SLK-Class (R170) 1998-2003: SLK 200, SLK 230K, SLK 320

SLK/R170: Retractable Top Hydraulic Pump -Bleeding?

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Old Apr 25, 2006 | 07:58 PM
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Exclamation Retractable Top Hydraulic Pump -Bleeding?

My 1998 230 SLK rained oil on me one day. It was the actuator in the convertible top that locks the top down. I removed the actuator and replaced the seal in it (cost $0.25 - a new actuator was $400.). I believe I have air in the hyfraulic lines. There are several screws on the pump. I assume one of them is a bleed screw. I ordered the WIS manual on DVD on E-bay but couldn't get it to load on my computer (actually tried 3 computers). Anyone know how to bleed the hydraulic lines?
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Old Apr 25, 2006 | 08:50 PM
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From: Napa , California
2001 SLK 320 , 1970 Chevelle SS
I also got those CD's from Ebay. There no good. The Cd's from mercedes are suppose to come out pretty soon. The phone number where you can get it at is 1-800-367-6372

Ken
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Old Jan 27, 2016 | 08:56 AM
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mercedes clk320 convertible w208
Angry i ordered dvd from ebay,no good!!!

Originally Posted by troyconwell
My 1998 230 SLK rained oil on me one day. It was the actuator in the convertible top that locks the top down. I removed the actuator and replaced the seal in it (cost $0.25 - a new actuator was $400.). I believe I have air in the hyfraulic lines. There are several screws on the pump. I assume one of them is a bleed screw. I ordered the WIS manual on DVD on E-bay but couldn't get it to load on my computer (actually tried 3 computers). Anyone know how to bleed the hydraulic lines?
me and 3 others worked hours on it,and it said disc #4 was bad,they sent me a new #4,another couple hours to install, then it worked intermittently. junk
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Old Mar 13, 2016 | 02:05 PM
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03 SL Kleemann, 97 SL320 pano top, 95 Lorinser E320 Cabrio, Ferrari 360, Tesla X
Originally Posted by troyconwell
My 1998 230 SLK rained oil on me one day. It was the actuator in the convertible top that locks the top down. I removed the actuator and replaced the seal in it (cost $0.25 - a new actuator was $400.). I believe I have air in the hyfraulic lines. There are several screws on the pump. I assume one of them is a bleed screw.
The system is self bleeding. As long as you have enough fluid in the pump's reservoir, all air will eventually be pushed back into the reservoir. If you have enough fluid in the reservoir and the top is moving slowly, then you either have a bad piston seal in the top lock cylinder, or the pump is bad.

There is no bleed screw on the pump. The Allen bolt on top in the forward right corner is the fill plug. The two Allen screws on the side of the pump are valves. The brass colored one is the pressure relief valve for manual operation. Make sure it is closed, but do not over-tighten it.

Please let us know if you run into any further problems.

Klaus
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