Pressure bleeding brakes?

[Zelfear]

Has anyone done this with our cars. I have googled it and all I can find are ones with plastic caps. I would like to try to do this with my car. I think if I hose a big hose clamp to tighten the rubber cap I can make it work. Any ideas?

 

[WhtMa71]

What?

 

[Zelfear]

What?

Ok Pressure bleeding your brakes you put pressure in the mastercylinder to push the fluid through the lines. All the ones I have ever seen use a plastic cap. The cap on my mastercylinder is rubber so as soon as you apply pressure it is sure to pop off. I was wondering if there was any way to get by this. The only thing I could think of was to put a hoseclamp around the cap to hold it in place. I wanted to know if there is a better way to do it?

 

[jetjock]

Lots of bleeders out there. Motive is popular:

http://www.motiveproducts.com/

Or make one from a garden sprayer. Fwiw I pressure bleed from the wheel, the way it's done on aircraft.

 

[MarkIII4Me]

Save yourself the headache. Just get a friend to help and have him bleed the calipers while you press the brake pedal.

 

[WhtMa71]

You might have to use the metal round universal bleeder.

 

[Zelfear]

Lots of bleeders out there. Motive is popular:

http://www.motiveproducts.com/

Or make one from a garden sprayer. Fwiw I pressure bleed from the wheel, the way it's done on aircraft.

I was trying to make one but I was wondering how to fit it to the master cylinder.

When you say you do it at the wheel I'm assuming you are using vacum. Correct?

 

[Zelfear]

Save yourself the headache. Just get a friend to help and have him bleed the calipers while you press the brake pedal.

I have already tried this but I'm not getting much of anything to the rear. I was wanting to pressure bleed it to eleminate the fact of it not being bled as the problem.

My brakes were working fine. I turned my rotors and didnt replace my pads and then get in the car and the pedals alittle low so I drive it and it gets worse the more I use it. I replaced the master cylinder 6 months ago and was having the same problem with getting very little to the rear and used a small vaccum pump and bled them like normal to get it to work but if I made a pressure bleeder it would be alot easier.

 

[jetjock]

I believe Motive sells a universal fitting that clamps over the master cylinder.

When you say you do it at the wheel I'm assuming you are using vacum. Correct?

....Fwiw I pressure bleed from the wheel....

Although vacuum (say with a Mityvac) works OK too. Anything is better than the old fashioned way...

 

[lewis15498]

Or make one from a garden sprayer. Fwiw I pressure bleed from the wheel, the way it's done on aircraft.

JJ, to do this you would simply pump the fluid into the bleeder until it comes out into the master cylinder correct?

 

[3p141592654]

He means pressure.

http://www.aircraftspruce.com/catalog/lgpages/homebuilderBrakeBleeder.php

 

[jetjock]

JJ, to do this you would simply pump the fluid into the bleeder until it comes out into the master cylinder correct?

Yes. It works well, especially for a convoluted system. Bubbles prefer to go up you know...

 

[adampecush]

He means pressure.

http://www.aircraftspruce.com/catalog/lgpages/homebuilderBrakeBleeder.php

bookmarked for future purchase...

 

[gaboonviper85]

http://www.jscspeed.com/universal/products/motive.htm


edit...damn someone beat me to it!

 

[Supra7MG]

I did a buddy's MKIV today as well as my 2 Supra's in the past with a pressure bleeder.
The results are not convincing.
While flushing a system it helps to get things started, especially if I'm alone. I always follow up with having a friend depress the brake pedal slowly till it bottems out and then crack the bleeder of each caliper one at a time. This method has always produced a rock hard brake pedal.

 

[BlackDevilSupra]

The TV show, "Two Guys Garage" or maybe "Gearz", featured this Reverse Bleeding Brake System from "Phoenix Systems" on one of their episodes: http://www.brakebleeder.com/index.php?main_page=index&cPath=2
They offer different kits dependent on usage frequency / price for the typical DIY to professional.
Visit the main page which has vid's and additional information and technique, instruction, etc.

 

[lewis15498]

Yes. It works well, especially for a convoluted system. Bubbles prefer to go up you know...

Indeed. Just never really thought about it.

 

[Zelfear]

Well, I made my own last night. We used a 1-1/2 rubber pipe coupling and a 1-1/2 screw in pvc cap. Drilled a hole in the pvc cap threaded in a T. Connected a gauge to one end and a regular air hose fitting to the other. We pumped the compressor up to the desired pressure then connected the hose and opened the bleeder screw. This worked great only problem was stopping to refill the MC.

I needed to get the car drivable last night so we just kinda rigged it but it worked great. I'm going to build a better one that will refill as it pumps now that I have time. Thanks for all the responses.

P.S. I can take pics of what I made if anyone is interested.

 

[adampecush]

Well, I made my own last night. We used a 1-1/2 rubber pipe coupling and a 1-1/2 screw in pvc cap. Drilled a hole in the pvc cap threaded in a T. Connected a gauge to one end and a regular air hose fitting to the other. We pumped the compressor up to the desired pressure then connected the hose and opened the bleeder screw. This worked great only problem was stopping to refill the MC.

I needed to get the car drivable last night so we just kinda rigged it but it worked great. I'm going to build a better one that will refill as it pumps now that I have time. Thanks for all the responses.

P.S. I can take pics of what I made if anyone is interested.

I'd think a blower nozzle with a threaded tip would work best as it would give you full control over the air.

 

[Zelfear]

I'd think a blower nozzle with a threaded tip would work best as it would give you full control over the air.

Only problem with using that on the setup I had, was I would have to unscrew it to refill the MC or have a diffrent pressure relief.