Shimming Upper Wheel
1.DISCONNECT BANDSAW FROM POWER!
2.Adjust the tracking knob so the top wheel is parallel with the bottom wheel.
3.With the straightedge touching both points of the wheel that does not need to be adjusted, measure the distance away from the incor- rect wheel with a fine ruler (see Figure 50). The distance measured with the ruler is the distance the wheel must be corrected.
Figure 50. Measuring wheel difference.
4.Remove the blade from the saw, then remove the wheel that needs to be shimmed.
5.Determine how many shim washers you need and place them on the wheel shaft.
6.Replace the wheel, the original washers, and the securing nut.
7.Tighten the blade, then check the wheels. (Coplanar wheels may pull out of alignment when the blade is tightened.)
8.When the wheels are coplanar, place a mark on each wheel where you held the straight- edge. This assures repeated accuracy every time you adjust your wheels.
Note: When wheels are properly coplanar, the blade may not be centered on the crown of the wheel, but it will be balanced. See Figure 51 to better understand coplanarity.
G0621 Wood/Metal Bandsaw
Figure 51. Coplanar diagram.
Adjusting Lower Wheel
Only do this procedure if you cannot make the wheels coplaner with the tracking knob or by shimming the upper wheel. Make sure the upper wheel is adjusted as close as possible to being coplanar with the lower wheel before beginning. Do this procedure with the blade fully tensioned.
To adjust the lower wheel:
1.DISCONNECT BANDSAW FROM POWER!
2.Loosen the four hex bolts on the lower wheel adjustment hub (Figure 52). These secure the wheel adjustment sleeves.
|
| Wheel |
Hex Bolt |
| Adjustment |
|
| Sleeve |
|
