The two remaining cylinders (of five) that raise the trunk almost never go bad because they were originally designed with the O-rings. Free Hydraulic Pump Refill Instructions For the DIY Repair of all 5 Hydraulic Cylinders that raise lower & Lock your Convertible Top Vario Roof Covers Mercedes SLK Class.R170 Chassis. This is because all three cylinders use a rod seal made of the same material that degrades over time. you will need the replacement O-rings sold on Ebay.īad news, if you are experiencing one cylinder leaking, it is very likely the other two that raise the top will begin leaking very soon. You will rebuild it sitting in the passenger seat. You need to start at the motor/pump/reservoir unit behind the seat and find the leak. The 'oil' thet you see is probably hydraulic fluid leaking from the drain hole in the car near the tire. If you are only rebuilding the cylinder and reinstalling it, it can be done without removing the lines from the car. Your top is moved by an electric motor wich operates a hydraulic pump which moves two pistons which move the top. You must remove the plastic interior in the trunk and disconnect the lines at the pump. If you are replacing the part, the new one comes with the lines attached. The DN3 hoses have a 3mm (larger bore) internal diameter. The DN2 hoses have a 2mm (smaller bore) internal diameter. We offer hoses in two sizes: DN2 and DN3. There have been people who have done it, me, but it requires redesigning the attachment point. Cabriolet Hydraulics supplies new high pressure replacement hoses, also known as lines or pipes, for most convertible top hydraulic applications. The hydraulic cylinder lines are designed to not be removable from the cylinder.
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