Join Date: Mar 2010
Vehicle: 2000 SLK230 Kompressor
Other Toys: 2001 Land Rover Disc., 2008 Land Rover LR2 , 2006 Pro-line 36' Sportfish, 1981 Piper Comanche Twin
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Hydraulic pump for roof won't prime
Having difficulty after repairing my hydraulic cylinders. Before I started the job, I noticed that the pump reservoir was empty. I filled it to the indicated marks in order to engage the roof to the halfway point to fix the cylinders.
After completion, I hand-lowered the top into the trunk and then after starting the car with the parking brake on, pressed the button to engage the top to close it. After a few seconds it finally began to lift the top. When it reached to closed point, I noticed that the small wing windows would not engage and close in order to complete the roof operation.
When I tried to let the top back down, there is apparently insufficient fluid in the top cylinder to release it. I could see the top trying to gently pull back but the top latch was apparently holding it so I stopped. I then tried to close it all the way again to complete the cycle and the button flashes but will not engage the roof.
I now have a condition where the button simply flashes and if I push it in either direction, I get no movement.
Anyone experience a problem like this and if so, any ideas how to correct it? I know the pump is supposed to be self-priming, but with all the cylinders positioned above the pump, I can't see where the air can be displaced by the hydraulic fluid.