W126 Mercedes - Differential Side Cover Seal and Rear Drive Axle Installation

[@doktorsteen]

Im done with my car now. Thanks a lot for upploading all the w126 videos 👍

[@ryannguyen8001]

I like that you cut the board in the form of the bearing cover. Most people would just tab on the sides to get the cover in.

[@ImpalamansGarage]

Tapping a seal on from side to side is generally a bad idea. I've not had good luck with that.

[@jhermit]

Thank you for the great video, I just did this job and it was very helpful . One tip I picked up from the @MJM's Workshop channel was to use the end of a 3" PVC pipe cover to press the seal.👍

[@unaeruditi]

This was done well and I can follow this vid compared to that other guy who tried to replace his cv shafts in a public parking lot.

[@valparaisosting]

Excellent explanation! I did the same in my euro w123 300d. Now watching the video those axle seems bigger, robust than on the w123 ones knowing that they have almost the same kind of rear suspension

[@ImpalamansGarage]

Yes axles can be different sizes depending on application. My old W210 Wagon had larger axles that the W210 sedan.

[@MrJohnnyblazed]

I did that job before GREAT JOB!!!

[@TrainerTakumi]

excellent work

[@topher68]

great instructions. thanks. i have a 87 420sel

[@ImpalamansGarage]

Thanks!

[@daveyvane]

Any reasn to grease that big bearing before inserting the seal?

[@ImpalamansGarage]

@daveyvane9431 No that is lubricated by the oil in the differential.

[@alvinkitzmann2134]

A couple questions please. In your prior video of rebuilding the CV joint, you showed 2 flat, 4" O-rings and one smaller one. I got where that one went, and one of the 4" flat ones. But there were two flat ones. Where does the second one go? AND... on the end of my inboard CV joint, there is a notch and a drop of paint, highlighting it. Any idea? Does it mate to something on the inside of the differential, like a timing mark?

[@ImpalamansGarage]

I don't know where the second one goes. I didn't use it. I assumed it was a spare in case you screwed up the first one. Everything is working fine and there are no leaks. There is no keying or special positioning required to slip the axle shaft into the diff. (at least not on my car) I'm not sure what that mark is for on yours. It might be something associated with your specific model. I would research it further to make sure. I'm not much help there.

[@gbenz6494]

Question on the rear wheel carrier inner seal? How far IN is the inner seal? Is the seal flush with the wheel carrier opening or is it supposed to be driven in past the wheel carrier opening outer edge? Does the axle can rim edge make contact with the inner seal?

[@ImpalamansGarage]

6:56 - The very outer edge of the seal should be flush with the differential housing. >> Does the axle can rim edge make contact with the inner seal? Unknown but it does not need to. The contact point that is important to keep fluid in the differential is the one made between the shaft of the axle and the inner rubber diameter of the seal. This is the way most ALL shaft seals work. (Ex: Crank shaft seals on the front of an engine)

[@gbenz6494]

@@ImpalamansGarage I'm talking about the inner seal to the wheel carrier, where the rear flanges are turned by the axles. Behind the brake calipers. There are two seals (radial seals) on the rear wheel carrier. You have the outer seal and inner seal and in between all of this you have an axle flange that has two tapered bearings, an outer bearing and an inner bearing. The entire assemble is held by a special slotted nut that holds the assembly in place on the wheel carrier. The rear axles are inserted into the differential but are also inserted into the axle flanges. Again, I'm talking about the inner seal to the wheel carrier

[@gbenz6494]

www.peachparts.com/Wikka/W123RearWheelBearings There is a picture where the inner seal is being driven into the wheel carrier. The factory service manual (FSM) does not specify on how far you are supposed to drive the inner seal into the wheel carrier. I completely forgot to pay attention to the old inner seal so that I could of used that as my reference.

[@gbenz6494]

Come to think about this, the inner seal will probably eventually stop at the inner racing outer edge.

[@ImpalamansGarage]

@@gbenz6494 If you do not have it already, I have some factory service manual documentation on the wheel bearings that have a couple of diagrams that may be of help. Email me and I will send them to you. I've not done anything to the wheel bearings on my 300SD since they are running fine.

[@wernerdanler2742]

Neat job my friend. Did you do the other side? If I still had my 85 300D I'd bring it to you for that. Lol

[@ImpalamansGarage]

I still need to do the passenger side.

[@رافعليث]

🥰👏👏👏👏👏👏👏

[@MmNn-mp3lh]

Your voice same jo biden 😊 go ahead