Wheel Alignment
For proper operation of the bandsaw it is impor- tant that the upper and lower wheels be aligned so they are in the same plane. See Figure 5 to understand the relationship between the wheels.
Figure 5. Wheel alignment conditions.
On the G7211/7212 it is not possible to lay a straightedge across the two wheels to check coplanarity and parallelism because of the arrangement of the wheels in the cabinet. The wheel relationship can be checked by clamping two blocks of exactly the same size (must be at least 2" high to extend beyond the cabinet) and squareness to each wheel (use the large holes in the wheels for the clamp), then use a straightedge to check the wheel position. It will be necessary to remove the fence and the table to perform this check.
The adjustment knobs on the upper wheel (See Figure 6) can be used to correct for deviation in parallelism between the two wheels. Although this has been set at the factory, it is a good idea to check it occasionally to assure proper operation of your bandsaw. Loosen the check nuts and adjust as necessary by turning one knob in and the other knob about the same amount. Adjust in small increments and check the measurement between the wheels until the wheels are in align- ment.
Adjusting Knobs
Figure 6. Wheel alignment adjusting knobs.
If the wheels are not coplanar, the bearing mount on the lower wheel can be adjusted to move the wheel position in or out, or the wheel can be shimmed on its shaft. This is a major service pro- cedure, however, and should be undertaken very carefully. Normally the positioning of the wheels will not change as long as the saw is properly cared for and is not dropped or tipped onto its back or side. Contact Customer Service for more information on wheel alignment if you are experi- encing difficulty.
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| G7211/7212 24" Bandsaw | ||