Rear crank shaft seal

[paulbell6]

Hi all, just removed the engine and gearbox to investigate an oil leak from the rear of the engine - oil dripping out of the bell housing. Having separated the box from the engine and removed the bits and bobs to get to the seal I noticed that whilst removing the seal from the shaft it seemed a very loose fit on the shaft. I have a new double lip seal to fit as a replacement and I was wondering if anyone has noticed this before. The shaft looks okay and does not appear to have any worn areas or lips.
any comments would be gratefully received before I press on and fit the new seal.

Many thanks

Paul

Just to say the previous oil seal was brand new and the engine was only run for about 10 minutes

[milothedog]

Hi all, just removed the engine and gearbox to investigate an oil leak from the rear of the engine - oil dripping out of the bell housing. Having separated the box from the engine and removed the bits and bobs to get to the seal I noticed that whilst removing the seal from the shaft it seemed a very loose fit on the shaft. I have a new double lip seal to fit as a replacement and I was wondering if anyone has noticed this before. The shaft looks okay and does not appear to have any worn areas or lips.
any comments would be gratefully received before I press on and fit the new seal.

Many thanks

Paul

Just to say the previous oil seal was brand new and the engine was only run for about 10 minutes

Paul I have had this problem with seals on someone else's car. We fitted a new Crankshaft and a Speedy sleeve on it. It leaked and still doe's a little despite even after having the box out and replacing it for a second time with one from a different supplier. Everything has been checked and there is no logical reason for it but it does. He has a double lipped seal ready for when the box comes out again, hopefully that will cure it.

One thing you may want to look at is did you put a sealant on the flywheel or flex plate bolts, new bolts are impregnated with it but using the old ones again you need to reapply it.

Best of luck with it.

Ian.

[paulbell6]

Hi Ian, yes the flywheel bolts were fitted with a proprietary thread sealant, which was so good that I had to use a ratchet for the entire length of the bolts to remove them and there was no sign of oil on the threads. I have heard of speedy sleeves before, I assume that they are some how glued onto the shaft to increase its diameter slightly to improve the interference fit with the seal. Do you know where they cam be bought?

Thanks

Paul

[milothedog]

Hi Ian, yes the flywheel bolts were fitted with a proprietary thread sealant, which was so good that I had to use a ratchet for the entire length of the bolts to remove them and there was no sign of oil on the threads. I have heard of speedy sleeves before, I assume that they are some how glued onto the shaft to increase its diameter slightly to improve the interference fit with the seal. Do you know where they cam be bought?

Thanks

Paul

I'm not sure where you would get one Paul but if there are no marks on your crankshaft then you shouldn't need one. If you do fit one you will need to mic up the crank to determine what size you need. they come with a tool to install it, they are an interference fit so theoretically need no sealant but a little thread lock or similar can only help.

Ian

[DJT]

http://www.skfmarcomms.co.uk/focus/speedi.htm

Type 'speedi sleeve' in Google and several links come up, including Youtube videos.

[Stagdad]

Maybe someone thought it was a good idea to machine the wear groove out of the seal area and then fit a smaller seal ,years later it wouldn't be known about.just a thought

Cheers Steve

[paulbell6]

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Morning all, just back from the garage investigating my oil leak from the back of the engine. Being aware of the oil gallery plug in the back of the block I removed the adaptor plate and found what looks like a small leak from the jackshaft bearing. should there be a seal here? on the back of the adaptor plate is some quite heavy manufacturers stamping, which I believe corresponds to the position of the jackshaft. My initial thought was that I could fit some form of flat gasket here having smoothed off the stamping.
Am I being a bit naive to think that I can get away with this, or is it time to remove the Jackshaft and replace the rear bush and or maybe the shaft as well? The engine has only done 57K and has not been working since 1992, so hopefully the shaft will be okay but then everything that can go wrong has gone wrong so far so who am I kidding.
Your views on the matter, as always would be gratefully received

Many thanks

Paul

[paulbell6]

Can I please apply for the Numpty of the year award!
I have answered my own question and realised that I should have fitted a core plug at the back of the engine, where the Jackshaft bearing is. Doh!
No excuses just stupidity and maybe trying to commit too much to memory over a rebuild lasting 20 years, it did all seem so obvious at the time.
Sure I won't be the first nor will I be the last!

Paul

[milothedog]

Can I please apply for the Numpty of the year award!
I have answered my own question and realised that I should have fitted a core plug at the back of the engine, where the Jackshaft bearing is. Doh!
No excuses just stupidity and maybe trying to commit too much to memory over a rebuild lasting 20 years, it did all seem so obvious at the time.
Sure I won't be the first nor will I be the last!

Paul

We all do it Paul. At least your post reminded me about the core plug at the back though, something else to bear in mind in the future.

Ian.