Master Cylinder Bench Bleeding

[rockfla]

Clamp it into a vice, I have a couple of old brake lines that I cut about 3 or 4 inches long to thread into the brake line outlets, fill the master cylinder with fluid, attach a couple of rubber lines to the brake line stubs (or run the rubber hoses into a jar of brake fluid so it can pull fluid as well as push fluid), put the rubber lines back into the cylinder and slowly push the plunger in and out to bleed off any air in the master cylinder. Keep pumping until you don't see any air bubbles in the cylinder or if you use the extra bottle till you don't see air bubbles In either location.