BMW E46 M3 Differential Seal Replacement DIY (BMW E90 M3, E60 M5, E63 M6)

Рет қаралды 20,316

Күн бұрын

►The differential pinion seal is a notorious leaker in the BMW E46 M3 and on other M-cars with limited slip differentials. A leaking seal, other than causing a mess, will drain your differential of its lubricating oil. Replacing the pinion seal is the only way to fix the leak and ensure the health of your M differential.
The original pinion seal was poorly designed, so the engineers over at Corteco have redesigned it to fix all of its shortcomings. Fitting the improved seal will take a decent amount of tools, including a few specialties, but replacement can be done in a DIY setting with enough patience.
Follow along as Gareth Foley, FCP Euro's BMW Wizard, walks us through a differential pinion seal replacement on a BMW E46 M3.
00:00 - Intro
01:05 - Tools Needed
02:46 - Job Start/BMW E46 M3 Reinforcement Plate Removal
03:14 - BMW E46 M3 Exhaust Removal
04:43 - BMW E46 M3 Drive Shaft Removal
06:57 - BMW E46 M3 Pinion Flange Removal
09:20 - BMW E46 M3 Pinion Seal Replacement
10:24 - BMW E46 M3 Pinion Flange Install
12:27 - BMW E46 M3 Drive Shaft Install
15:12 - BMW E46 M3 Exhaust Install
17:51 - BMW E46 M3 Reinforcement Plate Install
18:16 - Wrap-Up
Buy This BMW E46 M3 Pinion Seal Here: www.fcpeuro.com/products/bmw-...
Buy Tools Used Here:
Pinion Flange Counterhold - www.fcpeuro.com/products/bmw-...
Pinion Flange Installation Tool - www.fcpeuro.com/products/bmw-...
Pinion Flange Adapter Tool - www.fcpeuro.com/products/bmw-...
Pinion Seal Driver - www.fcpeuro.com/products/bmw-...
Pinion Flange Nut Driver - www.fcpeuro.com/products/bmw-...
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Пікірлер: 25

@964tractorboy Жыл бұрын

Another great video, I agree. Always interesting to see how much more involved a seemingly "simple diff-seal replacement" turns out to be. Thanks Gareth. Love the E46 M3 content.

@1b9e7n3z Жыл бұрын

Thanks for the great video you do, very technical and professional, you are a great team there,

@MEMcAndrews 9 ай бұрын

Great video! They always are. Very helpful for my diff rebuild project. You didn’t show the preload as specified for the drive shaft center bearing.

@hoss1988 Жыл бұрын

Great video! Like I was able to do this on my E90 M3 easy, I did use a 3 Jaw harbor freight puller but it all went back together way easy… used a tape roll around the seal to tap it in just tap tap it in. Otherwise no special tools… my car was on ramps so wheels being planted that kept the thing that spins from spinning somI was able to get it off in the air you would need that holder do Hickey

@MarioDallaRiva Жыл бұрын

Bravo! 👏🏼👏🏼

@duracellttu Жыл бұрын

Great video! Curious to know if the pinion seal driver is the same tool that can be used in the differential output seals as well. Are they the same size?

@acsbimmer Жыл бұрын

Could you use the 32mm socket to get the retaining ring back in?

@UtRxChocolate Жыл бұрын

Hoping to take this on as a weekend project at my local DIY mechanic shop. Anyone have a good idea of how long this should take for a novice DIYer?

@kennywebster8765 Жыл бұрын

Hi, I'm looking at doing this job in the near future but looking at the three exhaust muffler hanger nuts/studs they are totally rotten on my motor and looking at them I am going to struggle to remove them without destroying them. Have you any ideas on to remove these at all? Any help will be good. Thanks, Kenny in the UK

@kristianeekhof8128 Жыл бұрын

Nice video's guys. But please be kind to your engine mounts and support the gearbox when removing the bracket and clean the surrounding area when putting in a new seal..

@commentator2.0 Ай бұрын

Thanks for this DIY. I learned that using will not DIY this and pay someone instead 😂

@fcpeuro Ай бұрын

😂😂😂

@Vass046 Жыл бұрын

Bit of a point of confusion when doing any sort of driveshaft job but doesn't the center support bearing require preloading by pushing it towards the front of the car and then bolting it down? Have read about it in a few repair manuals but haven't found a decent video explaining it properly. I'm this close to video you seem to just bolt it on as it is. Would you be able to shine any light on that? Thanks

@Crashdown456 4 ай бұрын

I bought the seal driver but I’m worried I drove it too deep. Is that possible to do with the special tool?

@tteitei Жыл бұрын

Hi. Really like the day videos. Was hoping you could do one on a n55 oil pan gasket replacement on a f22 or f30? I know you guys have done videos on the oil filter housing and valve cover gasket but none on the oil pan which is a common oil leak on these engines.

@fcpeuro Жыл бұрын

Great suggestion!

@JakeHart-pf4jj 4 ай бұрын

2 jaw puller didnt work so i have a problem. Seams as the tightening nut to back the shaft out is to short

@idonjohnson6999 Жыл бұрын

"notorious leaker" I had no idea. Mine leaked when I bought the car. Replaced it, was good for some years, then started leaking again. I doubted the hole would become 'not 100% round" since it's hard metal...The one you are selling is much cheaper than BMW's as well. Any Euro distributers for FCP parts? Wonder why it's not listed for the 1996-1999 E36 M3, as the Euro spec uses the same 210 diff. Does the BMW Pinion Seal Driver tool also work with the upgraded seal? I see it has a different shape, so useing this tool might not set it at the correct depth.

@idonjohnson6999 Жыл бұрын

I have no clue how that pinion flange driver/tool, which looks to be designed byNASA works. It's been 10 years since I replaced that input seal, but after that was installed, the pinion flange just slit onto the splined shaft. No need for a tool to press it on!?

@DonBMW Жыл бұрын

Do you really need $600 of tools to replace a $15 seal? I'm kinda broke and need to replace this pinion seal.

@SavageBunny1 Жыл бұрын

You can buy the seal, then go to a metal supply store and try and make something that looks like that tool, I do that all the time with bushing presses.

@DonBMW Жыл бұрын

@@SavageBunny1 Thanks! Just finished this job. I ended up using the metal cone from a bearing press tool to drive the seal in. Did not have to use any special tool to remove the flange. To hold the flange screwed in two screws and held w my pry-bar to torque down.