Eccentric movement

[johnheyd]

Hi I need some advice since I know I can't rely on Shopsmith to help. I've had my Power Pro for about 6 years now and have been noticing an increase in bearing noise. also I'm getting what seems to be belt slippage. So I opened up the motor and looked at the Eccentric and noticed that the Eccentric sleeve seemed to have slipped. From Pictures of the assembly I've seen, it seems that the Sleeve should be even or flush with the motor frame housing, but on my unit, it has depressed about a quarter of an inch. The belts also seem to be out of alignment meaning that the top belt seems to be at a slight angle. Now I'm not sure if I should be running the motor worried that the sleeve may eventually work it's way out - My question to anyone is - is this normal? What can be done to correct the condition. Should I try to send this back to the factory? If requested, I can send a photo. Let me know what you think.

[reible]

The powerpro needs belt tightening from time to time, one of mine needs it about once a year with my usage and the other seems to go longer.

In your case it is pretty clear that it has issues and pretty easy to see why. The lock washer is not compressed meaning that it is not tight enough to hold things from moving. It has now gone to the point that the bolt head is hitting the casting which will not allow it to move any farther in that direction.

What you need to do is get the shaft back to being flush and then do the balancing adjustment to get the belts back into correct tension. The manual covers that.

You should also look at the belts to see if there has been any damage due to the misalignment.

When heightening the bolt don't go all gorilla on it or you might brake the casting but you do need to get the lock washer compressed.

sp1.jpg (163.27 KiB) Viewed 7886 times

Ed

[johnheyd]

Thanks for the quick reply but now I must ask - how do I go about getting the shaft back flush? Do I have to release the motor removing the tension on the belts then pull the shaft back out so they are flush? This sounds to be a major adjustment. as far as the lock washer is concerned, I loosened it to go an adjust the eccentric but when I saw the depressed sleeve, I stopped.

[reible]

Make sure the eccentric can turn and if it can then pulling it back out should not be a big issue. Simply attach say a lathe face plate, drill chuck or something else to the shaft and pull. Again if things do not move then don't force them.

Ed

[johnheyd]

Thank you, thank you Ed. That worked like a champ. Fixed my problem. Power Pro runs like new again. This Forum is great for help. John

[ChrisNeilan]

This has also happend to me twice. It’s a simple fix, more of an adjustment really. Loosen the eccentric and pull the shaft back, crank the tension (gently) and tighten the eccentric. As Ed said, don’t use your Gorilla stength. I prefer to just slightly snug it, rather than crack the casting. That is really the weak spot of the headstock, and is difficult to repair if you do crack it.