I don't think you'll find any kind of instruction guide for that.
On many old cameras, the bellows is attached to a wooden frame at either end, and the frame is screwed at the front into the lensboard frame and at the back into the filmholder carrier frame. You just need to remove the screws, and it comes out, and then you can send it to a company like Camera Bellows UK, which I've used, and they will build a new bellows on the old frames, and they can make new frames if the old ones are damaged. If you're ambitious, you can also try building your own bellows.