SL/R230: Driver Side Drop
Junior Member
Joined: Nov 2019
Posts: 62
Likes: 5
SL 500 r230
It is not just orings. There are teflon washers that can and should be replaced. But there are also parts that are not replaceable as well. For example the green piston seal. Also the valves have metal on metal sealing surfaces at the tips of the pistons. It those are marred or scratched, you can't service that.
In other words: A oring swap is no guarantee for a working valve block. Even if done correctly.
And then of course it still could be your struts leaking internally.
In other words: A oring swap is no guarantee for a working valve block. Even if done correctly.
And then of course it still could be your struts leaking internally.
Last edited by thias; Apr 1, 2020 at 03:37 AM.
Thread Starter
Member
Joined: Oct 2019
Posts: 97
Likes: 18
From: Norfolk Va
2003 SL500 1991 190E 2.3 2011 ML350 1998 SL500
No leaks of any hydraulic fluid. I’ve decided to rebuild valve blocks. Have some time on my hands and pretty sure this will correct problem.
will order new orings and Teflon washers. Car is 2003 and may not need new Teflon washers but not worth the chance. Mercedes changed to another washer in 2004/2005 Using my hydraulic hose disconnect tool on my key ring so may as well get my dollar per use value down, as this was a pricey little tool which really helps removal of rear valve block. Thank you all for your help Give me a couple of weeks and I’ll post results. Painting porches on house as well. Love my car and the porches are looking great as well!
will order new orings and Teflon washers. Car is 2003 and may not need new Teflon washers but not worth the chance. Mercedes changed to another washer in 2004/2005 Using my hydraulic hose disconnect tool on my key ring so may as well get my dollar per use value down, as this was a pricey little tool which really helps removal of rear valve block. Thank you all for your help Give me a couple of weeks and I’ll post results. Painting porches on house as well. Love my car and the porches are looking great as well!
Thread Starter
Member
Joined: Oct 2019
Posts: 97
Likes: 18
From: Norfolk Va
2003 SL500 1991 190E 2.3 2011 ML350 1998 SL500
Logged on to diybenzrepair and noticed that they rebuild valve blocks as well as sell the kit for diy
Think it may be wise to have them rebuild valve blocks. I am pretty meticulous but someone that does this many times may be best
Opinions please!, Thank You!,
Think it may be wise to have them rebuild valve blocks. I am pretty meticulous but someone that does this many times may be best
Opinions please!, Thank You!,
Senior Member
Joined: Nov 2019
Posts: 347
Likes: 86
2005 SL65 AMG
I have no idea at this point who is at fault, and still hope to fix this by flushing fluid from the bleed valves.
just a heads up....
Member
Joined: Sep 2013
Posts: 157
Likes: 33
From: Walpole, MA USA
2004 SL500
The most difficult aspects of the job, for me anyway, was the removal and reinstallation of the assembly. The actual changing out of the o-rings and backup rings was the easiest part of the job.
Senior Member
Joined: Nov 2019
Posts: 347
Likes: 86
2005 SL65 AMG
I find getting the hoses back into that stupid rubber clamp/holder thing by the rear wheel by FAR the hardest part of the job. I despise that thing lol.
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Junior Member
Joined: Apr 2017
Posts: 33
Likes: 3
2003 Mercedes sl500 & 2012 C300 4matic
The teflon O rings simply hold the nitrile O rings in place so they don't "roll over under pressure", they don't seal anything. Be careful when you "seat" the new O rings and don't have them inside/out. I tried the higher up before turning car off also. It didn't help. One Control valve works the different heights, the Lock valve simply "locks" your car at whatever height you had when you turned car off. It simply doesn't let the fluid in the system leak back to the tank and depressurizing. Make sure you clean the solenoid well, exp the spring loaded one. Clean the plunger and spring. The plunger needs to "seat" closed after you turn the car off. The spring does that job. Either stretch the springs out slightly or get new ones. Be careful when installing the Lock solenoid to make sure the spring stays in place. Use hydraulic fluid liberally to make putting it back together slide in easier. Doing that front and rear stopped my sagging. Mine was mostly the front and rear passenger sides that sagged. No more after a rebuild, flush and rodeo. Good luck.
Thread Starter
Member
Joined: Oct 2019
Posts: 97
Likes: 18
From: Norfolk Va
2003 SL500 1991 190E 2.3 2011 ML350 1998 SL500
Well want to reply with results
Rebuilt front and rear valve blocks
This took care of left side sagging
Still have a White ABC warning light
This is a problem Car doesn’t drive correctly
Will take it to the shop to find out what’s going on
one Rear hydraulic hose was a bear to reconnect
Metal oring in female connection had to be reinserted in its groove
before hose could be reconnected
Thanks all for your help
Rebuilt front and rear valve blocks
This took care of left side sagging
Still have a White ABC warning light
This is a problem Car doesn’t drive correctly
Will take it to the shop to find out what’s going on
one Rear hydraulic hose was a bear to reconnect
Metal oring in female connection had to be reinserted in its groove
before hose could be reconnected
Thanks all for your help
