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G8749 Drum/Flap Sander -9-
Attaching Sanding
Drum
The Sanding Drums are shipped with abrasive
sleeves already installed. Slide the sleeves off of
the drum far enough to check to see which way
the direction arrows run.
See Figure 4. Be sure to
deflate the drum completely to allow removal of
the sleeve. Even with no air pressure it is a snug
fit.
Figure 5. Attaching inflatable drum.
Figure 6. Checking inflation pressure.
Figure 4. Rotation direction of sleeve and spindle.
Do not use a compressor to inflate the pneu-
matic sanding drum. Use a hand-operated
pump only and check that the inflation does
not exceed 10 PSI. If over-inflated, the drum
may burst with considerable force, creating
the possiblility of serious personal injury.
Sleeve Rotation Arrow
Spindle Rotation Arrow
It can be helpful to use a pencil or other type of
temporary marker to mark the side of the drum
with an arrow indicating the direction in which the
sleeve is mounted. Always make certain when
installing the drum/sleeve assembly that the
direction of rotation of the sleeve matches the
rotation of the spindle it is being mounted on.
The drum attachments are shipped with the
sleeves mounted so that the large diameter drum
is mounted on the right hand spindle and the
smaller diameter on the left hand. These can be
easily changed by sliding the sleeve off of the
drum and turning it around.
The larger diameter hole of the drum goes onto
the spindle first. The mounting bolt with washer
goes through and threads into the spindle end.
Note that the threads on the left hand spindle are
LEFT HAND threads.
See Figure 5 for typical
installation. Finish the installation by mounting the
red end cap on the end of the bolt.
The Sanding Drums need to be inflated in order to
retain the abrasive sleeve. It is best to inflate with
a hand pump rather than an air compressor.
Maximum inflation should never exceed 10 PSI.
Inflate slightly less if doing a contour where a little
bit of flexibility of the sleeve is required.
Figure 6
shows checking the inflation pressure with a good
quality gauge.