We have a 1999 slk mercedes it had a leak from the convertible top. Took it to a dealership they said the hydrulic pump was bad . had it replaced for 1,200.00 . Had that done a month ago got to pu the top down for the first time the other day and had the same leak as before. The dealership is trying to say it is something else, but the leak is in the exact same spot . What is your opinion? Thank you .
Sarah
The pumps rarely need replacing.
SLK top leaks are almost always caused by one (or more) of three hydraulic cylinders in a system of five cylinders. These three are the small latch cylinder located under the headliner, and the two larger cylinders that raise and lower the top located just behind both seats. The rod seals in all three are made using a proprietary material that is designed to break down over time. The other two cylinders in the system that raise and lower the trunk almost never go bad. This is because they are designed using the time tested Nitrile rubber O-rings, not the Novathan material that are in the other three.
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.
Mark Andrews
how do you grease the mechanical pivot points
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Hi,you mention that hydraulic pump was replaced ,again same pump was leaking,it is a brand new part,you can claim as warranty part,your vario roof hydraulic system consist of 5 hydraulic cylinder and 1 hydraulic pump,hoping your authorize dealer explain more elaborate,ty
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