Brake fluid change & bleed process...help!

[BimmerRob08]

Had to repost here since no one is responding on the DIY forum;

I'm a bit confused on the process. I guess I have to see it done in order to fully grasp the steps without screwing it up. I'm the hands on kinda learner grease monkey.

Ok, so to bleed I think I got it. Keep the brake reservor topped off and never let it drop below the min line. Push brake in, release caliper valve. Let it squirt, close the valve, then release the brake pedal. Do this for each brake (R/R, L/R, F/R, F/L) in that order until you see the bubbles disapear.

So I'm confused on a few things when it comes to brake fluid change. Since I have to disconnect the lines, replace the OEM calipers with BBK, new SS-lines. Do I keep the cap on the reservor? So the fluid don't run out? How much will bleed out while I'm replacing lines & calipers? Or will it stop?

Durring installation of the calipers & SS-lines, how do I keep air from getting in?

Also, once everything is installed, how do I exactly change the OEM fluid with the racing fluid I will use? I'd guess one doesn't want to drain the old out then run the new fluid in as that woud introduce lots of air, right?

I orderd a brake bleeder kit, but do I fill that with the new fluid, pressurize it and as I bleed the brake lines at each caliper, the new fluid will flow into the system? How do i know when it's replaced all the old fluid?

Thanks all, your inputs are allways appreciated!

Cheers,

[1MORELAP]

Gravity is your friend. Yes fluid leaks out - you can cap it with whatever silly plastic cap you can find.

[Kyoshi71]

Have someone pump the brake pedal multiple times until it gets firm, hold it down while you open the nipple. Close the nipple before your partner lets his foot up. Repeat until no air and only fluid comes out.

You will lose a lot of fluid when changing calipers and lines. Not sure exactly how much, but who cares. You're going to have to bleed all four anyway when the job is done, right?

Air is going to get up into the system when you replace lines and calipers. Any air in the system will be forced to the calipers and bled out the nipples when you pump the brake pedal.