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  #1  
Old September 14th, 2014, 04:37 PM
CaptMidnite
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Daniel Choi
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hub bearing rubber seal

For those who've replaced the hub roller bearing rubber seal, how far is it supposed to sit in the brake disc hub? I've pounded it down with a mallet. Is there supposed to be some wiggle room for the roller bearing assembly, or is the seal supposed to sit squat against the roller bearing? I can't seem to get it in any further.
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  #2  
Old September 14th, 2014, 05:55 PM
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Paul
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From memory, it should be recessed 4mm. The seal should not be rubbing against the bearing. I use an old drive member to set the hub seals.

Edit: That seal is trashed.
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  #3  
Old September 14th, 2014, 08:04 PM
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phil
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Quote:
Originally Posted by CaptMidnite View Post
For those who've replaced the hub roller bearing rubber seal, how far is it supposed to sit in the brake disc hub? I've pounded it down with a mallet. Is there supposed to be some wiggle room for the roller bearing assembly, or is the seal supposed to sit squat against the roller bearing? I can't seem to get it in any further.
Should go in all the way I believe which means against the race..... I used old race, flipped it and used it to hammer it in evenly...... seems to have gone back in like a glove
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  #4  
Old September 14th, 2014, 08:11 PM
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Bill Adams
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The bearing sits inside a machined shoulder. When you seat the seal all the way in against this shoulder, it doesn't hit the bearing race at all.
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  #5  
Old September 14th, 2014, 08:20 PM
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sonoronos
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Ed
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I just did these. The topmost part of the seal (the part that sticks out and faces the stub axle) must be below the level of the metal lip. 4mm sounds about right. The important part is that it clears the metal lip, otherwise the seal will rub against the face of the stub axle and tear apart in short order, causing leaks.
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  #6  
Old September 14th, 2014, 09:01 PM
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Mpigapicha
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phil
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Quote:
Originally Posted by o2batsea View Post
The bearing sits inside a machined shoulder. When you seat the seal all the way in against this shoulder, it doesn't hit the bearing race at all.
I stand corrected. I don't remember any machined shoulders beyond the center one where both race sit. I hammered it in and went no further.... Looked like where old one sat.
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  #7  
Old September 14th, 2014, 09:56 PM
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Phillip
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4mm, I marked it on an old bearing race.
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  #8  
Old September 15th, 2014, 01:45 PM
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Stephan Laputka
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As stated above. There is a tiny lip in there that the seal sits against. Use a bearing race to tap it down.
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  #9  
Old September 15th, 2014, 08:30 PM
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Chris Davis
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On my last one, it was stamped right on the seal--how convenient. I believe 4mm was the correct setting. It is in the manual...
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  #10  
Old September 16th, 2014, 02:55 PM
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thomas
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I think if you have an old hub assembly you can measure the lip on it. It is 4mm from memory. I used those to seat the seals with a rubber mallet.
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