Here are some pics to help everyone see my situation, and to help with my Hydrovac questions:

Pic 1: My 1960 Viking with new Master Brake Cylinder under hood.

http://i950.photobucket.com/albums/...0Repair/VikingMasterBrakeCylinder002.jpg

Pic 2: Closer shot of Master Brake Cylinder
http://i950.photobucket.com/albums/...0Repair/VikingMasterBrakeCylinder003.jpg

Pic 3: Pic of Hydrovac. This is the brake line coming from the Master B. C. and going to the Hydrovac.
http://i950.photobucket.com/albums/...0Repair/VikingMasterBrakeCylinder008.jpg

Pic 4: Hydrovac.....Is this the bleeder screw for the Hydrovac?
http://i950.photobucket.com/albums/...0Repair/VikingMasterBrakeCylinder009.jpg

Pic 5: Hydrovac....is this the fill plug for the Hydrovac? If so, how much mineral oil do you fill in this rascal?
http://i950.photobucket.com/albums/...0Repair/VikingMasterBrakeCylinder010.jpg

Pic 6: This shows that the brake pedal is only going 1 inch before hitting a stone wall.....it is rock-hard, and will not go any further....but I am not getting any fluid to the Hydrovac.
Pedal Up:
http://i950.photobucket.com/albums/...0Repair/VikingMasterBrakeCylinder021.jpg

Pedal Down:
http://i950.photobucket.com/albums/...0Repair/VikingMasterBrakeCylinder022.jpg

Today I loosened the line going from the Master B. C. to the Hydrovac, and I got fluid running out. However, when I push on the brake pedal, I see no increase in the flow rate. I later loosened the line at the MBC which feeds the Hydrovac....I loosened it while someone pushed the brake pedal slowly, and I got fluid coming out. I closed the line and then let my helper release the brake pedal. We did this about 7 times, and I felt that all the air was out of the MBC. I then went back to the Hydrovac and loosened the line and had my helper push the brake pedal......and got nothing coming out.

Now, some more info. to help you experts diagnose the problem: The brakes have been bad for a few years, and I have been driving around the farm using the emergency brake whenever necessary. I have been refilling the MBC quite often, and I would get alot of leakage whenever I hit the brake pedal since the fluid was shooting around the shot seals in the MBC, and leaking down the inner firewall. I never noticed any fluid coming from any of the wheel cylinders, and am thinking that perhaps alot of the fluid would slowly leak downward and into the Hydrovac. Maybe it is half full with brake fluid, and that is why it runs out when I loosen the brake line from the MBC, but am getting no fluid when I hit the brake pedal. Does that make sense? Im thinking that maybe I need to totally drain the Hydrovac of all fluids and then fill up with the correct amount of mineral oil, and then attempt to bleed the lines from the MBC to the Hydrovac.

Please let me know if anyone can solve this mysterious Viking problem. I really dont have the time now to remove the Hydrovac and tear into it searching for the problem.....hoping it will be a simplier fix.

Also....what if I am not getting enough vacuum to the Hydrovac? Years ago I would hear a nice "air release" sound when I touched the brakes, but now I can run the engine, let the vacuum build, and tap the brakes....and I hear no air release sound.

Help.......
dwight

Keep the rusty classics going.