Bench bleeding master cylinder

[pebbleboy]

What would be the difference in bleeding the master cylinder before you install it as opposed to after? This would be before you hooked up any brake lines to it. After you bleed it you would hook up the brake lines and bleed it again normaly.

[truckdude239]

the way i bled mc is install them on the truck use the bleeder kit thats comes with it and slowy press the pedel and have some one watch till no more air then hook brake lines up bleed whole system but make sure not to run out of brake fuild or you'll be starting all over lol

[rage'nrat638]

the whole world....
if you bench bleed the master and reinstall the lines and pump up and bleed each fitting at the master you can get away from having to bleed the complete truck and save tons of brake fluid..and about 1 1/2 hours. and possiable broken bleeders on the wheel cyl's

[pebbleboy]

Originally Posted by rage'nrat638

the whole world....
if you bench bleed the master and reinstall the lines and pump up and bleed each fitting at the master you can get away from having to bleed the complete truck and save tons of brake fluid..and about 1 1/2 hours. and possiable broken bleeders on the wheel cyl's

I'm swapping front brakes to disc so that would only save me from doing the rear.

[rage'nrat638]

Originally Posted by pebbleboy

I'm swapping front brakes to disc so that would only save me from doing the rear.

o man that sounds like a great upgrade...bet your jumping at the chance to drive it, i know i would be. some times it's good to bleed the complete system just to clean the old brake fluid out. clean the lines out..
let us know what kind of a difference it makes..your pal mark

[pebbleboy]

Originally Posted by rage'nrat638

o man that sounds like a great upgrade...bet your jumping at the chance to drive it, i know i would be. some times it's good to bleed the complete system just to clean the old brake fluid out. clean the lines out..
let us know what kind of a difference it makes..your pal mark

I have been patiently wating till i can get enough time to work on it and do the swap. I was planning this weekend but I think I'll be doing it on Easter.

[truckdude239]

an hour and half??? wow i installed my mc bled it and bled the whole truck in 20 mins with a helper

[qksilver]

I let them gravity bleed, an easy way to flush the system. then slowly pump them up and bleed at the caliper or wheel cylinder.
I have had proportioning valves stick on me when I haven't bench or gravity bled the mastercylinder