E Class 350D V6 Crank Seal Leak

[EOLtd]

I am struggling to find a good independent to replace the crank seal on my 2012 E Class estate - requires the gear box and T/C to be removed in order to do it and too much for some small independents. Main dealer asking a lot of money.
Does anyone have a recommendation where I may be able to get this done, either Aberdeen or Edinburgh ? Many thanks in advance, Simon.

 

[Wighty]

I am struggling to find a good independent to replace the crank seal on my 2012 E Class estate - requires the gear box and T/C to be removed in order to do it and too much for some small independents. Main dealer asking a lot of money.
Does anyone have a recommendation where I may be able to get this done, either Aberdeen or Edinburgh ? Many thanks in advance, Simon.

Are you sure it’s not the oil cooler seals that leak down the back of the engine onto the gearbox ?

 

[Wighty]

Member @Mark A might be able to help , he is Aberdeen area .

 

[Wighty]

Have a read of this thread

E350 Bluetec W212-Oil leaks

I have an e350 bluetec 2010 saloon, small amount of oil appeared a few weeks back (no warning light came on) under the front engine (I am no mechanic) took it to my local garage, thought it was a sump leak, turned out to be crank seal leak so out came the gearbox, new parts/oil fitted. I was...

forums.mercedesclub.org.uk

 

[EOLtd]

Are you sure it’s not the oil cooler seals that leak down the back of the engine onto the gearbox ?

I'm pretty certain it is the crank seal - the mechanic who normally does the cars for us (who doesn't have the capability in his workshop of removing the gearbox) cleaned everything up and took a photo (which has disappeared off my phone). I'm seeing him on Thursday so will double check, thank you.

 

[star]

Never replaced a rear crankshaft seal on this engine, seen plenty who have mistakingly replaced them.

 

[malcolm E53 AMG]

Yes been there and got the tea shirt the oil cooler leak does come down the back of the block and could easily be mistaken for the rear crankcase seal

 

[grayb]

This video gives a good insight, I think.

 

[Wighty]

I'm pretty certain it is the crank seal - the mechanic who normally does the cars for us (who doesn't have the capability in his workshop of removing the gearbox) cleaned everything up and took a photo (which has disappeared off my phone). I'm seeing him on Thursday so will double check, thank you.

Did you read that thread above buddy ?

 

[onefortheroad]

Did you read that thread above buddy ?

No salmon tin on that buddy

 

[EOLtd]

Have a read of this thread

E350 Bluetec W212-Oil leaks

I have an e350 bluetec 2010 saloon, small amount of oil appeared a few weeks back (no warning light came on) under the front engine (I am no mechanic) took it to my local garage, thought it was a sump leak, turned out to be crank seal leak so out came the gearbox, new parts/oil fitted. I was...

forums.mercedesclub.org.uk

Wighty, many thanks for the steer on this. Having discussed further with a couple of mechanics who won't take this on, as well as a gearbox specialist up here, going to have the oil cooler done (along with all the bits suggested by grayb in his excellent video) in a week or so; have the gearbox guy lined up to do the crank seal if necessary. Cheers for now.

 

[EOLtd]

This video gives a good insight, I think.

Many thanks for this, I'll share with the mechanic who's doping my engine week after next.

 

[Wighty]

Many thanks for this, I'll share with the mechanic who's doping my engine week after next.

Any updates buddy ?

 

[EOLtd]

So I finally return to the forum - it's been a long job as my mechanic is quite small and working in the engine bay has been a bit of an issue! Anyway, as you all predicted, it was a cooler leak. Took the opportunity to do all of the recommended replacements (as per SPR Autos) at the same time. Re-built a few weeks ago but struggling with the stepper motor ever since. Jimmy installed a new one during re-build and he's checked that and the old one which are giving the same issue. As soon as he connects his diagnostic computer (Snap-On Legend) the motor drives to 95% and with an open OR close command, it remains at 95%. Once he disconnects (and de-energises) it goes to back to 0%. After initial re-build (with new motor, on a road test, it just has no power) He's had to pull half of the job apart again just to connect directly to the in-situ (new) motor - but both the new and old do exactly the same i.e. 95% open on connection, no control, and 0% on disconnection. Any suggestions guys??

 

[Uncle Benz]

I would try a resistor mod in the first instance just to rule out or in the motor or linkage. If it drives fine with the resistor mod in place it must be something to do with the motor or linkage