Adjusting Blade Support Bearings - Grizzly G0803Z Owner's Manual

The Deflection Method
The deflection method is much more subjective
than the flutter method. Each blade will deflect
differently and every user will determine what
"moderate pressure" means. The following are
general guidelines for tensioning the blade with
this method.
To tension bandsaw blade using deflection
method:
1.
DISCONNECT MACHINE FROM POWER!
2.
Make sure blade is properly tracking as
instructed in Blade Tracking section on
Page 17.
3.
Raise guide post all the way and move upper
and lower guide bearings away from blade.
4.
Engage blade tension quick-release lever to
apply tension to blade.
5.
Using moderate pressure, push center of the
blade sideways with one finger.
—I f the blade deflects approximately
properly tensioned. Proceed to Step 6.
— If the blade deflects less than
tensioned. Turn the blade tensioning knob
counterclockwise two full turns and repeat
Step 5.
— If the blade deflects
is not properly tensioned. Apply tension to
the blade incrementally and repeat Step 5
until properly tensioned.
6. Adjust blade guides as described in
Adjusting Blade Support Bearings and
Adjusting Blade Guide Bearings on
Pages This Page–23.
-22-
⁄ ", it is
1
4
⁄ ", it is over-
1
4
⁄ " or more, the blade
1
4
Adjusting Blade
Support Bearings
The support bearings are positioned behind the
blade near the blade guides and prevent the blade
from pushing backward during cutting operations.
Proper adjustment of the support bearings helps
you make accurate cuts and prevents the blade
teeth from coming in contact with the blade guides
while cutting. If this happens the blade "tooth
set" can be ruined, which will greatly reduce the
blade's ability to make good cuts.
There are support bearings on the upper and
lower blade guide assemblies. Both adjust in the
same manner. The following instructions refer
to the upper support bearings. To access the
lower support bearing, you must open the lower
wheel cover (see Identification on Page 3 for
reference).
Important: To ensure best results while cutting,
make sure the blade is tracking and tensioned
correctly before performing this procedure.
Item(s) Needed
Hex Wrench 4mm .............................................. 1
Feeler Gauge 0.016" .......................................... 1
To adjust support bearings:
1. DISCONNECT MACHINE FROM POWER!
2. Open blade cover and loosen support bear-
ing adjustment cap screw (see Figure 23).
Support
Bearing
Blade
Cover
Figure 23. Upper support bearing assembly and
controls.
Model G0803Z (Mfd. Since 12/18)
Qty
Support Bearing
Adjustment Cap Screw