[AndyM]

As for the Master Cylinder, am I correct in my thinking that the rear reservoirs service the rear brakes and the front service the front brakes?

What function does the little cups on the gasket serve?

I ask this becasue I have a power bleeder and it doesnt work worth a poot. I clamp it down as tight as i can get it and when i pressurize the tank, the fluid leaks all over the place. I was thinking about taking the old cap to a master cylinder and adapting it to work with the pressure bleeder.

Any suggestions?

Oh, yeah, its drums all around.

 

[Jan Ove]

Wrong, rear reservoir serves the front brakes, and the front reservoir serves the rear brakes

 

[1969XR7Vert]

The cups are expandable bellows that pop out as brake fluid level drops. You might be able to use an old cap, but you will have to cut a hole in each of the bellows or remove them. Trouble getting a power bleeder cap to seal is very common, I would even call it a rite of passage! Usually they can be made to seal with a little finesse, but how well the cap fits the cylinder housing, the condition of the gasket and the like would also all play a part.

Regards,

Bob

 

[clanceman427]

I use a vacuum pump to bleed brakes. I think it works great, I can work by myself, and as long as I keep an eye on the master cylinder fluid level (master cylinder cap is off while I bleed the brakes) and don't let it get too low, it's a simple process. Plus, it kinda serves as a flush-and-bleed all at once, due to the volume of fluid you pass before you don't see bubbles in the bleed line anymore.

Kevin

 

[sweetair]

To add to this, the rear chamber is bigger, for the front brakes, and the front chamber is smaller for the rear brakes.

 

[1969XR7Vert]

To add to this, the rear chamber is bigger, for the front brakes, and the front chamber is smaller for the rear brakes.

On a disk/drum car, yes, but his is drum/drum so they are the same.

 

[AndyM]

I was thinking of maybe adding a thicker gasket in an old cap with some fittings attaching the hose. I will let you know how that works.

Every time I tighten the auto bleeder down, the top just bends. The top needs to be stiffened up. Maybe i will use a 1/8" thick plate on top of the rubber bleeder block to stiffen it up some and get uniform pressure.

BTW, when I was sitting at the rear drum the other day, I was thinking that the way do it would be to suck it out but I do not have a vacuum pump.

Wish I could work on it tonight but I have class.

 

[PBCOUG]

I used a pressure bleeder when I changed to disc all around and put in the propper M/C. I had the same problem with the seal not being tight, I used a large C clamp to clamp it down in the center and it worked great.

 

[AndyM]

thats an interesting fix. Thanks for that. I think I ned to go ahead and replace the lines. The car was parked for a while with no brake fluid so I think they are pretty rusted on the inside. I tried a vacuum pump and only got a little fluid out of the back brakes. For the fronts, the fluid came right out in a pretty healthy stream.

 

[clanceman427]

Do you like the vacuum pump now that you tried it?

 

[sweetair]

Thank you for that clarification. I must have missed that in the first post.

On a disk/drum car, yes, but his is drum/drum so they are the same.