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PostPosted: January 10, 2018, 11:04 am 
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Joined: February 28, 2009, 11:09 pm
Posts: 1261
Location: Connersville, Indiana
I am working with a friend to put together a kit to replace upper steering column bearings. The kit consists of a steel sleeve and a UHMW plastic bush bearing. There is about .003" clearance between the shaft and sleeve, the shaft is semi-finished. The question: Should the sleeve be held in place (spring pressure) or is it okay if it is allowed to slide, or even rotate on the shaft?

Bill


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PostPosted: January 10, 2018, 12:47 pm 
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Joined: April 5, 2008, 2:25 am
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Location: Fort Worth, Texas
WHY? What's wrong with a bearing?

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PostPosted: January 10, 2018, 1:03 pm 
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Joined: February 28, 2009, 11:09 pm
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Location: Connersville, Indiana
carguy123 wrote:
WHY? What's wrong with a bearing?

We cannot find a conventional bearing that will fit. I.D. of 1", O.D. is 1.540". Shaft is not of bearing surface quality.

My aim is to make something he can sell as a replacement. The OE bearing looks like something assembled out of old bicycle parts and is uniformly disliked by everyone that has ever touched one. Advanced age (and rust) has done nothing to improve them. A major issue is it has a very annoying rattle that cannot be eliminated.

Bill


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PostPosted: January 10, 2018, 1:04 pm 
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Joined: July 17, 2008, 9:11 am
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Location: West Chicago,IL
That is a common upgrade for replacing the oiled leather bushing in the MGA steering shafts. In that case, the UHMW bushing is an interference fit to the tube and the shaft is clearance a few thou. Sorry, I don't remember if the shaft itself is a machined or rough finish.

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PostPosted: January 10, 2018, 2:38 pm 
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Joined: February 8, 2014, 10:47 pm
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Location: Cornholio OR "Where the magic happens"
You can always pull the shaft out and polish it?

I'm assuming it's removable. :oops:

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PostPosted: January 10, 2018, 3:55 pm 
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Joined: February 28, 2009, 11:09 pm
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Location: Connersville, Indiana
Bent Wrench wrote:
You can always pull the shaft out and polish it?

I'm assuming it's removable. :oops:

I've been told that removing the shaft results in a bunch of little round things rolling out of the steering box and all over the place. It would also mean removing the engine.

A spring would not be difficult, but he wants to keep this as simple as possible. I have a problem with a repair sleeve that is free to move, he does not. I would like to use a sleeve retaining compound, but that would make it a permanent assembly.

Bill


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PostPosted: January 10, 2018, 5:35 pm 
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Joined: December 29, 2007, 10:41 pm
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Location: Vancouver, BC
I'd glue the sleeve in place with something like Loctite 635 or 660. To remove, simply apply heat and it should release.


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