The term "pressure sleeve" does not match up to anything I have heard...so I don't know which part that is.
I found VW bills's original thread with contact information. http://www.shoptalkforums.com/viewtopic.php?p=573922
I have no issues with getting parts when they are available. My problem with relying on what seems to be NOS parts shipped from Europe is that they are limited....and you can strand yourself for weeks on end trying to get one. I am working to find either (a) a simple and constant source of parts so that one could readily get a seal within a day or two when yours craps out and/or (b) add changes to the existing part that will greatly increase reliability of whatever seal one uses.
I have to think this way about all of the 411/412 parts. Every day...seals like this get more and more rare. Just like front suspension parts....this is a part that if you do not have an operating one....your car will not drive at all.
Also be wary of using the part # k4450. What it descibes...so I have found....is what some seal and hydraulic manufacturers describe as a "K" type sealing ring with an outside dimension of 44.50mm.
If you look at Parker Hanefins seal catalog you will find that a "K" type seal is one that not only seals the inner diamater but also seals the outside of diamter against the cylinder walls.
But....That does not describe seal thickness, material.....or more importantly...whether either sealing surface...inside or outside....is desigend to endure "sliding motion" along cylinder wall or rod shaft.
An example of this is the seal that Parker has a graphic of that indeed shows a seal that is desigend to seal both inner and outer diameter like our piston seal does.....but....in the graphic.....their "K" type seal is a static seal on the outer diameter and a motion seal on the inside against the hydraulic rod. That type will fit our slave piston.....but will not work.
Our slave cylinder has static sealing on the inside diameter and sliding motion sealing on the outside.Ray
Another possible clutch slave solution
- raygreenwood
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Re: Another possible clutch slave solution
RAY,,the pn. k4450,,,,was on my spare slave for my 412,, the outside boot is ,,,made ,,by ,,fag k4450,, like i have ask to google,,,fag k4450,, they show me were i can use this part pn,for différent application,,like the pict, but that stay a suspense,,?????i send you 2 more pict for that,,albert
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Re: Another possible clutch slave solution
Hey Guys, the k4450 is the the protective cap on the slave cylinder. The piston seal is H4435. It looks like the small master seals but bigger... I don't really consider these as NOS older shelf parts, These came from the mfg. are seem like new to me.
The contact was Ms. Christine Hammer FTE automotive Gmbh & CO. KG. [email protected] www.fte.de
They may have starting making the other parts of the rebuild kits? Christine looked up the parts including in the kits and availability then... For some reason I also have a box top from a beck arnley box in my rebuild box with the number 071-7491 says made in Germany. I can't remember if this was the for master seals or a slave cap or seal kit??? If you need the parts let me know. Thx Bill,jr.
The contact was Ms. Christine Hammer FTE automotive Gmbh & CO. KG. [email protected] www.fte.de
They may have starting making the other parts of the rebuild kits? Christine looked up the parts including in the kits and availability then... For some reason I also have a box top from a beck arnley box in my rebuild box with the number 071-7491 says made in Germany. I can't remember if this was the for master seals or a slave cap or seal kit??? If you need the parts let me know. Thx Bill,jr.
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Re: Another possible clutch slave solution
BILL,, in the catalog ,,bearck arnley,, the pn 071-7491,, is for the slave cylinder kit for vanagon 80-91,,albert
- raygreenwood
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Re: Another possible clutch slave solution
The vanagon has a totally different slave cylinder. It is smaller in diameter.....also....bear in mind......a smaller slave cylinder can work if a new push rod is added...only if the stroke of the smaller cylinder is exactly the same length as the larger diameter cylinder.
The problem is that the smaller diameter cylinders have a longer stroke than ours. And...because of that longer stroke and smaller diameter, there is no way to limit the stroke except by limiting the stroke of the master cylinder.
To do so....for example.... in the case of using the early 22.25mm 411 cylinder in a late 411 or 412 in place of the 44.5mm cylinder....you would have to limit the master cylinder stroke to exactly 1/2 to keep from over extending the clutch diaphram and fork.
Two years ago when I started looking at other cylinders as possible replacment (like teh audi cylinder and vanagon cylinder)....I found this problem. The only way small diameter cylinders can be used is if they have teh exact stroke as ours...or if they are used externally with a bracket, fulcrum and adjustable lever. Ray
The problem is that the smaller diameter cylinders have a longer stroke than ours. And...because of that longer stroke and smaller diameter, there is no way to limit the stroke except by limiting the stroke of the master cylinder.
To do so....for example.... in the case of using the early 22.25mm 411 cylinder in a late 411 or 412 in place of the 44.5mm cylinder....you would have to limit the master cylinder stroke to exactly 1/2 to keep from over extending the clutch diaphram and fork.
Two years ago when I started looking at other cylinders as possible replacment (like teh audi cylinder and vanagon cylinder)....I found this problem. The only way small diameter cylinders can be used is if they have teh exact stroke as ours...or if they are used externally with a bracket, fulcrum and adjustable lever. Ray