BRAKE LIGHTS!!
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New User
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BRAKE LIGHTS!!
So i was driving a week ago and both my brake light and the rear abs light came on. The fluid level in the master was a tad over max 2 weeks ago. Now its two inches low. But the kicker is their isn't any leakage. Is it the brake booster? The fluid is going somewhere just not on the ground. The brake lines are new all around. If you have any other questions in order to give me a prognosis please ask. Thanx in advanced
Senior User
Joined: Jan 2007
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It's possible it could be leaking out the back of the M/C into the booster. Pull the vacuum connection out of the booster and see if there is any fluid there. Take a wire coat hanger or something similar and attach a piece if cloth or something absorbent to the end of it and snake it down to the bottom of the booster to see if any fluid is down there. Be gentle and don't have any sharp edges on the wire. Remember there is a rubber diaphragm inside the booster.
Posting Guru
Joined: May 2007
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From: North Reading Mass
Not uncommon for the MC to leak out the back and into the booster. It happened on my 83 F150. The brake fluid caused the booster to fail and produced a hissing sound from the vacuum leak. Replaced both the MC and the Booster.
regards
rikard
regards
rikard
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New User
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Something in that area whistles for a min after i kill the motor. That's probably it then.
Lead Driver
Joined: May 2009
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From: Tobyhanma, PA
Sounds like a bad booster or check valve then. That sound is prolly all your vacuum leaving the truck.
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Nvm the M/S and brake booster is good to go. Bake fluid is leaking out the rear driver side Drum brake. Whats next?
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Lead Driver
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From: Tobyhanma, PA
Out of the drum? Must be a bad wheel cylinder then. Bout $12 at a parts store. a couple bolts to swap it out, then reassemble that brake setup and bleed the brakes. If you know how to do drum brakes then this is a 15 minute job.
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Lead Driver
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From: Tobyhanma, PA
You have to pull the drum off and remove the springs/shoes. The wheel cylinder is held on by 2 bolts and the brake line itself threads into it. Remember you can always look at the other side to see how to reassemble the drum brakes if you forget.
Postmaster
Joined: Aug 2005
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From: Cleveland, TN
You are going to need new shoes after a leaking wheel cyl.. You will NEVER get the brake fluid out of the shoes. If you don't they will grab and give you all kinds of grief!!
Also do new shoes on both wheels. if not you will have uneven braking and again all kinds of grief...
Also do new shoes on both wheels. if not you will have uneven braking and again all kinds of grief...
Lead Driver
Joined: May 2009
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From: Tobyhanma, PA
I say if you're doing one cylinder to do both. Its only $10 IMHO I would prolly get new hardware too, most part stores have the whole she-bang for like $7 that gets you new springs. Make sure your self adjusters are in decent shape too.
Posting Guru
Joined: May 2007
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From: North Reading Mass
Anytime that I have to work on drum brakes I also get the hardware kit which makes the job go much easier. Pay particular attention to the self adjusters and do one side at a time.
regards
rikard
regards
rikard
Postmaster
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From: Cleveland, TN
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