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> 911 & 914/6 Upper Steering Bearing, I found a replacement - any interest?
laflaur
post Apr 8 2013, 09:26 PM
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Ok,the bearing is in.
The shim part is the part you will need to address,not being attached to the bearing it wants to go before the bearing,and that makes it hard to get them even.
I took the hose clamp and tightened it down wiith the shim around it ,got it started by taking a 32mm socket face toward the column and gently tapping a couple of times o start it,take off the clamp and continue to gently tap. The bearing will only go until it is even with edge of the column,probably because the shim is not even. I tried my monte carlo and stock wheel. They both seem to work fine,no binding and there is a BIG difference in the slop,like there is none left.
I may remove it and play with the shim some more,maybe bond it to the bearing?....somehow
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McMark
post Apr 8 2013, 09:48 PM
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I used a wide flat piece of metal to tap everything into place at the same time. Maybe I need to build an installation tool that uses the steering wheel threads to pull/push the assembly into place evenly.

Thanks for the feedback. (IMG:style_emoticons/default/smiley_notworthy.gif) Keep me/us posted if there are any further revelations or thoughts.
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laflaur
post Apr 8 2013, 09:55 PM
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yeah that what I was thinking,because it is not that far off,just enought to possibly frustrate people.Another thought..start with more bearing in the column and the shim flush with the front edge of the bearing.
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McMark
post Apr 8 2013, 11:13 PM
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(IMG:style_emoticons/default/agree.gif) Yup. Just wast sure how to accurately explain that. I probably need pictures to go with this kit.
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sbsix
post Apr 13 2013, 02:30 PM
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Well my thoughts of finding a small bearing puller to yank out the existing steering bearing did not bear fruit....nothing around that will do the job. The Porsche service & repair manual lists a specific bearing puller with two pieces, Kukko 22-1 and Kukko-4 for this job, but that's another story.

In any case, I took the tried and true method of a light hammer and increasing widths of screwdrivers to get the bearing lip far enough away from the steering column to gently tap it from the back and the bearing popped right out. Less elegant, but it works. All told it took me about 20 minutes of working the bearing out after I removed the plastic housing and horn ring. I did not need to use a vise grip. I did end up with a couple of very mild scratches on the end of the steering column from all of this, but nothing really big. Plus my close vision sucks, so that doesn't help at all.

I tried my collegue's method of wrapping the steel shim with the hose clamp, but I could not get the shim to sit within the column this way, so I removed the clamp and set the shim in without it, just about half way. I positioned the new bearing in place and gently tapped it with a 30mm socket. I did place a very small amount of bearing grease around the outside of the new bearing to facilitate installation.

The bearing went in very easily, and by using the 30mm socket, which only covered the bearing and not the shim, the bearing was seated just before the shim. I just had to tap the shim home and both were seated level with the end of the steering column.

The steering wheel went on next to test the bearing and it worked as Mark intended. No slop whatsoever! The wheel functioned as intended and there was absolutely no play in it.


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sbsix
post Apr 13 2013, 02:33 PM
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The above picture shows the column after the NOS bearing was removed.

This picture shows the metal shim half way in.


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sbsix
post Apr 13 2013, 02:35 PM
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This shows the bearing just started.


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sbsix
post Apr 13 2013, 02:36 PM
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This one shows both the shim and new bearing seated.


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sbsix
post Apr 13 2013, 02:41 PM
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Another shot of the bearing and shim seated, from above.


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sbsix
post Apr 13 2013, 02:43 PM
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One more of the completed bearing installation.


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sbsix
post Apr 13 2013, 02:44 PM
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Steering wheel attached for a "slop" test.


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sbsix
post Apr 13 2013, 02:59 PM
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Old NOS bearing is on the left, and a brand new NOS bearing on the right. There was no wear or mars on the old bearing, it appeared as fresh as the day Uncle Hans installed it. I didn't clean off the old grease before taking the picture.

There is no difference in the two bearings, except for a "Made in Germany" around the circumference of the new NOS bearing and it's build date of 12/97. IIRC I paid about $160 for it and went through Stoddard.

The NOS bearing causes the slop in the steering wheel. If I had installed the new NOS bearing I would not have gotten rid of the free play in the steering wheel! The wheel simply does not have a tight tolerence with the NOS bearing in the steering column. I'm wondering if all 914-6's came with this issue.

Anyone care to comment on their steering "free play?"

Mark, long story short, your bearing works as intended. The removal of the old bearing is cumbersome using a hammer and screwdrivers, but short of designing and building a specific removal tool, it looks like its the only way to go. Installation could not have been easier, and the end result is impressive.

I'm very glad to have had the chance to help out.


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Britain Smith
post Apr 13 2013, 09:33 PM
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Will these bearings work in a '69 912?

-Britain
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McMark
post Apr 14 2013, 09:44 AM
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Britain, I need someone to try one out. PM comin' your way.
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laflaur
post Apr 14 2013, 02:40 PM
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sbsix,
great pictures and nice write up.
I failed to mention that I used a 30mm after the 32.too completley seat the bearing.
I may attempt a removal,and reinstall using your method with the shim,but I am completly satisfied with the results.
Dig the helper!
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sbsix
post Apr 14 2013, 03:06 PM
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Thanks for the kind words..my steering wheel feel is perfect with this bearing installed. Getting the plastic steering column covers back on was the biggest PITA of the whole project.

My shop cat Leo is 14 years old now and a hoot to have around when I'm in the garage. Wish he had thumbs to help out a bit more, though.


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jaxdream
post Apr 14 2013, 09:13 PM
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Just an idea to try iffin any of you guys have one , a power steering pump pulley puller may work out with the circular jaws designed to bite into the circle around the pulley snout . ??? Maybe ?? (IMG:style_emoticons/default/WTF.gif)

Jack
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sbsix
post Apr 15 2013, 09:40 AM
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QUOTE(jaxdream @ Apr 14 2013, 08:13 PM) *

Just an idea to try iffin any of you guys have one , a power steering pump pulley puller may work out with the circular jaws designed to bite into the circle around the pulley snout . ??? Maybe ?? (IMG:style_emoticons/default/WTF.gif)

Jack


Jack,

Not familiar with that tool at all...can you download a picture? The space between the steering column and the bearing is very small and even the smallest bearing puller I could find, a clutch pilot bearing puller, was way too big.

Gary
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McMark
post Apr 15 2013, 04:59 PM
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That's the right idea, but I suspect the diameter is wrong and the steering shaft is too long in the center.


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db9146
post Apr 1 2018, 08:46 PM
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Does anyone have the part number of the replacement bearing used and the thickness of the shim material?

Seems I need to perform this same surgery on mine.

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