bleeding brakes?

[prkaye]

I think it's time I fill my brakes with brake fluid. I understand this process is called "bleeding" the brakes. Can anyone point me to instructions on how do this? Do I need any special equipment? What type of brake fluid should I use?

EDIT - I found a thread describing how to do this;
http://www.vansairforce.com/communit...leeding+brakes

What about fluid choice? Aeroshell 41?

[apkp777]

I am using Royco 782 http://www.skygeek.com/royco-782-syn...lic-fluid.html

It has a broad temperature service range.

[flytoboat]

Your best tool for bleeding brakes is probably the search tool. Lots of posts on the subject with various methods and equipment.
Good luck.

[prkaye]

One thing that isn't clear to me when bleeding the brakes using this method (forcing the fluid up from the bleeder valve at the wheel... http://www.vansairforce.com/communit...leeding+brakes), should I remove the cap from the top of the brake reservoir when doing this? The cap appears to be porous, so maybe i just leave it on and air will be forced out through the cap?

[Kokemiller]

... and watch as fluid rises, you can use a 10cc syringe to remove some before overflows and it runs down the firewall.

[prkaye]

What about removing the fittings from the reservoir on the firewall, and pumping until fluid starts pouring out of the lines here before connecting the lines back to the reservioir on the firewall?
Actually, what about disconnecting the lines at the master cylinders as well, and filling all lines with fluid prior to the bleeding procedure described above? I.e. get most of the air out directly first, and then use the bleeding procedure described above just to push remaining bubbles out?
Or would that be a waste of time?

Another question - I have all bonaco lines, so none are transparent. I won't be able to visibly check for bubbles anywhere. What have others with this setup done?

[swisseagle]

Hello Phil

Be carefull, you dont see the level of fluid throu the filter ... guess what will happen! You have to clean the mess on the firewall

Better is to remove the filter, place an tube adapter with the same thread, but a toube around an dack into a bottle, or take a bigger clear tube and let it stand up straight, so you can see when you reach the max. level and suck back a bit of fluid.

Be carefull when you do the other side, it will push air and bubbels up maybe.

Good luck and regards,

Dominik

[AltonD]

I put a fitting on op of the resevoir and ran a clear hose to a bottle. I bled a pretty good amount to get all of the air out. Then I sucked out what I needed with a Turkey injector syringe.

[prkaye]

thanks guys, all good tips.
Is a quart enough to fill a dual brake system?

[Rupester]

Hi Phil,

...just sent you a PM with an old post about some clever tricks for bleeding brakes. Hope they work for you.