Ferlee

Hello all, is there a quick and easy fix to level my 2011 R230, 550Sl? Left side is higher then right side.

andetechinc

On the front you can remove, rebuild, and replace the blocking valve that revents sag on that side very easily without removing any hoses. Not sure about the rear.

andetechinc

Just saw a video on swinging the rear valve block assembly out so it can be removed, but you don't have to remove it if you only want to take out and rebuild the blocking valve.

andetechinc

Above are for the R230 as on my 2004 SL500

Velocetta

Thanks!

elMacko

In my humble opinion, age has more influence than miles. The age causes the seal to harden and the rubber to swell and as this system has plenty of these components, the failures will come with the time..! But, if you like the system, rebuild and be happy...!

Velocetta

I own a 03 R230 that shows the occasional red ABC warning for a few seconds. Has anyone had any success finding a company/person who can rebuild the R230 ABC pumps? My independent tech has run pressure tests (mini version of a full rodeo) and has found that the pressure is slowly reducing after a few loading moments in the suspension. I was hoping that it was the accumulators, but he is suggesting that it is the pump. He also says that it is nearly impossible to find new pumps out there. Can they be rebuilt? Who does this kind of work?
Thanks

as.thompson

I bought a rebuilt pump from Zadow in Germany (they specialize in rebuilding SL ABC pumps) https://zaedowautomotive.de/
Good luck

Velocetta

Thanks so much for that reference @as.thompson.

Doug

as.thompson

You are most welcome. I found out about Zadow from list member Tom Manning when I had the same issue on my '05 SL500. Zadow had the correct pumps for every SL model and were very responsive. All has been fine since installing their rebuilt pump. Good luck!

amggtsde

Thanks for the info on Zadow in Germany!! Was delivery from Germany pretty straight forward?

as.thompson

Delivery from Germany was straight forward. Zadow shipped it out by DHL the day after my order. The only hang up was that German Customs held up an air shipment container to do an inspection and that caused a delay. But the pump eventually showed up just fine.

Tom Manning

+1 on Zadow, very good service and quality recon job.