My Porter Cable model 333 five inch random orbit sander stopped random orbiting. It only spins at high speed now. Something msut have broke. I took it apart and can't find the culprit. Any ideas? I found a parts diagram and parts source on the web, but I don't know what to replace.
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Bet it's the "brake" strap. This is a plastic strap that slows down the spindle a bit so the speed won't run away as you lift the sander from the surface. You can see this part through the lower vent holes.
-Bruce
Bruce is right about the part. I have a good tool repair place nearby (Daytona Beach, FL area) that has them in stock. I bought a couple against the next time it breaks. Not very expensive (although more than you would think for a little piece of plastic), and easy to replace.
- - LRod
Master Woodbutcher and seasoned termite
Shamelessly whoring my website since 1999
Belt #37 in the PC parts diagram probably broke or slipped off pulley #37B.
Art
This is a repost. the original seems to have been lost by scumcast.
************Belt #37 in the PC parts diagram probably broke or slipped off pulley #37B.
Art
Geez, belt 37 isn't too bad, but some of the other parts cost as much as the sander!
Thanx guys. It was the pulley #37 that was spinning. I tightened it up and presto, it works. I should replace the belt as well, just for good measure.
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Maybe put a dab of threadlock to keep it from coming loose again.
Wayne
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