Lower Wheel; Shimming A Wheel - Grizzly G0817 Owner's Manual

Shimming a Wheel

When the wheels are parallel but not coplanar,
one of the wheels must be shimmed out to bring it
into the same plane as the other wheel.
Tip: Standard washers work well for shimming the
wheel because they can easily be stacked to get
the desired height.
To shim a wheel:
1. DISCONNECT MACHINE FROM POWER!
2. Adjust upper wheel tracking so that it is paral-
lel with lower wheel.
3. With coplanarity gauge touching both rims
of wheel that does not need to be shimmed
out, measure distance away from other wheel
with a fine ruler (see Figure 109). The dis-
tance measured with ruler is distance this
wheel must be shimmed.
Figure 109. Example of measuring the distance
to shim the wheel to be coplanar.
4. Remove blade.
5. Remove wheel to be shimmed. Place as
many shims as necessary to correct gap
measured in Step 3 onto wheel shaft.
6. Re-install and secure wheel.
7. Re-install and properly tension blade.
-68-
8. Perform previous
Alignment procedure, beginning on Page
66, and adjust wheels as necessary make
them parallel and coplanar.
Tip: The first time you get the wheels copla-
nar, place a mark on each wheel where you
held the coplanarity gauge, then use this
position again in the future if you need to
repeat the procedure. This assures repeated
accuracy every time you adjust the wheels.
— If no further adjustments are necessary,
remove blade, re-install table, and then
re-install blade.
— If the lower wheel is tilted in relation to the
upper wheel, proceed to Adjusting Lower
Wheel Shaft Position.
Adjusting Lower Wheel Shaft Position
If the lower wheel is tilted in relation to the upper
wheel, perform the following procedure to make it
coplanar with the upper wheel.
There are four adjustment bolts with hex nuts in
the lower wheel adjustment hub, shown in Figure
110. These adjust the wheel tilt from side to side
and up and down.
Note: If you make a mistake during the follow-
ing procedure, it can be very difficult to correct.
Therefore, it is important to double check wheel
alignment (see Page 66), and troubleshoot all
other possible solutions (see Troubleshooting
on Page 55) prior to adjusting the lower wheel
shaft position.
Figure 110. Location of rear lateral adjustment
components.
Model G0817 (Mfd. Since 05/16)
Checking Wheel

Lower Wheel

Adjustment Hub