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Thread: Block Off Plate in Oil Pan? N52 Axle Leaking

  1. #1
    Join Date
    Jun 2020
    Location
    Cambridge, MA
    Posts
    15
    My Cars
    07 BMW X3

    Block Off Plate in Oil Pan? N52 Axle Leaking

    I'm scratching my head trying to figure out an oil leak on my 07 E83 X3.

    I thought it was the oil seal where the axle crosses through the oil pan (what a crazy design!!). However, I have the axles out, and I'm still getting a leak.

    I have two hypotheses
    1) It is the gasket on this block off plate leaking, more info below.
    2) It is the oil pan gasket just above the axle. However, the pan gasket was replaced 20k miles ago by a good shop, so I find this unlikely.

    The thru-hole has a CV carrier block that mounts to it, and then the axle goes through. So I re-mounted the carrier block, which has an O-ring for the thru-hole which I thought was causing the leak. Torqued it down, left it for 4 days. After 4 days, I still have the leak, so that tells me it is not the CV carrier o-ring.

    I've attached pictures, welcome your thoughts.

    https://www.dropbox.com/s/bzyoq984n2..._1020.JPG?dl=0

    https://www.dropbox.com/s/275xiuf6vj...81%29.jpg?dl=0
    Last edited by benzor; 06-05-2020 at 11:19 AM.

  2. #2
    Join Date
    Jan 2016
    Location
    Ca
    Posts
    6,981
    My Cars
    2001 525it
    As I recall the plate does not have a gasket you could check by going to reloem.com enter the last seven of the vin go to section 11 for oil pan picture you could reseal it with like etc or Honda bond or Mbz type sealer.

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