I have a Powermatic 66 I bought new in 98. There seems to be a vibration or knocking sound that started a couple months ago. After finally getting around to investigating the sound the Sheave arbor (fan belt pulley) as they call it was lose. I removed the pulley did not see any damage remove the arbor assembly bearings seem alright. So I reassembled everything turned it on everything sounded fine once I installed the blade the sound returned , removing the blade did not help the sound was still there. I did the whole procedure twice both times the saw sounded fine until I installed the blade I did use another blade for the second test. I did run the motor each time by itself no belts it sounds fine. The arbor and bearing assembly fell fine but all I can think is that's were the problem is. So at this point I'm thinking replacing the Sheave as a starting point it was lose for quiet awhile. If anybody has any suggestion of what else might be wrong I'd appreciate it?
- posted
14 years ago