Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Andy A on 03 April 2014, 08:16:35

Title: Massive oil leak from Diff
Post by: Andy A on 03 April 2014, 08:16:35

Can some one tell me what the cause of the oil leak is and is it a dificult/hard job to fix? Please see photo links below.

https://www.flickr.com/photos/53447058@N05/13597215623/in/photostream/
https://www.flickr.com/photos/53447058@N05/13597188715/in/photostream/
https://www.flickr.com/photos/53447058@N05/13597185505/
https://www.flickr.com/photos/53447058@N05/13597212073/in/photostream/
https://www.flickr.com/photos/53447058@N05/13597561084/in/photostream/

Is this the fuel filter? There was a new one in a box in the boot when I bought the car recently, not sure why.
https://www.flickr.com/photos/53447058@N05/13597562024/in/photostream/

Thanks

Title: Re: Massive oil leak from Diff
Post by: Andy B on 03 April 2014, 08:29:51

This is the guide for the diff seal. All jobs are easy if you know what you're doing  ;) ;) You must make sure every thing is marked prior to slackening off the bearing so it can go back exactly as it was before to ensure the correct pre-load on the bearing/pinion/crownwheel
http://www.omegaowners.com/forum/index.php?topic=90523.0

Yes .... that's your fuel filter.  :y :y

Title: Re: Massive oil leak from Diff
Post by: Andy A on 03 April 2014, 08:52:34

Nice guide.

Is it best to buy the seal from Vauxhall or will any make of seal for my car do?

Thanks

Title: Re: Massive oil leak from Diff
Post by: Andy B on 03 April 2014, 09:17:57

Quote from: dx90 on 03 April 2014, 08:52:34

.....

Is it best to buy the seal from Vauxhall or will any make of seal for my car do?

 ...

Pass  :-\ I never got round to that particular fault on my Omega before it went  :-[

Title: Re: Massive oil leak from Diff
Post by: Andy A on 03 April 2014, 09:50:13

Ok, thanks for your help. :y

Title: Re: Massive oil leak from Diff
Post by: amba on 03 April 2014, 10:28:37

I had mine replaced on old Elite by Daz whilst doing an autobox swop.

Part was genuine GM and think from memory around £35.Was made easier by somebody who knew what they were doing and also having the car in the air at good working height as you do need to mark all parts before any dismantling to be sure it all goes back as before.

We not only counted the full revolutions of the nut but also the number of flats on the nut it passed a fixed point to double check.Again from memory think nut was around 13 full turns to be removed from its original postion,also make sure you have the new seal well soaked in oil on refitting

Title: Re: Massive oil leak from Diff
Post by: Marks DTM Calib on 03 April 2014, 11:22:02

The key bit to wipe with oil is the running face of the seal.

Never tried a pattern item so cant comment, I note they are available here but no idea as to the manufacturer:

http://www.vauxhall-car-parts.co.uk/acatalog/24435952---Vauxhall-Rear-Axle-Pinion-Oil-Seal.html