I would like to use a power brake bleeder to bleed the brakes on the '93 Breakaway. The reservoir has a 5 5/8" diameter and wondered if anyone knew where to get a power brake bleeder that had an attachment that size. Don't want to use the air actuated master brake cylinder if I don't have to. Sometimes when you bleed that way, you end up ruining the seals in the master brake cylinder and I understand they are very expensive to replace.
Jim

Have you considered using a vacuum bleeder from each wheel cylinder?

I'm in the process of making one. So far, I have an small old compressor from a dehumidifier. (Also works as a vacuum pump.) I have an old Mason jar with fittings in the metal lid for the collection reservoir. I still need to hook it together and get some small plastic tubing to connect to the bleeder nipple.

Was planning to get it ready to bleed my brakes when I get to Florida in March. I'll have pics when it's done.

Meanwhile, maybe you could try something like that on yours.

That might be the way to go. I guess you just hook it up to the bleeder screw and watch the level in the reservoir. Still eliminates the master brake cylinder right?

The vacuum should pull the fluid all the way from the wheel through the lines and from the reservoir. As the fluid is drawn you can watch the color. Just make sure to keep the reservoir filled!

When in the rest position, the master cylinder is open to the reservoir, so the fluid moves right on through.

Too bad my rig isn't done yet to test it... it should work fine.

I have used both vacuum and pressure systems to bleed brakes.

The benefit of vacuum is that it will cause any water in the system to boil (vaporize) as the vacuum is increased. This will tend to remove more water and water vapor as the bleeding process is going on.

Be aware that bubbles you see in the container may not be an indication of air in the system but air sucked around the bleeder nipple as it is opened.

You must keep a constant vacuum on the bleeder nipple once it is opened and close the nipple before vacuum is lowered to prevent introduction of air in the process.

I use a slightly different process but is more complicated so I will leave it at this

You can get a vacuum hand pump at Harbor Freight and in the kit it has some neat containers perfect for bleeding the system.