Seals for top lock cylinders, merged with Nailed

[lynns]

There are a total of 11 cylinders that store the soft top and 1 for the roll bar.
$3,896.00 MSRP parts only total from Parts.com . This does not include tax, ship, and R&R labor.
May I suggest that you contact Dennis Ficken and ask the cost to rebuild yours.

You need either of these tools plus heat to rebuild 129800 1772 (left) and 124800 0272 (right)

Please read seal dimensions photo

IDxODxt--Seals
6x13x5----6 each
6x10x4----2 each
17x22x5---2 each
9x14x5----2 each

Diagram#--Parts#-------Seal ID--Seal OD--Seal t---O-ring ID--O-ring OD
---------------------------------------------------------------------------------------
2----------- --2172-----------6mm---13mm----5mm-----13mm------16mm
3----------- --2172-----------6mm---13mm----5mm-----13mm------16mm
5----------- --2072-----------6mm---13mm----5mm-----13mm------16mm
9----------- --1772, 0272----6mm---10mm----4mm-----10mm------13mm
9----------- --0272----------16mm---22mm----5mm-----29mm------33mm
10------------1672------------9mm---14mm----5mm-----13mm------16mm

Please refer to Seal & O-ring dimension for the hydraulic cylinders.

The p/n's below where found at The Russian Parts site.

2 = 129800 2172 , $142.00 each US MSRP locks for tonnau cover (1-2 each)
3 = 129800 2172 , $142.00 each US MSRP locks for bow (2 each)
5 = 129800 2072 , $240.00 each US MSRP tonnau cover actuator (2 each)
9 small/upper cylinder = 129800 1772 (left) , $760.00 US, 124800 0272 (right) , $454.00 US
9 large/lower cylinder = 129800 0272 , $670.00 US MSRP main top actuator
10 = 129800 1672 , $147.00 each US MSRP or aftermarket p/n O7049-163985 front cylinder locks (2 each)

p/n 1298001448 for 1999 and up SL pump

[fredej]

Hey there Hogie!
I too am new to this site, but I’ve put in a little time on my SL, and just last week I R&R’d the hydraulics on my soft top. I was going to repair them myself, but I could not find any seals like the ones that came out of the pump, so I abandoned the mission.

The hardest part was removing the Constant Pressure Ring holding the cylinder in. Anyhow I have dissected the top roof locking pump and have attached a picture to this post. Hope this helps you!

Also, I would be interested in obtaining the seals for these pumps, so if anyone has a good connection please let me know!

Good luck!

[GUSMB]

Anyone found matching seals for the hydraulic cylinder latches that lock the soft top/hard top in the front?

Really easy to take the cylinder apart, ordered a seal yesterday, but not exakt fit, might leak. A new cylinder is about $210 in Sweden, a seal is about $10.

The cylinder axel is 9 mm, the surrounding about 14,2 mm.

Haven't seen anyone repair theese yet, might have missed it, just the rear ones.

Anyway, if it works with the one I ordered I will post it, but information would be nice if anyone has...

Cylinder:


Fitted here:


Taken apart:


The seal:


More pictures:
Taklås 080723

[lynns]

Please see line #7 and #8 at http://www.benzworld.org/forums/r129...-ultimate.html
If need be try 'PMing' the guy that did the write up.

[GUSMB]

Thank you, good information, but I don't have a problem with anything else then actually finding the seal. Will not send them to US for repair, even though Dennis charges like nothing to do it.

Well, ordered one seal which is a little bit oversized, think I will have it on monday.

[lynns]

Originally Posted by GUSMB

Thank you, good information, but I don't have a problem with anything else then actually finding the seal. Will not send them to US for repair, even though Dennis charges like nothing to do it.

Well, ordered one seal which is a little bit oversized, think I will have it on monday.

Check out
O-Rings, Inc. Since 1958 - Buy Online
Smallparts.com - The Hardware Store for Researchers and Developers

[GUSMB]

Yesterday the seal arrived, not exactly the same, would guess this one is better:


Fitted in the end of the cylinder:


In goes the axle:


Hardest part was getting the locking ring there:


No rocket science mounting it:


In place:


Roof down:


Roof up:


Been running the rollbar up and down, taking the roof up and down about 10 times, no leaks, seems to work. The Price would be 140 SEK, about $24 for both sides, compared to about 2500 SEK or $420 at MB.

More pictures:
Taklås 080729

[lynns]

Originally Posted by GUSMB

Yesterday the seal arrived, not exactly the same, would guess this one is better:

Fitted in the end of the cylinder:
In goes the axle:
Hardest part was getting the locking ring there:
No rocket science mounting it:
In place:
Roof down:
Roof up:

Been running the rollbar up and down, taking the roof up and down about 10 times, no leaks, seems to work. The Price would be 140 SEK, about $24 for both sides, compared to about 2500 SEK or $420 at MB.

Thanks for the excellent write-up. Now here are the questions.

Which year 600 did you do?
How many miles on the car?
As far as you know is this the first repair of the front HC's?
What compound did you choose for the replacement seals?
Have you renewed your hydraulic system fluid?
What are your thoughts on renewing the fluid and it possibly adding to the longivity of the seals?
Why do you think the front cylinders are the first to go? Why not the back seals?

[GUSMB]

Originally Posted by lynns

Thanks for the excellent write-up. Now here are the questions.

Which year 600 did you do?
How many miles on the car?
As far as you know is this the first repair of the front HC's?
What compound did you choose for the replacement seals?
Have you renewed your hydraulic system fluid?
What are your thoughts on renewing the fluid and it possibly adding to the longivity of the seals?
Why do you think the front cylinders are the first to go? Why not the back seals?

The Car is a -94 and has about 65000 Miles on it. My -93 with has more then 16 000 Swedish Mil (about 10 000 miles) on it still hasn't had this replaced. But the -94 is from Florida, guess the roof would be used more there then in Sweden.

I think it is the first repair, really can't tell.

I don't know the compound, some kind of rubberlike, the original is more plasticlike.

I have not renewed the fluid, was thinking about it, but spoke to the guy who sold the seals, old hydraulic mechanic, the type that repairs stuff, not replaces. When I asked about seals and different kind of fluids he said, you are using industrial standard seals now, not vehicle specific crap. For that kind of system theese seals will work with just about anything that flows was his answer. But since there are more sylinders in the system with more the original seals, I really don't know. But anyway, I will not replace the fluid.

Was trying to figure out why the front ones did go out first, can't really think of anything then maybe it is the cylinder itself. It is a tiny piece, maybe the seals have a harder life then the rear ones.
My only thought is that MB should have bought cylinders from some other company, standard ones instead of making their own. Would not be a problem to replace this with a industrial one with the same stroke.

[GUSMB]

Replaced the second one yesterday, added 2 dl fluid, been testing the system about 20 times, no leaks, mounted all the panels and stuff, let's see if it lasts.

Anyway, for the price and the work involved, I would gladly replace theese every 2-3 years instead of buying new ones.
BUT, I have no intention of replacing them again, I believe this will work.

One thought though, when losening the cylinder from the lock itself you need a 7mm spanner, the cylinder will get some small marks from the spanner. This is of no concirn for the functionality since the damaged part of the piston is outside the cylinder all the time. But when pulling the cylinder apart you will scratch the plain shaft bearings. Probably nothing to worry about since it is a low pressure system and there is not really much work for the cylinder to do. But if I were to do this again, i would grind the damaged area a little bit.