how do i do bleed it? jus got a new brake booster an master cylinder an idk how to bleed it lol i didnt get no instructions with it so im lost

 

First thing you do; You need to bench bleed the master cylinder. Chuck the master cylinder in a vise so its stable.

Did the new master cylinder come with plugs and hoses? If it did, thread and plugs into the holes where the lines go, attach the hoses and put them so the fluid will drain into the reservoir. Fill master Cylinder. With a screwdriver, push the piston in the back of the master cylinder slowly until no more air comes out of the lines. Hold the plastic lines so they dont go flying and spraying brake fluid everywhere. Make sure the fluid is being pumped back into the master cylinder.

If the master cylinder didnt come with the plugs and lines the process is basically the same, but a little different. When the master cylinder in the vise, filled with fluid, put your thumb and index finger of your left hand (assuming you are right handed) over the thread line ports on the master cylinder. This "should" prevent air from escaping. With your right hand pump the master cylinder with the screw driver while your fingers are blocking the holes. Fluid will try to push past your fingers, that is good, that means you are doing it ight. The trick its to not allow air to be sucked back into the holes when you are releasing pressure off the piston, so make sure your fingers are blocking the holes tightly.


Its not required to bend bleed master cylinder but it helps tremendously. Already installed the master cylinderon the truck? No big deal. Fill the master cylinder and have someone pump the brakes. When they have the pedal held down, loosen the lines at the master cylinder, just like you would at the wheel. Repeat until you feel like you got the majority of the air out. Then bleed the wheels, starting with the wheel farthest from the master cylinder.

 

What he said. You can also youtube it. that's what I did. Pretty simple really and will definitely lessen the bleed time once you get it installed. You can buy a bleed kit from any auto parts store. plugs/tubes provided.

 

I am so glad we got some experts in this forum coz i would be lost if we didnt. im glad u could answer that question because i would have asked it. im about to do the same job on my 77.

 

You can buy a MC bleeding kt at an autoparts store. I got one at NAPA.

https://www.napaonline.com/Catalog/C...282407468&An=0

I used some clear hose I had instead of the black.

 

ok thanks guys