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SL500 R230 Roof Hydraulic Leaking/Inop.

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

SL500 R230 Roof Hydraulic Leaking/Inop.

 
Old 12-11-2017, 05:20 PM
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Unhappy SL500 R230 Roof Hydraulic Leaking/Inop.

My hardtop wont open and the hydraulics are leaking. I'm trying to have my roof hydraulics serviced by Top Hydraulics but cant get to the actual hydraulics. Should I replace just the main ones? Who has experience?
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Old 12-13-2017, 08:57 AM
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I believe that the R230’s have 11 different roof and roll bar cylinders. Have you determined which one/ones are leaking? Were you going to have them all rebuilt? The one that locks the roof to the windshield is usually the first to go. Do you have much mechanical ability? The front one that I mentioned can be rebuilt without removing it all the way to the pump if you do it yourself. You would get to the others by removing the liners in the trunk.

Where are you located? Maybe someone local could give you some guidance.

Tim
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Old 12-13-2017, 09:34 AM
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You can get to them, you have to manually raise the roof. That's the only way to access them to replace them anyway, might as well open it up and confirm which ones are leaking. The common culprits are the locking cylinders for the trunk lid on each side, and the large single one that lifts the trunk lid/frame backwards. But they all leak, and if you replace one or two, you will often find another one or two leaking now that they are getting full pressure.
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Old 12-13-2017, 11:39 AM
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Thanks guys. Im in San Antonio. Up to this point i've removed the headliner and got to the front lock hydraulic which obviously needs fixing. I'll send that one off to get rebuilt. I'm going to double check the ones in the trunk mentioned. I dont see any other ones that are leaking. Right now my headliners off, the rear roll bar area is taken apart, as well as the trunk area near the pump. Its a pain to get to all of them but I'll get it done and post an update.
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Old 12-13-2017, 07:04 PM
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If you use the repair kit for the top one it's not that bad, if not, you have to remove a ton of stuff to route the lines properly. Had to do one a couple months ago, wasn't fun.
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Old 12-14-2017, 01:11 PM
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Originally Posted by ItalianJoe1 View Post
If you use the repair kit for the top one it's not that bad, if not, you have to remove a ton of stuff to route the lines properly. Had to do one a couple months ago, wasn't fun.
After spending all day taking apart everything I was finally able to remove the front lock cylinder with the entire line. I just sent it over to Top Hydraulics to get rebuilt. I inspected all of the hydraulics/lines and it looks like that was the only one leaking. I hope I didnt miss anything that needs to get replaced/rebuilt. Which ones did you end up replacing? I just bought this car and the top wasnt working at all. Hopefully that fixes the issue. 2005 SL500.
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Old 12-15-2017, 11:33 AM
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Originally Posted by Rob Motorsport View Post
After spending all day taking apart everything I was finally able to remove the front lock cylinder with the entire line. I just sent it over to Top Hydraulics to get rebuilt. I inspected all of the hydraulics/lines and it looks like that was the only one leaking. I hope I didnt miss anything that needs to get replaced/rebuilt. Which ones did you end up replacing? I just bought this car and the top wasnt working at all. Hopefully that fixes the issue. 2005 SL500.
The car I did the top one on got a rear trunk lift cyl and one of the side latches, then the top one. I'm a dealer tech so I've done them on a couple different cars. Always sucks, just have to be super careful not to break any of the old plastic parts.
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Old 12-16-2017, 05:49 AM
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I had the same experience as Italian Joe. If you don’t have fluid at the bottom of the spare tire well, your’s probably aren’t leaking...... yet.

tim
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Old 08-02-2018, 12:17 PM
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I have oil leaking behind the right kick panel. I noticed oil on the connectors of the CAN gateway module on the inside A pillar. Is this where the closing cylinder oil Pools?
Thanks
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Old 08-02-2018, 10:30 PM
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Not typically. It normally ends up in the headliner of the roof. If it gets into the A-pillar then you see signs of it on seals at the side window and windshield header.
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Old 08-03-2018, 02:26 PM
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Thats good info
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Old 08-05-2018, 02:20 PM
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Originally Posted by Rudeney View Post
Not typically. It normally ends up in the headliner of the roof. If it gets into the A-pillar then you see signs of it on seals at the side window and windshield header.
Rodney, Today I put roof up and noticed passenger side leakage on roof coming down dripping on wife in passenger seat, the weather stripping top forward area of passenger window is wrinkling, so it is the locking cylinder you think? Do the lines ever go?
This site say's all I do is cut line? But will it not leak all the fluid while I wait for cylinder?

http://www.cabriolethydraulics.com/p...-roof-lock.php

Last edited by cadbob; 08-05-2018 at 04:37 PM.
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Old 08-05-2018, 10:21 PM
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Yes, it is an indication that the front lock cylinder is leaking. I repaired mine about a month ago. See this thread. https://mbworld.org/forums/sl-class-...ng-repair.html

another member tells of a new "o" ring that is more like the original that can be purchased later in the replies, I suggest using that type when you do yours.
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Old 08-24-2018, 06:39 AM
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1966 W113 230SL 2005 R 230 SL350 (M112 3.7). Selling the W113.
slow A230 roof after topping up reservoir

Yesterday I had the reservoir of my hydraulic pump topped up by an MB dealer. The fluid had been sitting stable at the minimum marker since I bought the car (for months, that is). I did buy a bottle of original MB hydraulic fluid, but never got round to topping up. Was there to sort out another issue, and it was a good moment to let them do the trick with their syringe. Fluid now sits at the max indicator. Since then, the roof is painstakingly slow in both opening and closing. All seems normal, except for being slow - both cycles now take 32 seconds. Any ideas?

Last edited by Frederick NL; 08-24-2018 at 06:43 AM. Reason: typing error
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Old 08-24-2018, 09:32 AM
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The level varies based on the position of the roof and load assist (and the trunk lid, if you have the hydraulic open/close feature for it). I found that the highest level was with the roof open and load assist and trunk closed (Mine does have the hydraulic trunk lid). The lowest level seemed to be with the roof closed, and both load assist and the trunk open. If that was the state when you checked and added fluid, then it might be overfilled. BTW, in case anyone is wondering, to check the level with the trunk lid closed, I used my camera placed inside with a 10 second delay shutter.
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Old 08-24-2018, 11:02 AM
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Originally Posted by Frederick NL View Post
Since then, the roof is painstakingly slow in both opening and closing.
One of my posts from a dozen or so years ago here or on Benzworld refers to a Mercedes dealer bulletin on this issue. It mentions eliminating an air bubble from within the roof hydraulic pump by unbolting the pump frame from the chassis, propping-up one end, and running the roof through a cycle or two. I don't recall which end to prop, so if you wish to try the procedure, locate my old post.

It's my experience that the level of fluid in the reservoir does not affect the speed of roof operation, provided the pump is not starved for fluid, of course.

I recently had a car with a very, very slow roof. Once the roll bar was completely raised and lowered, speed of operation was restored. Perhaps an air bubble had been purged.
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Old 08-24-2018, 02:56 PM
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Thanks, guys. Rudeney: Iíll seek for a picture of the plastic part in itís unblemished state. I get your point. Apart from that, water/spray probably whirls through the engine bay from all directions, not just from above.

(In my W113 Pagoda thereís two drain pipes, from the cowl, that seem to be shaped to deal with under pressure, so as not to suck up air/moisture rather than allowing a down flow).
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Old 08-24-2018, 02:59 PM
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Bob terry: thanks for that. I will cycle the roof, easy pack feature and roll bar a few times (allowing the pump ample time in between to cool down) to see what happens.
Oh - and checked the reservoir: fluid is never above the max mark in any position.
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