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Old 01-29-2004, 05:28 PM   #1 (permalink)
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Date registered: Jan 2004
Vehicle: 1995 SL 500
Location: Land O Lakes
Posts: 27
Locks Leaking

Has anyone ever change on their own the locks by the winshield. I think its called the piston seal. The hydraulic fluid is leaking. I think the part is 175.00. Also is the fog lights adjustable and if so how do you adjust it?
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Old 01-31-2004, 01:34 PM   #2 (permalink)
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Date registered: Dec 2003
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RE: Locks Leaking

Fog lights are adjustable with a knob that you can hand turn once the rear cover is removed.
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Old 01-31-2004, 02:29 PM   #3 (permalink)
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RE: Locks Leaking

Thank You
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Old 02-01-2004, 01:30 AM   #4 (permalink)
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Date registered: Jan 2004
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Replacing locks is simple

Won't take you more than 45 minutes. Use a phillips to remove the plastic trim around each of the two openings where the top latches to the windshield. Now the top cover can slide back to expose the hydraulics. What you should find is that the hydraulic cylinder which actuates the lock is causing the leaking. Disassembly from this point should be intuitive. No need to bleed the system when you finish.

Finally, consider talking to Phil at Mercedesshop.com http://www.mercedesshop.com/parts_lobby.htm about purchasing the hydraulic cylinder. He sells them for $125 each. Ask for part #129-800-16-72. Might as well get two of them and do both sides, since these are notorious for failing.
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Old 02-01-2004, 05:46 PM   #5 (permalink)
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Date registered: Apr 2003
Vehicle: R129SL
Location: Miami, FL
Posts: 28
RE: Locks Leaking

My passenger side to latch leaked hydraulic fluid, I tried to fixit myself but I did not repaired it correctly. The latch mechanism did not synchronize while engaging the soft-top. The driver’s side engaged, but not the passenger side.

I had to take it to a very good local Mercedes shop, and they had to balance the hydraulic fluid, I was also missing a small pump & grommet that the latch required.

These cars are not designed for “do it yourself’ type of repairs.
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Old 02-03-2004, 06:17 PM   #6 (permalink)
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Like I said, it's simple...

The hydraulics repair was discussed in a thread by two professional mechanics here, with one of them calling it a "bolt-on" job:

http://www.mercedesshop.com/shopforu...ght=1298001672

Don't be fooled by the complexity of the 129 SL. It is actually a comparatively easy car to work on when you know what you are doing.
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Old 06-18-2004, 09:37 AM   #7 (permalink)
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RE: Locks Leaking

Is the part number #129-800-16-72 for left side or for right side?

Does anyone have pics of how to remove the covers to replace the pumps?

Thanks much.
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Old 06-18-2004, 02:23 PM   #8 (permalink)
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RE: Locks Leaking

The cylinder is the same for left and right side. I don't think you need a picture...Just remove the plastic which surrounds the lock openings in the top of the winshield and slide the entire cover back to remove it.
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Old 06-20-2004, 09:24 AM   #9 (permalink)
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RE: Locks Leaking

Bob,

I am debating between fixing it myself and bring it to the dealer. If I could do it myself, I'd save around $400. On the other hand, if I messed it up, ... man, just don't want to think about it.

You and some others said in the posts that it was a simple job to do. However, one guy said he had to finally bring to the shop to finish the job!

Thanks again for all the info you provided, Bob.
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Old 06-20-2004, 01:51 PM   #10 (permalink)
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RE: Locks Leaking

I don't think it is possible to mess this job up.
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