How do you bleed brakes?

My boyfriend just changed the brakes on my car but he says he has to bleed them. Is this necessary? He's not too sure how to do this and I don't want him to mess up my car. Does this video give an accurate description? http://www.carcaresite.com/2009/11/how-to-bleed-your-brakes.html ThanksHow do you bleed brakes?you only need to bleed if you got air in the lines, the peddle is way to easy is a sign of that. to bleed them you need one person in the driver seat and one at wheel caliper there is a bleeder valve on there 10mm socket. make sure you got fluid in reservoir and push and hold the brake down, while brake is held down brake the bleeder valve, and tighten Again. Lut go of the brake peddle pump 1 or 2 times and hold it all the way down again. Repeat them steps until only fluid comes out no air do this to all 4 brakes or the ones you changed good luckHow do you bleed brakes?Bleeding brakes is to remove any air in the brake fluid that is in the lines. It can cause the brakes to feel mushy or not work up to par. Simply changing the pads does not usually affect the fluid. If there were other problems other than the pads being replaced like replacing the caliper, then you will need to bleed.If you bleed them, check in the repair manual for bleeding procedures. they are in most books. generally you start with the furthest from the master cylinder to the closest. right rear, left rear, right front, then left front. the easiest way is to have 2 people. One sits in the car and the other does all the work. First, locate the bleeder screws. pump the brakes 3 times and hold the pedal in. While the pedal is in turn the screw and let some fluid out. Close it again right away. do this several times until you determine the air is out of the lines. Follow the same procedure on every wheel. Keep checking the fluid level to make sure it is full, you don't want to get more air in the lines. There are several methods and you can get bleeder kits at the auto parts store. Have fun or see a mechanicHow do you bleed brakes?You only need to bleed the brakes if you opened a brake line. Usually not necessary if you just changed pads %26amp; rotors/drums. Only if you changed wheel cylinders or calipers.How do you bleed brakes?I didn't look at the video, and despite what the first two answers tell you, it is always recommended to bleed the brakes after replacing the pads / shoes. Not doing so may, at the very least, cause fluid to overflow out of the brake master cylinder.......remember that the old brakes allowed the fluid level to lower and required some topping off of the cylinder; after replacement brakes, that fluid will go somewhere, which will be out of the top of the master cylinder