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Old 05-28-2010, 01:01 AM
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do I have too?

I'm putting on a new brake booster,do I have to bleed my brakes?

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Old 05-28-2010, 05:14 AM
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You don't have to bleed the brakes if you can remove the booster without disconnecting the brake lines from the master cylinder.
BUT! In most cars you DO have to disconnect the brake lines from the master, because there just isn't room to get the booster out without taking a chance of messing up the lines when you pull it out of the way.

Do it right. Remove the master cylinder. R&R the booster. Re-install the master cylinder.. Bleed the brakes...You are supposed to flush the brake fluid every 2 years anyway.

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Old 05-28-2010, 02:22 PM
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Quote:
Originally Posted by powerrodsmike
BUT! In most cars you DO have to disconnect the brake lines from the master, because there just isn't room to get the booster out without taking a chance of messing up the lines when you pull it out of the way.
Um, it depends on the car. I've replaced several GM power boosters (both vacuum type and hydroboost) without disconnecting the brake lines. In fact, most of the power brake cars I've worked on have a coil formed into the brake line before it enters the master cylinder. This coil provides additional flexibility specifically so you don't need to disconnect the lines to replace the booster.
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Old 05-29-2010, 03:59 PM
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I have always been an offroader, and brakes are pretty damn important to us. I bleed my brakes when I change pads. It's a few minutes of your life, but a very satisfying feeling of security, in my opinion.
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Old 05-29-2010, 04:18 PM
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Quote:
Originally Posted by imagefxphoto
I have always been an offroader, and brakes are pretty damn important to us. I bleed my brakes when I change pads. It's a few minutes of your life, but a very satisfying feeling of security, in my opinion.
Do whatever makes you feel good, but I'm curious as to what that's supposed to accomplish. Bleeding the brakes removes air in the system. If you have air in the system, you have more of a problem than just bleeding will solve. If you don't have air in the system, there's no particular reason to bleed them.

Now, if you are completely changing the fluid, that's a whole different reason and I would agree that's a good thing to do periodically. You can get water in the system that can boil and lead to vapor pockets. Simply bleeding doesn't get all this out, necessarily. A complete fluid change will.
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Old 06-03-2010, 07:51 PM
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Why not bleed them?

Just bleed them out. It wont hurt to do it and its not difficult to do. Instead of guessing about it just do it.
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Old 06-04-2010, 10:51 AM
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I would say bleeding should be a matter of how your brake fluid looks too. If its not clean and clear it would be worth your time to bleed out the old fluid and put new in and it really doesn't take that long to do.

Do you have to? I've never had to remove brake lines when changing a booster but all I own is truck and there has always been plenty of room. You should unbolt the master cylinder first anyway so you'll see if you have enough room to get by.
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