New BMW Diff - leak from one driveshaft seal.

[Philip G]

I have completed the build of an R300 with BMW Diff. it only has 200 miles running. I have diff oil coming through seal on passenger side and spinning off onto bulkhead and A frame etc. Enough to need a clean after every run. On the first couple of runs it happened on driver side but that is dry now. I have checked level and there was some overfill. It is dry when stationary and level. I have removed and refitted both drive shafts. I did not replace the seals as they looked fine and looked difficult to get out. Any thoughts or insight from similar experiences welcomed. Am I missing something ? Does the seal take time to bed in ? Is it a pressure issue, i can't see a breather ? Will changing the seal make any difference ? Has anyone done this on the BMW before, best way to get seal out ? Thx for taking the time to read.

[Stationary M25 Traveller]

As this is a new build, I would be contacting CC pretty quickly.

[Garry7]

My experience (from this summer) is to contact CC straight away (James Gibson or Kate Richardson), but be clear that it is not the carrier issue that they are very "sensitive" about at the moment.

 

I have had a couple of warranty issues (since completing my build in June this year) and they have been excellent at resolution.

Best of luck

Garry

[Rob Walker]

You may have a deep scratch on the face that contacts the seal, withdraw the drifshaft and check, sometimes its possible to remove the scratch with fine emery cloth, refit the shaft and all is well.

 

Rob

[Philip G]

Thanks Guys. I am not missing anything obvious. I had contacted James who had sent me seals and said it could be checked at Dreadnought Motors, the Caterham Service place here in Scotland. I will go down the later route? It is clearly either shaft or seal.