A bit of background first. Ive never liked dealing with the hydraulics of brake systems, I have a pretty bad history with them. First time I replaced brake shoes I opened the bleeder valve to compress the cylinders and let air in the system. I then went through several quarts of brake fluid trying to bleed them using the bottle of brake cleaner 1 person method. This didn't work, And I've yet to get it to work. Attempts at 2 person brake bleeding destroyed the master cylinder. I never got the new one bled correctly. Ended up taking it to a shop, where a brake fluid soaked rag caught on fire and nearly burned it to the ground. They did bleed my brakes though.
In 2012 I spent some time at a GM dealership, where I experienced the joys of a power brake bleeder. Hook it up to the master cylinder and crack open the bleeder screws, no bullshit. Now I don't deal with brake hydraulics THAT often, so forking over the cash for a name brand power brake bleeder was out of the cards. So I made one with a universal adapter.
Its rather quite simple. The cheapest, smallest yard sprayer I could find holds the fluid, this part is unmodified except for the removal of the spray nozzle. The adapter is a flat piece of metal with a hole in the center and a 1/4" coupler welded to the top for a fitting. There are two eye bolts on either side with wingnuts. A chain runs from one, under the master cylinder, and up to the other. 2 layers of bicycle inner tube rubber with a hole in the center make up the seal. The wingnuts are used to tighten the adapter to the master cylinder. I can bleed all four corners by myself in no time, and flushing is a breeze.
My Youtube: http://www.youtube.com/user/pfun41#p/a
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