Question about 2001 Mercedes-Benz SLK-Class

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Slk 230 Hard top has leaking hydraulic fl. I have found the cylinder that is causing the problem under the headliner. How are the lines disconnected to put new cylinder on.

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The hydraulic cylinder lines are designed to not be removable from the cylinder. There have been people who have done it, me, but it requires redesigning the attachment point. Not for the novice. If you are replacing the part, the new one comes with the lines attached. You must remove the plastic interior in the trunk and disconnect the lines at the pump. If you are only rebuilding the cylinder and reinstalling it, it can be done without removing the lines from the car. You will rebuild it sitting in the passenger seat. you will need the replacement O-rings sold on Ebay.

Bad news, if you are experiencing one cylinder leaking, it is very likely the other two that raise the top will begin leaking very soon. This is because all three cylinders use a rod seal made of the same material that degrades over time. The two remaining cylinders (of five) that raise the trunk almost never go bad because they were originally designed with the O-rings.

Costs:

-New cylinders run $300 to $400 apiece
-About $40 to $60 to have your cylinders rebuilt, apiece
-Around $10 to $20 to buy the O-rings on Ebay

Mark Andrews

Posted on Aug 16, 2009

  • roger Jul 14, 2013

    where can you get the hydraulic cylinders rebuilt

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Posted on Jan 02, 2017

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A+ auto tops & upholstery. Can repair then for a great price. They are in Indian Harbour beach. Apluseautotops@gmail.com

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Also, the SLK hardtop mechanical pivot points are notorious for needing to be greased every couple of years. When they stick, it seams as the pump does not have enough power to raise the top. Some times the pump gets blamed for symptoms that pertain to other problems.

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