Model G0449/G0450 (Mfd. Since 8/13)
-37-
Figure 44. V-belt tension controls.
Tighten
V-Belts
Loosen
V-Belts
To adjust V-belt tension:
1. DISCONNECT POWER TO SANDER!
2. Remove the table height handwheel and
open the pulley cover.
3. Using a 19mm wrench, turn the motor mount
nuts in the direction shown in
Figure 44 to
loosen or tighten the V-belts.
4. Close the pulley cover and reinstall the
handwheel.
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-belts until you can roll them off
the pulleys, replacing them with a MATCHED set,
then re-tensioning them.
Note: A matched set means both the V-belts
are the same size and also have the same serial
number.
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
screw that secures the pulley to the shaft, sliding
the pulley in/out, and retightening the set screw to
lock the pulley in place.
To align the pulleys:
1. DISCONNECT POWER TO SANDER!
2. Remove the table height handwheel, open
the pulley cover, and remove the V-belts.
3. Place a straightedge across the face of
the motor pulley and the front drum pulley
to check the alignment. The straightedge
should sit evenly on the top and bottom part
of both pulleys, as shown in
Figure 45.
4. Repeat Step 3 with the straightedge placed
against the motor pulley and rear drum pul-
ley.
5. Loosen the pulleys and adjust them as nec-
essary until they are all coplanar with each
other.
6. Reinstall the V-belts, close the pulley cover
and reinstall the handwheel.
Figure 45. Checking pulley alignment with a
straightedge.
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