XSeries-forum

Hi

Been holding this one off since the new year due to poor weather at weekends for a couple of month, had no excuse today to investigate the bad oil leak which has had the car parked up.

Looks to be coming from the crankshaft pulley.

Has anyone come across this before?

With the engine in this is going to be a bit tricky for clearance but yes looks like crank seal getting something big enough diameter to tap it in should be the only issue after you get the pulley off which i think is a 4 bolt pulley , you changed that before so you know how to get it off.

I'm guessing when the old pulley gave up its mis-balance knackered up the crankshaft seal.

Parts ordered, job for next weekend if they arrive in time.

Just wear and tear at that miles it did well

Attempted today, tried the two self tapping screws trick into seal to pull out. Wouldn't budge!

Ordered an overnight seal puller, Amazon job so not holding up much hope!

My faith in Amazon tools was warranted! Snapped one of the puller arms within a couple of minutes of use. The seal didn't move either.....

Need something more heavy duty, and most likely more expensive to buy!

Need some bigger screws unfortunately the crank is in the way so using some more effective pullers won't work .

This vid they had similar trouble , I wonder would tapping it on in at one point tilt it and make it pop out at the other side to get a grip on and make removal easier

Got another puller, https://www.amazon.co.uk/Lisle-58430-Sh ... th=1&psc=1. Tried it this afternoon!

Snapped the end off within 10 seconds of using it.....

Plan C --> Thank god for same day Amazon prime, got this one 30 mins ago: https://www.amazon.co.uk/dp/B09339K3F1? ... asin_title

Slowly managed to ease it out took about 10 minutes though and a lot of perserverance.

The OEM puller is tubular seems to screw into the seal and then a bolt pushes against the crankshaft and pulls it out.
Another series of special tools are then used to align and push the seal into place. There is a warning though (applies to the OEM seal if you are using one - no idea for after market). Do not touch the surface of the seal lip at all. It is coated with Teflon and must not be contaminated. If it is, even slightly, then do not use it. It won’t seal properly (or won’t for very long). The end of the crankshaft must also be spotlessly clean with no residue. A fine Scotbrite can be used to clean the surface. Emery Cloth is a no no!

Glad you got it sorted

The seal itself has disintegrated, hence the two self tapping screw trick didn't work. Once I put a kink in the metal frame it slowly worked it way out. The seal I got was an OEM Vaico seal, I was advised to put it in with silicone spray. Is that a no no then?

It just says do not touch with fingers.

Easier said than done, was a bugger to get in.

Not hopeful it will seal fully.

Engine out job really to do it properly.....

The good book says you can do it with the engine in place. Needs a bit of tube the right size to tap it home - or BMWs special tool which cranks it in using one of the cranshaft holes to mount a pusher. The first tool bolts into one of the four holes and the second tool goes over the centred stud. The nut then winds on against the sleeve to push the bearing home.

The inner seal folds over itself as interference fit, the seal comes with a plastic guide in the middle to help this transition onto the shaft.

Like I said easier said than done trying to line it up central then hold it there whilst pushing it in......