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G5049Z Combination Sander -11-
3. Tighten hex bolt and run the sander to adjust
the tracking if necessary.
4. Try aggressively sanding a piece of scrap
wood. If the tracking is not significantly
affected and the belt does not slip on the
drum, your belt tension is correct.
Belt Tensioning
Correct belt tension will insure that your sander
functions properly. Too little tension will allow the
belt to slip and may cause the sander to track
erratically. Too much will cause the drive drum to
creep on the drive shaft and possibly cause pre-
mature bearing failure. It is impossible to describe
ideal belt tension. A good rule of thumb is less
tension is better than too much. If the belt sounds
like a drum when plucked, your tension is proba-
bly set too tight. If your belt does not track and
slips under load, it is too loose. Use the following
steps to adjust tension.
1. With belt installed and quick release lever
engaged, loosen Hex Bolt slightly. Figure 9.
Note: Figure 9 is depicted with the belt
removed for illustration purposes only.
Normally steps 1-4 are done with the belt
installed.
Figure 9.
2. Use a large open end adjustable wrench and
carefully rotate the eccentric to increase or
decrease tension. Remember: The belt
should not sound like a drum when plucked.
If it does, decrease the tension. Figure 10.
Figure 10.