Dodge drum brake cylinder replacement

Dear Sirs:

I still have my 1988 Dodge Omni (140 k), which I will likely only have until the end of the year tops, and only driven a handful of miles a day through mostly side streets. I have confirmed one of the rear drum brake cylinders leaking. I really do not want to let that go, although I do not know how long it has been leaking. Based on my visual inspection, it could have been quite a while already without detection. It is not worth spending any more on it in a repair shop.

It has been a long time since I worked on drum brakes, and there is no way I am going to disassemble the whole thing. I would like to know if the cylinder can be replaced without disassembling the rest of the brakes. In looking at the design, even if the brake shoes would normally contract upon cylinder removal, it seems like there could be a specialized tool or way to hold and/or keep the shoes expanded while just replacing the cylinder. Any suggestions would be appreciated. Thank you very much.