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Making a pressure brake bleederI just finished bleeding the brakes on my '68 and it was made simple by the use of a home made pressure bleeder that I made from a 1 gallon sprayer. I have found that bleeding the rear brakes on my cars in the past was very difficult even with my wife pumping the brake pedal while I was using the Mityvac.
Well today I decided to build a cheap/simple brake bleeding machine. I took a new 1 gallon sprayer, a half gallon sprayer would work a bit better and be easier to store but I couldn't find one, fitted a cheap pressure gauge to the upper side of it, and then used a couple of brass fittings and a piece of tin from a can to fit inside an old brake bottle cap. After attaching this to the line from the sprayer gave me a way to pressurize the system.
With the brake bottles full and a hose attached to the bleeder valve I pressurized the system to about 5 psi, I wouldn't go much more that 5 psi because of fears of blowing something up-the repro bottle/old cap seemed to work well but people have expressed concerns that the repro bottles wouldn't keep the cap on-mine worked fine. Once the system was pressurized I opened the bleeder valve and it worked as advertised.
The cap was the only thing that required any finesse at all, I took apart an old one that was left over from the restoration, the cap will come apart by removing the 'nails' that hold the nylon pieces together and then you will be left with the cap that looks like a mason jar lid, I kept all the parts but used only the cap and the rubber seal. I took a piece of tin from a can, cutting it to size with tin snips made it fit inside the cap, then I drilled a hole in it to allow the brass fitting to fit snugly, then held it in place with a female fitting that I could screw down against it from the inside. It leaks a bit but made an adequate seal for the purpose at hand.
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[ 1 1 ]
The hose fits over the male brass fitting (the !!)
The (1's) are the nut on the inside of the cap.
This could be set up with fluid in the sprayer tank but I wanted to keep it simple and I just refilled the reservoir buy letting off the pressure and adding fluid as it would run down.
If anyone would like pictures or details contact me off line and I'll show you how simple it is.
Cheers,
Lynn
By Jagjunke at 05/22/2007 - 5:31pm | technical | Jagjunke's blog | login or register to post comments
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pressure brake bleeder
Please send photo and plans for your pressure bleeder to Randrey@verizon.net