Rear Hub Oil seal removal

Discuss mechanical problems here.
Forum rules
By using this site, you agree to our rules. Please see: Terms of Use
Post Reply
Minorsimon99
Minor Friendly
Posts: 11
Joined: Sun Jun 05, 2011 5:25 pm
MMOC Member: No

Rear Hub Oil seal removal

Post by Minorsimon99 »

Hi

I am overhasuling a rear hub and wanted to replace the oil seal. I have removed the rubber but this has left the metal ring outer part of the seal in situ which I cannot seem to remove. Any thoughts on removing it would be appreciated.

Thanks
Minorsimon99
Minor Friendly
Posts: 11
Joined: Sun Jun 05, 2011 5:25 pm
MMOC Member: No

Re: Rear Hub Oil seal removal

Post by Minorsimon99 »

Hi all, have sorted it, I didnt understand that the metal ring was part of the seal as the rubber had deteriorated, the metal seemed to be part of the hub, fairly easy to get the metal ring out when i understood it was seperate. But now when I refit the hub it is pushing the bearing out of the hub. Apart from cold steel any tricks that will get the bearing in place?

Many thanks
bmcecosse
Minor Maniac
Posts: 46561
Joined: Wed Feb 16, 2005 11:24 pm
Location: ML9
MMOC Member: No

Re: Rear Hub Oil seal removal

Post by bmcecosse »

Maybe the new seal is too thick? The bearing sticks out of the hub by 4 thou (0.004") and the paper gasket should also be 4 thou thick......so holding the bearing firmly in the hub.
ImageImage
Image
Minorsimon99
Minor Friendly
Posts: 11
Joined: Sun Jun 05, 2011 5:25 pm
MMOC Member: No

Re: Rear Hub Oil seal removal

Post by Minorsimon99 »

Hi, thanks for replying, I think I needed to seat the bearing rather than tap the hub back on as it appears to naturally go further along the axle tube and push the bearing back off if tapped to far
bmcecosse
Minor Maniac
Posts: 46561
Joined: Wed Feb 16, 2005 11:24 pm
Location: ML9
MMOC Member: No

Re: Rear Hub Oil seal removal

Post by bmcecosse »

Yes - it will - because there is nothing to hold the hub until you put the halfshaft/brake drum and wheel back on!
ImageImage
Image
philthehill
Minor Maniac
Posts: 11591
Joined: Thu Jul 19, 2012 12:05 pm
Location: Hampshire
MMOC Member: Yes

Re: Rear Hub Oil seal removal

Post by philthehill »

The hub bearing should be at least a pressed interference fit in the hub. See Minor Wksp Manual Section HH2 and use special tools 18G134 and adaptor 18G134Q (or similar) when fitting the hub bearing to the hub.
If the bearing is being pushed out of the hub when assembling the hub you either have a bearing which has been turning in the hub and worn the internal bearing housing of the hub or the wrong/non original rear hub bearing has been fitted. Could be either or both.
The axle tube should be checked for burrs or scores that may stop the bearing being fitted/sliding on and going fully home. When knocking the bearing on carefully hit the side of the bearing centre not the hub and use a brass punch to do so if you have not got the special tools or similar quoted above.

Post Reply