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G9983 15" Open-End Wide-Belt Sander -25-
SECTION 8: SERVICE ADJUSTMENTS
Keep loose clothing out
of the way of machinery
and keep hair pulled
back.
Wear safety glasses dur-
ing the entire assembly
process. Failure to com-
ply may result in serious
personal injury.
Disconnect power to the
machine when perform-
ing any maintenance or
assembly. Failure to do
this may result in serious
personal injury.
Oscillation Timing
The first step in adjusting the oscillation is timing
the side to side movement the belt makes when
oscillating. The belt should take the same amount
of time to travel to one side as it did the other.
Keep your hands clear of the sanding belt
when making the adjustments in this step.
The sandpaper is designed to remove a lot of
material quickly whether it is wood or skin!
To time the oscillation movement:
1. Open both access doors to the upper part of
the machine so you can view the belt move-
ment. The sanding belt should also be on the
rollers and tightened. Turn the sanding belt
ON.
2. Count the amount of time it takes the belt to
move from one side to the other. If the oscil-
lation balance is correct, the belt will move
from one side to the other in even intervals.
If the balance is not correct, the belt may
move to one side very quickly, then very
slowly to the other.
3. If the belt immediately moves too far and
shuts off the machine, then loosen the oscil-
lation timing control knob shown in Figure 20
and move it toward the front or rear of the
machine to rotate the eccentric.
4. Loosen the belt tension, rebalance the sand-
ing belt and retighten the belt tension.
Repeat steps 2 and 3.