Grizzly G1012 Instruction Manual page 30

If the straightedge will not touch the top and bot-
tom rim of the upper wheel evenly, first determine
if the upper wheel needs to be moved forward or
backward. You can only shim the wheels to come
forward.
• If the front wheel is behind the straightedge
then the front wheel can be shimmed.
• If the front wheel is comes forward from the
plane of the lower wheel, the lower wheel
needs to be shimmed forward, so the
straightedge lines up even with both wheels.
Shimming a wheel:
1.
Adjust the tracking knob so the top wheel is
parallel with the bottom wheel. 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 38.
The distance you measured with the ruler is
the distance the wheel must be corrected.
Figure 38. Measuring wheel difference.
2.
Remove the blade from the saw, then
remove the securing nut and the washers
from the wheel that needs to be shimmed.
Take the wheel off.
3.
Electrical washers work well for shimming
because they are offered in a wide range of
thicknesses. Measure how many you will
need and place them on the mounting shaft.
-28-
4.
Replace the wheel, any remaining washers,
and the securing nut. Tighten the blade as it
will be used during operation before you
check the wheels for being coplanar. Often
the wheels may be coplanar with the blade
loose, then be pulled out of alignment when
it is tightened.
5.
The first time you get the wheels coplanar,
place a mark on each wheel where you held
the straightedge. This assures repeated
accuracy every time you adjust your wheels.
When wheels are properly coplanar, the blade
may not be centered on the crown of the wheel,
but it will be balanced. See Figure 39 to better
understand coplanarity.
Figure 39. Coplanar diagram.
G1012 18" Bandsaw