Grizzly G9979 owner manual

—If the deflection is correct and the V-belts are in good condition, no further action is required. Replace the rear motor access panel.

—If the deflection is more than or less than 1⁄4" or the V-belts need to be replaced, then continue to Step 5.

5.Use a 12mm wrench to loosen the four motor mount hex bolts (see Figure 49).

wheel alignment

Wheel Alignment

When the wheels are coplanar (in the same plane), the bandsaw cuts straighter, with much less vibration, heat, and blade wear because the blade is continuously balanced on the wheels. Refer to Figure 50 to better understand this arrangement.

Motor Mount Hex Bolts

Figure 49. Motor mount hex bolts.

Coplanar

Coplanarity Gauge Coplanarity Gauge Contacts Top And Bottom of Both Wheels

Not Coplanar

6.If it is necessary to replace the V-belts, slide the motor toward the wheel pulley to relieve the tension, then replace the V-belts with a new matched set.

7.Position the motor to adjust the V-belt tension until they have the correct deflection, then re- tighten the hex bolts.

Not Coplanar	Parallel,
	Not Coplanar

	Figure 50. Wheel coplanar examples.
-42-	G8144Z/G8145Z/G8146Z
	(Manufactured Since 6/11)