BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)


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      02-22-2018, 09:29 AM   #1

Drives: 08 135i
Join Date: Apr 2005

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Rear Main Seal Tool

So, while I 'll be replacing my clutch this weekend I'm going to be replacing the rear main seal. No matter how compliant you are with maintenance, when you turn your back the car will shit on you. Anyway, What's the most popular go to tool I can use or rent that'll will remove and install the seal properly?
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      02-22-2018, 04:59 PM   #2
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Drives: '08 128i
Join Date: May 2016
Location: Orlando, FL

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2008 BMW 128i  [5.00]
2014 BMW 528i  [5.00]
Not sure if our cars need some special gadget but here's what I used for the differential output flange seals. Literally just a 'seal remover tool', I got it for $7 at Harbor Freight.

To install the seal just use a bearing/race press kit, or a socket thats sliiiightly smaller than the overall diameter of the seal.

Take note of the depth of the old seal. I don't know if there's a lip that stops it, but on my diff there was not, and I ended up pressing the seal too deep, thus ruining it. You may wanna buy 2 seals, and return 1 if you successfully press the first one in.

edit: SCRATCH THAT doesn't look like that's the proper technique. Check out this video


My 2008 128i - Sparkling Graphite/Beige - Sport pkg - 6MT - Click me!
Parents' 2014 528i - Mineral White/Ivory White - fully loaded
Instagram @128i.6MT

Last edited by desertman123; 02-22-2018 at 05:06 PM.
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