Replacing the Brake Fluid ???
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New User
Joined: Dec 2006
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Replacing the Brake Fluid ???
I have a 1998 Mazda B2500 2WD with ABS rear barkes and I would like to replace the old brake fluid. I have a hand-operated vacuum pump that can be used to bleed the brakes and works quite well but, I am not sure if the vacuum pump can be used to pull the fluid through the rear brake lines without creating a problem with the ABS system. Any thoughts or advice would be appreciated. Thanks.
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Joined: Sep 2006
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Yes it will work just fine.. just do not let the system go dry.
First suck the fluid out of the master cylinder resevoir, the fill it back up with fresh fluid.
Next starting with the wheel furthest from the MC (Right Rear) suck fluid out until it comes out clean... then refill the MC.
The do the same with the LR, then RF, then LF. Just whatever you do don't let the master cylinder run dry.
Good luck
First suck the fluid out of the master cylinder resevoir, the fill it back up with fresh fluid.
Next starting with the wheel furthest from the MC (Right Rear) suck fluid out until it comes out clean... then refill the MC.
The do the same with the LR, then RF, then LF. Just whatever you do don't let the master cylinder run dry.
Good luck
Moderator
Joined: Jan 2004
Posts: 13,851
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From: SW Va
Changing brake fluid is one of my pet peeves.
Probably a good idea to flush your's out, especially if it's the OEM fluid, because after about 3 years it's likely to have absorbed enough moisture to seriously lower the "wet boiling point" & begin to cause internal system corrosion.
I'd also consider using Motorcraft's PM-3 DOT-3 fluid, it's has impressve boiling point specifications.
I do my fluid flushes as MazdaRangerGuy outlined. He's right about being extra careful about not letting the master cylinder fluid level get so low as to suck air into the system, because if it gets into the ABS motor, you'll likely need a vacuum source to remove it, or worse & end up at the Dealer to let MazdaRangerGuy get it out for ya!!!! lol
So just take your time & you'll likely be just fine.
Let us know how t goes.
Probably a good idea to flush your's out, especially if it's the OEM fluid, because after about 3 years it's likely to have absorbed enough moisture to seriously lower the "wet boiling point" & begin to cause internal system corrosion.
I'd also consider using Motorcraft's PM-3 DOT-3 fluid, it's has impressve boiling point specifications.
I do my fluid flushes as MazdaRangerGuy outlined. He's right about being extra careful about not letting the master cylinder fluid level get so low as to suck air into the system, because if it gets into the ABS motor, you'll likely need a vacuum source to remove it, or worse & end up at the Dealer to let MazdaRangerGuy get it out for ya!!!! lol
So just take your time & you'll likely be just fine.
Let us know how t goes.
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Thanks for the replys. I changed the fluid today and the brakes works just fine. I have done this procedure a couple times several years ago but never on a vehicle with ABS.
I think I got most of the old (OEM) fluid out but in retrospect, I probably could have pulled a little more fluid out through the bleeders. I don't know what the fluid capacity of the Mazda B2500 is but, I removed and replace about 2/3 of a quart.
I think I got most of the old (OEM) fluid out but in retrospect, I probably could have pulled a little more fluid out through the bleeders. I don't know what the fluid capacity of the Mazda B2500 is but, I removed and replace about 2/3 of a quart.
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Joined: Jan 2004
Posts: 13,851
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From: SW Va
Good to hear all went well for you.
Bet your brake system has a BIG smile, now that it feels all fresh & clean inside!!!! lol
NOW, you & I know where we are on the curve!!!! http://www.aa1car.com/library/bfluid.htm
Bet your brake system has a BIG smile, now that it feels all fresh & clean inside!!!! lol
NOW, you & I know where we are on the curve!!!! http://www.aa1car.com/library/bfluid.htm
