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-   -   e53 4.8is Front Drive Shaft Help Please? (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/109695-e53-4-8is-front-drive-shaft-help-please.html)

Russianblue 02-10-2019 05:08 PM

Damn, this is a real shitter of a problem. Bad CV shaft leads to replacing the diff. Sorry you had to go through this bro. You have my sympathies!

brucemillar 02-11-2019 09:54 AM

Quote:

Originally Posted by Russianblue (Post 1154836)
Damn, this is a real shitter of a problem. Bad CV shaft leads to replacing the diff. Sorry you had to go through this bro. You have my sympathies!


It's not good, that's for sure.


I still don't know what has allowed the internals to drop/come loose inside the diff casing? has anyb0dy got any ideas what could have gone wrong?



Without knowing that we could be loosing a diff that is perfectly serviceable. What holds the planet gears in their place inside the diff? is it molding or a bracket?

andrewwynn 02-11-2019 11:47 AM

Actually I thought I read a service note about never removing both CV at the same time or the dif gears might fall out of place. Not exactly sure how you are supposed to install the first time. You might be ok have to remove dif just to get everything back in place.

wpoll 02-11-2019 03:42 PM

Here's a picture of the front diff opened up...

https://www.bimmerfest.com/forums/at...0&d=1403714169

(Image from Bimmerfest)

It looks like the differential gears (which are not actually planetary gears) are supported in place by the output bearings (the tapered needle rollers)... :dunno:

andrewwynn 02-11-2019 06:54 PM

It looks like the cage that holds the main gear is broken. I think you can just replace the cage or the center gear and cage. I've seen sites with individual pieces of the differential and I would try to fix It. (Unless there isn't much cost difference). The thing is you have to remove dif either way so there is not a lot of diff(erence) in the time to pull it and take a peek other than if you are trying up a lift.

wpoll 02-11-2019 08:00 PM

I love that in the pic I posted above, you can see the end of a drive shaft and the c-clip sitting on the bench between the gear cluster and the housing... :yikes:

That must have taken some force…. :wow:

brucemillar 02-11-2019 08:02 PM

Quote:

Originally Posted by andrewwynn (Post 1154916)
It looks like the cage that holds the main gear is broken. I think you can just replace the cage or the center gear and cage. I've seen sites with individual pieces of the differential and I would try to fix It. (Unless there isn't much cost difference). The thing is you have to remove dif either way so there is not a lot of diff(erence) in the time to pull it and take a peek other than if you are trying up a lift.



It looks tonight like we will replace the diff. Partly due to the rarity factor of these things. I need to makes sure I do not lose the one I am attempting to buy. I may not easily find another. Then there is the time and effort to consider.

The car fights me all the way. My health is poor (Cancer) and I cannot do my own spannering anymore ,well at least not on this industrial scale, so I need to pay to have these things done.

It’s all very frustrating.


Sent from my iPhone using Tapatalk

andrewwynn 02-11-2019 08:08 PM

Sounds like the painful decisions are behind you. Keep the parts from the old maybe somebody can use. I'm sure xo guys will like to see what happened inside. Too bad can't teleport. I would volunteer to take apart the old one just for the experience.

brucemillar 02-11-2019 08:18 PM

It would be great if you could just pop round. But it looks like that it would involve a trans- Atlantic flight.

Your help along Ruth others on here has been invaluable. I thank you for that.

In the small world we live in I switched on my TV the other night and found myself watching “American Pickers” which (unless I have this wrong, was filmed in your current town Racine? The guy who was being “picked” being a local historian and knowledgeable chap about all things Racine.

I really enjoyed that.

bcredliner 02-11-2019 08:30 PM

The diff is a separate unit. The ring gear is bolted to the carrier and drops into the diff case. The pinion shaft is threaded and extends outside of the diff case and held in place by the pinion nut. The gear set is backlashed to correct tolerances. Best practice is to replace the ring and pinion as a set, especially if they have a bunch of miles on them.


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