SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: Valve Block Kits SL500 (2005)

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Old Mar 17, 2016 | 12:17 AM
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hydrogen's Avatar
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2005 SL500
Valve Block Kits SL500 (2005)

Hi,
I have a problem where the front left hand suspension sinks. You gentlemen on the forum where 100% right its the valve block.

My mechanic here in Australia has located the problem the o rings on the front valve block left solenoid controller are deteriorated.

Is anyone aware where I might be able to obtain a kit for the valve block front left solenoid. If you know a place in Australia that would be great. Here they only sell the whole unit for $4000.00.

Or a US place would be alright if they will send to a mechanic.

Thanks
Gerard
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Old Mar 17, 2016 | 02:23 AM
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leafdude555's Avatar
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E55 Wagon
I don't think there is a kit available. But there is a forum member JNash who does rebuilds of these units.

A cheaper option would be this guy who also rebuilds them
http://www.ebay.com/itm/Mercedes-w21...BWKW4z&vxp=mtr

But shipping from Australia to USA and then back to Australia might not be worth the cost. There are a few valve block rebuild threads that give the exact specs on the O-rings to order.
This webpage also has them, with part numbers of the O-rings. Scroll down to the valve block section.
http://mercedes-abc-drive-carefully.blogspot.com

I had the same suspension sagging issue and decided to buy a used valve block from a low mileage car and just replace it. This way the car has no downtime while valve block rebuild is happening and I can finish the job in one go. I was also able to sell the old valve block to recover some of the cost of the used one I bought from eBay.
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