Re: great info - Saab 900 Bulletin Board -

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Re: great info
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Posted by thetallguy [Email] (#1698) [Profile/Gallery] (more from thetallguy) on Sun, 5 Nov 2017 08:59:33 Share Post by Email
In Reply to: great info, Acejed, Fri, 3 Nov 2017 11:16:09
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If you have several then you may wish to take a chance and build your own AID-I started one but got involved in 9000 Aeros and Viggens. However, I did cut one open by scribing a line in the center of the widest part of the cylinder. In other words, cut in the middle of the capsule's widest part just below where the lip was crimped down over the top of the sloping "roof". I chose a hacksaw outfitted with a medium/fine blade and with the capsule clamped firmly in a vise I carefully worked my way around the circumference trying to avoid cutting fully through the metal in many tiny spaces. This way the cylinder wall is supported and the blade does not "bind up" nor the spring jump out and ruin the cut.The interior spring is under tension and will be fighting to push the two haves apart. Once I had it mostly cut I finished up with a dremel cut off wheel. A file will also work here to finish up the job. I ended up with a properly separated capsule while the interior black plastic disk, while slightly touched by the blade remained intact and serviceable-its actually a thick piece of plastic/nylon that is durable. Unless you are using a chain saw for this operation, I am thinking anyone can manage it without damaging the inner part to a degree where it could not be utilized. It can be deeply cut and not affect the jobs success because the cut is well between the seals-about a 1/4 inch to either side. Once the capsule is separated (the spring will assist with this) rotate the black interior disk 45 degrees and every thing comes apart. Swap in the stronger spring and then come up with a method of clamping it all back together-the metal part of the upper capsule sits on a sealing rubber diaphragm. There is a lower rubber seal as well so...all that is required is a clamping force applied to the the capsule halves and you are back in business. Perhaps easier said than done. My thought was to use two different size ABS pipes to create a collar with several holes drilled around the circumference for the "clamping" fasteners or use alloy or steel split collars if you have a lathe. Good luck with this project-I would be interested in hearing about your efforts.

->Posting last edited on Sun, 12 Nov 2017 20:09:43.
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