Grizzly G0459 owner manual Removal/Replacement, Pulley Alignment, To adjust V-belt tension

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.

		Tighten
		V-Belts
Motor
Plate	Loosen
Bracket
	V-Belts	Bolts

Figure 25. V-belt tension controls.

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.

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.

5.Adjust the pulleys as necessary until they are all coplanar with each other.

6.Reinstall the side panel and handle.

G0459 12" Drum Sander -27-