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Join Date: Jul 2019
Posts: 147
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Do rear wheel bearings have an IN/OUT side ?
Hi,
because of an earlier post (front suspension tune up) I learned that most probably, one of the rear wheel bearings needs replacement. I'm going to try to tackle this myself, armed with the Bentley Manual. I bought 2 rear wheel bearings, and on one side they have a numbering /code. Is that for pointing inwards of the car ? or doesn't it matter ? |
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06-05-2024, 03:10 AM
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Doesn’t matter.
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House producers wanted to end the show after season 8 to keep the enigmatic appeal of the central character and maintain the show's mystique. Ahhh The Mystique!!! |
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06-05-2024, 05:30 AM
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Replace them both
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06-06-2024, 04:54 PM
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rear wheel bearing: where did I go wrong
Hi,
because of the low whining noise, I learned from the forum that most probably the rear wheel bearing(s) were broken. So I decided to change these. All went fairly well ... So far so good...  but then I installed the wheel hub and pushed the inner ring through the back... and when trying to allign the wheel hub correctly (it was slightly off), I cracked the inner ring in the front, like you have when disassemblying... so bye bye new wheel bearing... Can't remember but the only possibility is that I used a too large disc at the back that did not touch the surface of the bearing properly ? Do you agree ? 2nd question: does this have a correct side to install ? the bearing is not the same one side compared to the other...the selling company could not tell properly... what is in or outside ?  
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06-12-2024, 12:05 PM
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Posts: 899
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Place the new wheel bearing in a sandwich bag and put it in the freezer for 2-3 days before installation.
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06-12-2024, 12:10 PM
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suggestion
the freezer works nicely, you will find it is easier to install
and do make sure that your press is on the outer flange.
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1975 911S Targa Silver Anniversary Edition |
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06-12-2024, 12:56 PM
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I did the freezer thing as well as make up a piece of threaded rods/suitable plates to press the bearing in. I also took the heat gun to the trailing arm, made it hot to the touch but no where close to melting or anything like that.
Did not need it. My bearings were in the freezer for three months, they just dropped in. One required a light tap with a rubber hammer. D. |
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06-12-2024, 01:50 PM
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PCA Member since 1988
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...4 months would have been even better.
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners. Cars are for driving. If you want art, get something you can hang on the wall! |
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06-12-2024, 03:08 PM
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Quote:
 D. |
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06-12-2024, 03:46 PM
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the freezer thing I did, that's why the bearing went in so well (picture 1)
but I then pressed out the inner bearing while installing the wheel hub, that was the problem... hence my question: does someone think that the bearing has a 'side' ? the one side seems to be more metal than the other side, where there is a rubber inner ring... what's 'inside' or 'outside' you think ? |
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06-12-2024, 10:41 PM
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I just replaced mine and I don’t think there is a difference. Visually and dimensionally there is no difference on my bearings. I see yours has a metal shield on one side. I have seen other bearings with this feature, but it isn’t necessary on this application. It is a standard bearing size. Nothing special about it. Porsche designer went to a book of standard bearings and chose one that worked back in 1965ish. I have never heard of a bearing design where it differs with the direction of rotation.
I ordered a set from our host (FAG) which is a German company, and the marking stated made in China. That was against every bone in my body. The (SKF), Swedish company, they sell was twice the amount. I ended up buying a kit intended for a BMW. The kit had some spring washers that I didn’t use. The bearing has the industry standard number that the others have too. I purchased two (SKF) from an English company and the price with shipping was less than ONE bearing here with our host. These bearings were made in Italy. I have 100% confidence in Italian made over China made… Last edited by porschedude996; 06-13-2024 at 04:40 AM.. |
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06-13-2024, 04:15 AM
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Quote:
__________________
House producers wanted to end the show after season 8 to keep the enigmatic appeal of the central character and maintain the show's mystique. Ahhh The Mystique!!! |
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06-13-2024, 07:00 AM
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and with that last info in mind, I installed the wheel bearing again now with 'back end support' and everything turned out perfectly !
case closed (well, not yet for me, ordered a new bearing for the other side, but then will have peace of mind) |
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06-14-2024, 02:42 AM
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installed both left and right rear bearing and a test ride confirmed what you forum guys told me before...
PROBLEM SOLVED: the low grunt noise when driving straight or turning to the left has disappeared. I can hear the engine again thank you all ! |
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07-01-2024, 12:42 AM
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1983 Porsche 911SC
2004 Ferrari F360
2001 Porsche 996TT
