Myford Idler shaft bushing problem

[Daniel PlaceParticipant @danielplace92871]

I have a Myford Super 7 and the clutch side bushing of the idler shaft is spinning in the casting.

This doesn't seem correct the shaft should be spinning in the bushing instead of the bushing in the casting, correct?

I do not see what would hold the bushing from spinning in the casting.

The shaft was free in the bushing but since it was spinning in the casting that didn't seem right and with no way in sight to stop it I put a large pair of vice grips on the bushing and stopped it from spinning. Then I put the pulleys in high and let it spin with the shaft spinning in the bushing instead of it in the housing and in 30 seconds the shaft seized up tight in the bushing.

My question is,

Is this bushing supposed to spin and run in the casting.

It hasn't got any play in it and I suppose it has been like this as long as I have owned it I just never noticed it spinning.

Any help from someone that knows these lathes would be greatly appreciated.

Thank you,

Daniel

[Daniel PlaceParticipant @danielplace92871]

[Daniel PlaceParticipant @danielplace92871]

Here is the bushing I am referring to. The whole piece is spinning in the casting.

The shaft was free in it but since I stopped the bushing from spinning in the casting by holding it manually now the shaft has tightened up in it and I have to let the whole thing spin.

Is it suppose to spin in the casting ?

[IMG]http://i731.photobucket.com/albums/ww319/danielplace1962/IMG_1693.jpg[/IMG]

[Daniel PlaceParticipant @danielplace92871]

[Daniel PlaceParticipant @danielplace92871]

Trying to post picture of the bushing.

It is the only photo in my album.

Can't seem to get it here in the thread though.

[Daniel PlaceParticipant @danielplace92871]

[Daniel PlaceParticipant @danielplace92871]

Posted a video instead.

That is the bushing that is spinning in the cast housing. It was free on the shaft but I held it for a while with large vise grips and now you can't hold it as it almost immediately seized on the shaft.

[John HaineParticipant @johnhaine32865]

You must like living dangerously!  I think the bushing is supposed to be a press fit in the casting. I guess it didn't get any oil and so seized onto the shaft, and got spun in the casting.. It's a strip down, bore out the hole in the casting to true it, make and fit a new bush time. There some Ex Myford service engineers who may be able to help, you should be able to find their contact details here somewhere.

Edited By John Haine on 01/01/2015 23:59:35

[Daniel PlaceParticipant @danielplace92871]

It is a bummer that I held it like I did because the shaft was free in the bushing and I could have disassembled it easily.

Now it is locked solid like one piece and you can't turn the shaft in the bushing at all.

It was free and I gave it a good dose of oil then held it and in 30 seconds it locked solid on the shaft.

Not sure how I will get it apart now. Heating it maybe but don't want to ruin the finish doing that.

Just have to get it apart now I guess. I can raised the metal with a punch in the bore or the bushing O.D. and red locktite it in.

Going to be tough to get the shaft out of it now.

[Daniel PlaceParticipant @danielplace92871]

I just want to be positive that it doesn't run like that because I can't imagine that little circlip running against a stationary bushing. That would be taking all the force of the clutch being disengaged and seems it would burn up the side of that retainer clip pretty fast.

That is the part that has me wondering what is up with it.

[Daniel PlaceParticipant @danielplace92871]

Well that was dumb of me. That was just a collar. It actually has that collar a hardened steel washer and the a ball bearing thrust washer and then the bushing is back in behind there.

I just took it all apart for nothing.

It sure looked like a problem but it evidently is nothing except myself not knowing how is was designed.

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