caliper help

angrygiant · Dec 13, 2010

im in the process of finishing a 6in lift so i had to get extended brakelines and brakefluid leaks out of where the bleeder screw is and dont want to over crank that bolt in anything i can look for? a seal or something that could be hidden somewhere on that? or put silicon around it? any help would be greatly appreciated.

Talyn · Dec 13, 2010

Pull out the bleeder and make sure that there isn't any junk around the seal face. Better yet just replace the bleeder valves.

angrygiant · Dec 13, 2010

the bleeders are somewhat new (replaced in the spring) its that bolt that you screw the breakline on with that im seeing the leak from

nota944mechanic · Dec 13, 2010

If you didn't remove the bleeder screw then it's most likely nothing more than a piece of trash/rust trapped somewhere. Pull the bleeder screw out, clean and inspect it. The bottom of the screw has a tapered mating surface to match that of the caliper, if this area doesn't have a perfect seat then you will have a leak. This is most likely the issue.

You may have to replace it, but they aren't expensive. While it's out, you might want to SLOWLY apply the brake pedal to flush anything out -if you mash too hard fluid will spray out like a water gun.

I hope this helps.

nota944mechanic · Dec 13, 2010

Did you replace the crush washers?

angrygiant · Dec 13, 2010

thanks man ill have to try that with that screw it probly is dirty theres like an inch of dust on my poor jeep its been sittin so long

Original_MudButt · Dec 13, 2010

angrygiant said:
......its that bolt that you screw the breakline on with that im seeing the leak from

Then it's not the bleeder screw that's leaking.

That bolt is called a banjo bolt. There are two copper washers (gaskets) that go with it. One of them most likely is scratched or there is debris in there.

Pull off the banjo bolt and take it to the parts house with you and get new gaskets. Be sure the i.d. is not too big, they should closely match the diameter of the bolt. You will need 2 per caliper. Get a can of brake cleaner while you are there.

!!Make sure everything is squeaky clean!! Use the brake cleaner.

Put one gasket on the banjo bolt first, then the banjo fitting (it's on the end of the brake line), then the second gasket, then install it all on the caliper. It shouldn't take too much torque to tighten it. Check your service manual for the torque value.

Bleed the brakes.....

Make sure EVERYTHING is super clean while you are doing this!! Failing brakes are a VERY bad thing.....:flame:

jeeperjohn · Dec 14, 2010

Original_MudButt said:
Then it's not the bleeder screw that's leaking.

That bolt is called a banjo bolt. There are two copper washers (gaskets) that go with it. One of them most likely is scratched or there is debris in there.

Pull off the banjo bolt and take it to the parts house with you and get new gaskets. Be sure the i.d. is not too big, they should closely match the diameter of the bolt. You will need 2 per caliper. Get a can of brake cleaner while you are there.

!!Make sure everything is squeaky clean!! Use the brake cleaner.

Put one gasket on the banjo bolt first, then the banjo fitting (it's on the end of the brake line), then the second gasket, then install it all on the caliper. It shouldn't take too much torque to tighten it. Check your service manual for the torque value.

Bleed the brakes.....

Make sure EVERYTHING is super clean while you are doing this!! Failing brakes are a VERY bad thing.....:flame:

Good points here. Also make sure the block on the end of the brake hose is oriented correctly to the caliper. If it is not it will not sit flat and it will leak. Make sure no part of that block is resting against any part of the caliper.

kastein · Dec 14, 2010

X2, those copper crush washers are very important and cannot be reused.

bdahlg · Dec 14, 2010

and make sure one of the old washers isn't still stuck on the old lines. Doubling up an old one on top of a new one will also cause a leak. I would take the line off the caliper, double check that there isn't an extra one on there, and throw on a new set of crush washers...then bleed. Doesn't take long, Brakes are important yunno?

Talyn · Dec 15, 2010

kastein said:
X2, those copper crush washers are very important and cannot be reused.

They can be is you anneal them first. Heat them up red hot and then let them cool either by quenching them in oil or air cooling. Makes them soft again. However, new ones are always better.

coldoath · Dec 15, 2010

I actually just had this problem. Just fixed it today actually. There are copper washers that keep that break line from leaking. I just replaced those and bled the lines and I'm good as new! Not sure where you buy these at, cant be hard to find, cause I just had my alignment shop fix me up while they were doing my alignment. Best of luck!!

caliper help

angrygiant

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Talyn

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angrygiant

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nota944mechanic

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nota944mechanic

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angrygiant

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Original_MudButt

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jeeperjohn

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