Porter Cable 333 TYPE 1 Random Orbit Palm Sander

[dannyb]

Porter Cable 333 TYPE 1 Random Orbit Palm Sander which has been good to me needs repair. The random speed doesn't work. When turned on the machine will go waaay to fast with no control. I'm wondering if this would be a belt that needs to be replaced? anyone had this happen

[Mike]

I think you're right about the belt. When the random orbit belt on those 333 sanders breaks it will cause the RPMs to go up and the pad moves differently. You'll need to remove the sander pad to replace the belt. The "belt" is really just a clear ring and periodically you'll need to replace it. It's Porter-Cable part #903373 and it can be purchased here:

Porter Cable 333 Belt / Ring