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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Front Vacuum Pump Seal



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      01-06-2022, 12:04 PM   #1
Dave92N54
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Who's replaced it?

I think mine is leaking:
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I'm mostly worried because it seems my crankcase is pressurizing at least a bit. My oil breather cap is spitting out enough oil to make my engine cover wet. Little surprised this is happening. Flapper is new, valve cover is less than 2 years old with no signs of leaks or cracks, and low side is an OCC (i'd imagine shouldn't matter under WOT though so).
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      01-08-2022, 03:38 PM   #2
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Nobody?

Trying to locate the tool if anyone here has one I could rent.
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      01-09-2022, 07:12 AM   #3
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Not familiar w this part.
Do you have a pcv valve?
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      01-09-2022, 11:02 AM   #4
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Quote:
Originally Posted by Sgop335 View Post
Not familiar w this part.
Do you have a pcv valve?
It's the seal on the front of the motor behind the belts and pulleys. If i'm correct the tool locks into where two of the pulleys go in order to push the seal in flush.

I have a low side catch can, I still have my old PCV valve but I don't think that's the issue considering it's not pressurizing at idle (confirmed by removing cap at idle).
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      01-09-2022, 01:11 PM   #5
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Quote:
Originally Posted by Dave92N54 View Post
It's the seal on the front of the motor behind the belts and pulleys. If i'm correct the tool locks into where two of the pulleys go in order to push the seal in flush.

I have a low side catch can, I still have my old PCV valve but I don't think that's the issue considering it's not pressurizing at idle (confirmed by removing cap at idle).
Are you referring to the crank seal?
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      01-09-2022, 01:33 PM   #6
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Quote:
Originally Posted by Saif2018 View Post
Quote:
Originally Posted by Dave92N54 View Post
It's the seal on the front of the motor behind the belts and pulleys. If i'm correct the tool locks into where two of the pulleys go in order to push the seal in flush.

I have a low side catch can, I still have my old PCV valve but I don't think that's the issue considering it's not pressurizing at idle (confirmed by removing cap at idle).
Are you referring to the crank seal?
No.

Part number is: 11117530262

It is below the alternator on the front of the motor, behind all the pulleys.
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      01-09-2022, 07:55 PM   #7
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Quote:
Originally Posted by Dave92N54 View Post
No.

Part number is: 11117530262

It is below the alternator on the front of the motor, behind all the pulleys.
Ok mate, I've not done it myself, only had the crank seals done at a garage, sorry I can't help much.
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      01-09-2022, 08:35 PM   #8
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Quote:
Originally Posted by Saif2018 View Post
Quote:
Originally Posted by Dave92N54 View Post
No.

Part number is: 11117530262

It is below the alternator on the front of the motor, behind all the pulleys.
Ok mate, I've not done it myself, only had the crank seals done at a garage, sorry I can't help much.
No worries. I've since learned how to do the install. Unfortunately need to locate the tool though. Not too keen on spending $170-300 for a tool i'll realistically use once.
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      02-04-2022, 12:15 PM   #9
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Figured i'd post this as i'm finally getting around to this job today

View post on imgur.com
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      02-04-2022, 08:31 PM   #10
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I opted not to purchase the special tool and make do with what I had. Surprisingly getting to and removing the seal was quite easy. I drilled a screw into it and just popped it right out. I've attached a photo of the seal out. Unfortunately I forgot to take a photo once the new one was in.

As for install, things got a little tricky. I decided to use a 2x4 cut to be slightly larger than the seal, and whack it with a dead-blow. This worked well enough but somehow managed to push the top of the seal in a little further than the bottom. I then used a smaller piece of wood to push the bottom portion in a little further.

Just drove it for about 30min and so far, no leaks
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