Level control struts NLA - Mercedes-Benz Forum
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post #1 of 25 (permalink) Old 08-13-2019, 02:42 PM Thread Starter
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Level control struts NLA

Hello All,

I am planning some suspension work on my 560 SEC and in pricing out parts, I noticed that the rear struts for a W126 with level control are not available new or aftermarket (also, of note to some W123 wagon ones are NLA as well).

My question is, has anybody had any experience refurbishing these? Assuming no abuse, the only part that would experience wear is the strut seal and the ball joint.

Granted, they are very long lived, and don't have many moving parts, but I have had to replace a couple in the past that were leaking. I also suspect the ball joint at the end probably has a finite service life as well.

Any insight appreciated.

Thanks,

John
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post #2 of 25 (permalink) Old 08-13-2019, 04:03 PM
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This may fit:
https://www.ebay.com/itm/mercedes-be...IAAOSwVZBdEC1S

There are 3 o-rings inside that if replaced should fix them. There is also a nylon ring but I do not know if that is critical to be replace. The M-100 and W116 forums you can find how to take them apart.

I have not rebuilt them myself yet, but have a couple that I am going to do in the next couple of months. (W116 model)
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post #3 of 25 (permalink) Old 08-13-2019, 08:00 PM
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I'm facing the same situation--I have a 133,000mi 560 SEL parts car, and need replacement struts/shocks on my 320,000mi SEC. I'm hoping the SEL struts will fit the SEC; the parts numbers are different.
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post #4 of 25 (permalink) Old 08-14-2019, 08:25 AM
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All SLS struts for the W126 are the same (SEL or SEC). Have never seen a W126 SLS strut rebuilt. Now that they are NLA, I suppose that may become a trend. Not sure how to open them up. The bottom ball joint was the usual cause for replacement in past - the joints wear out and causes a knocking sound.
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post #5 of 25 (permalink) Old 08-14-2019, 11:01 AM
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post #6 of 25 (permalink) Old Yesterday, 06:32 AM
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Ok, so there is a process for rebuilding the hydraulic ram, but no solution to failed ball joints on the bottom of the ram. MB used to sell just the ball joint separately many years ago. I am guessing someone like Top Hydraulics may venture into rebuilding SLS rams, but the nagging issue of the lower ball joint may still be an issue.

EDIT - sent a note to Top Hydraulics to ask if they have ever considered rebuilding these rams since they are now NLA
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post #7 of 25 (permalink) Old Yesterday, 11:26 AM
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general question: Lets assume one has a leaking SLS ram. They take the car into their local Mercedes dealership for repair. What then happens?
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post #8 of 25 (permalink) Old Yesterday, 12:10 PM
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They will tell the owner the part is NLA and won't service the car. It is what it is. The only option the dealer could offer is to install conventional shocks, which may require a change in rear springs as well.
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post #9 of 25 (permalink) Old Yesterday, 12:17 PM
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post #10 of 25 (permalink) Old Yesterday, 03:15 PM
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Time for one of our knowledgeable members to step forward...
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