Question on Turbocharged Engine Timing Chain Guides Replacement

Hello guys.
I had an issue with my mini r56 S 2008. It had rough idle and oil was leaking from turbo supply line. Well, i've done the job with all new parts according to many DIY videos/manuals new timing chain kit and new oil feed line. I was ready to finish all the stuff, when I noticed that crankshaft seal new one is leaking. Yes, without even trying to crank the engine. I simply lubricated new chain and it's guides with half a quart of oil when the head gasket was off, and after manual rotations to finish the timing job, I noticed that seal is leaking.

First I thought that it's a bad installation of a seal in term of depth I didn't install new pulley hub, so I tried to push the seal more without removing all the stuff. It wouldn't stop leaking. Then, I noticed that the pulley hub is actually NOT CENTERED relatively to seal housing... Well, I am a bit upset and confused. No manuals were talking about centering the hub with the seal housing..

The only thing I didn't do according to the manual - I've tightened crankshaft bolt without special tool. I was only relying on flywheel locker and applied a bit of counter-force to the vibration pulley when tightening.

I don't believe I could damage the crankshaft, so, what do you guys think could go wrong? Is there any techniques to put the pulley hub into correct position? I rotated the crankshaft externally and my pulley hub is definitely moving 1 or 2 mm up and down, which makes the seal pressed inequality around the hub, which lead to oil leak. And once again, all of this is just by rotating the engine manually. I was lucky enough well.. to notice the issue before I put my radiator back from maintenance positions.

Any help is highly appreciated.

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This post was auto-generated based upon a question asked on our tech article page here: MINI Cooper R56 Turbocharged Engine Timing Chain Guides Replacement (2007-2011) | Pelican Parts DIY Maintenance Article

[Nick at Pelican Parts]

The crankshaft hub should center on the chains and with help of the fastener hit center. I have not had an issue of it being un-centered. if you didn't use all the special tools that may be why. The pin used to lock the crankshaft can't take the force needed to tighten hub fastener.

This article shows the special tools needed for the crank seal:

http://www.pelicanparts.com/techarticles/MINI_R56/02-ENGINE-Crankshaft_Seal_Replacement/02-ENGINE-Crankshaft_Seal_Replacement.htm

- Nick