New Shopsmith Mark V owner question.

[Nick]

Matt:
If the machine was working before you did a clean & lube, then the most likely problem is wear on the fan sheave (504207) and the key (504209). There may also be wear on the sheave spacer (504205). The floating sheave (504208) doesn't wear as much as the fan sheave, but if you don't replace it as well, you may get some "fan rattle."

Purchase the four replacement parts I just listed. Drill a hole in a scrap of wood that fits over the end of the motor shaft and retaining ring, but not over the washers behind the ring. Use this to compress the spring so you can remove the retaining ring. Then carefully release the tension on the spring and washer. Loosen the set screw than holds the fan sheave to the shaft and pry the two sheaves apart with a couple of screwdrivers. Remove the old sheaves, key, and spacer, then replace with new ones. Compress the spring and the washer onto the shaft, replace the retaining ring, and you should be good to go.

Pawel:
Try putting some beeswax on the teeth of the quadrant assembly (504221) and see is that makes the action any easier.

With all good wishes,

[charlese]

Hi Charlese,

Oh no, the machine runs fine. Everything is spinning as it should. When I dial to slow, the shaft rotates slowly so I can drill, when I dial to fast it increases gradually so nothing is "stuck" in these terms.

The only thing I noticed is that the speed dial is not "smooth" as it should so I wanted to take a look inside by taking off the speed control dial. Other than that I'm very happy with my purchase.

Cheers,
Pawel

Hi again! When you say the speed dial is not smooth, I am realizing you are talking about the actual speed dial. (the thing with the letters on it) Sorry for not believing you the first time, just trying to give a new guy some latitude on wording.

Earlier in post #3 I mentioned the "dial Spring" It falls into the groove in the back of the speed dial causing the dial to be jerky at one point of it's rotation. Sorry, can't recall the letter that is at the top during that jerk. If jerkiness only happens once during rotation there is no problem.

[mattss]

Matt:
If the machine was working before you did a clean & lube, then the most likely problem is wear on the fan sheave (504207) and the key (504209). There may also be wear on the sheave spacer (504205). The floating sheave (504208) doesn't wear as much as the fan sheave, but if you don't replace it as well, you may get some "fan rattle."
With all good wishes,

Machine was not working. Once apart I took krokus cloth to it, now the fan sheave moves free with no noticeable play. Have written down the part numbers though, thanks. Also updated my account so I get a email when there is activity on a thread I posted too. Location too.

New Problem: Got it all back together again and turned it on. Tried to adjust speed and blew fuse. Saw post about this symptom and full speed but as I was making adjustment found that the idler-shaft became to hot to the touch after only about one minute. It spins freely enough, took it out and there is a bit of clicking and play in the bearing. Is the heat a common indicator that the bearing is shot? On the page of "17th most replaced parts" is part #515556 the bearing assembly? - Thanks