Date: Fri, 21 Feb 2014 09:35:55 -0500
Reply-To: Steve Cotsford <cotsford@AOL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Steve Cotsford <cotsford@AOL.COM>
Subject: Re: Changing the Black O Ring On a Cylnder Sleeve...
In-Reply-To: <uxrtrldwryr4sfaikfxyp67j.1392962610579@email.android.com>
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Well you have the 3D model in front of you and can see things more clearly for sure. I have a feeling however that Ben would not suggest it if it does not work but maybe he has a trick.
If the piston is at top dead center before moving anything, then there is the entire stroke of the piston that the sleeve could be raised before a piston ring would become disengaged, probably a little more. I would have thought that moving the cylinder that much would get the black ring to a position where it can become disengaged and removed with perhaps something like a dentist's tool. Then again, I do not know the stroke of a 1.9 or a 2.1 and certainly having the engine out and on a stand or at least having the cylinders oriented vertically must make things much clearer and easier.
Perhaps having the engine out is in fact the key to the whole issue ?? I would be guessing but I think that is what Ben would say.
Wishing you all the best. Steve
On Feb 21, 2014, at 1:03 AM, Jeff Stewart <fonman4277@comcast.net> wrote:
> I saw that too Steve. The problem is it doesn't work. I had the piston at top dead center, and still the sleeve won't come out far enough to get the old gasket out, that's the important part. Trust me, I'd love to see somebody do it with the engine in place! Jeff
>
> Steve Cotsford <cotsford@aol.com> wrote:
>
>> If you look at the Canadian articles you will see pictures where the black O ring is pulled up and over the outside of the cylinder. The piston starts off being fairly close to the top of the inside of the cylinder (TDC) before the cylinder gets pulled up just a small amount. The piston should not therefore be far enough out to release the lowest ring. Then the new O ring is pushed down over the outside once again without moving the piston lower. This means doing one cylinder at a time as the other piston has to be close to the bottom of its cylinder. Once the first cylinder has been done, the cylinder with the new O ring is installed in its lowest position and then the piston positions can be reversed, allowing the second O ring to be replaced.
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>> Steve
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>> On Feb 20, 2014, at 10:04 PM, J Stewart <fonman4277@COMCAST.NET> wrote:
>>
>>> I'm guessing impossible without pulling the sleeve all the off the piston. I tried it on my spare engine, on #2 (#1 sleeve is already off) and by the time I pulled the sleeve out far enough the lowest ring had popped out. I tried this before doing on my engine that is still in the van with the right head off. I've heard differing opinions about the need to replace that O ring. Thoughts? Personal experiences? I'd love to hear them! Thanks!!
>>>
>>>
>>>
>>>
>>> Jeff Stewart
>>
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