Belt Tracking Adjustments - Grizzly G0677 Owner's Manual

Belt Tracking
Adjustments
The belt tracking adjustments have been per-
formed at the factory and should require no fur-
ther attention. However, we recommend that you
verify the settings.
When correctly adjusted, the belt should take
about the same amount of time to travel from one
side of the upper roller to the other .
If you notice that the belt is tearing, is tracking
toward one side more than the other, or contacting
a limit switch and causing the emergency brake
to stop the machine, belt tracking needs to be
adjusted.
Tools Needed:
Wrench 9mm ..................................................... 1
Pencil or Pen ..................................................... 1
To check and adjust belt tracking:
1. Be sure the sanding belt is properly installed
and the belt is tensioned, then DISCONNECT
THE PLANER/SANDER FROM THE POWER
SOURCE AND REMOVE AIR PRESSURE!
2. Open the upper left access door.
3. Visually check that the belt tracking adjust-
ment knob (Figure 50) is centered, as shown
in Figure 51.
Figure 50. Oscillation adjustment knob.
-44-
Qty
Oscillation
Adjustment
Knob
Left Centered
Figure 51. Belt tracking knob positions.
—If the knob is not centered, turn the knob
counterclockwise to loosen it, move it to
the center position—between 11 and 1
o'clock—as viewed straight on, then tight-
en the knob.
4. Open the upper right access door, loosen the
lock nuts on the airflow adjustment knob and
the oscillation speed control knob.
Airflow
Adjustment
Figure 52. Airflow and oscillation speed control
knob.
5.
Turn both knobs counterclockwise all the
way.
6.
Make a reference mark using a pencil or pen
at the 12:00 position, turn each knob clock-
wise 3 ⁄ turns, then tighten the lock nuts.
1
2
This will reset the knobs to the factory setting
and ensure there is an adequate amount of
airflow through the air fork air jet so the upper
roller pivots and the belt oscillates.
7. Connect the machine to power and air, and
while pressing the upper left access door
safety switch in, turn the sanding belt ON.
8. Observe the oscillation of the sanding belt. It
should take the belt approximately the same
amount of time to oscillate from one side to
the other.
—If the belt oscillates to the left and right the
same amount of time, no further adjust-
ments are needed.
Right
Speed
Control
G0677 24" Planer/Sander