt life. The pulleys
should be parallel to each other and in the same
plane (coplaner) for optimum performance.
Each pulley can be adjusted by loosening the set
screws that secure the pulley to the shaft, sliding
the pulley in/out, and retightening the set screws
to lock the pulley in place.
To align the pulleys:
1. DISCONNECT POWER TO THE SANDER!
2. Remove the right handle and side panel.
3. Remove the V-belt.
4. Place a straightedge across the face of the
motor pulley and drum pulley to check the
alignment. The straightedge should sit evenly
on the top and bottom part of both pulleys, as
shown in
Figure 26.
Figure 26. Checking pulley alignment with a
straightedge.
Motor
Plate
Bracket
Tighten
V-Belts
Bolts
5. Adjust the pulleys as necessary until they are
all coplanar with each other.
6. Reinstall the side panel and handle.