brakes...cant get rear lines to stop leaking!

[broncoman6524]

ok on the top of the diff cover. theres the main line which goes into the junction box i guess. one of the 2lines that go to the axle are leaking.

i CANNNOT get them to seal! ive tried tighteing all of the lines. and short of actually pulling them off, i cant seem to get them right

any suggestions? maybe pull them off clean everything up REAL good and flare them out again?

 

[goldwing2000]

Yeah, sounds like either a bad flare, bad seat or just different kinds of flares on the two.

 

[gmc4cw]

Yeah, sounds like either a bad flare, bad seat or just different kinds of flares on the two.

I agree. there is only a few things that could be wrong. unhook everything and check the flare and seat. could be rusty or have a groove in it.

 

[TexasBlazerBoy]

Damn, I wish I had that problem. I can't get any brake fluid back to my rear brakes.

 

[goldwing2000]

Damn, I wish I had that problem. I can't get any brake fluid back to my rear brakes.

Sounds like either a bad master or a bad combo valve. Possibly a steel line rusted shut or the rubber hose degraded to the point where it's plugged itself up.

 

[Mudstud]

Cracked fitting or cracked hardline.

 

[broncoman6524]

welpi started messin with it today...on the drives line. it leaks between teh flare and fitting. if that makse sense so when its installed it leaks around the hardline NOT the fitting. so im off to the parts store to get a new line adn poss the t-fitting block thing.

i cleaned it, sanded the flare, blew out the line/block. cleaned EVERYthing with brake cleaner, wrapped the fitting with teflon tape. all with no avail. hope this works...

 

[Pvt. Maggot]

I had that problem, I cranked the fitting down and it stopped, but still having alot of problems with my back brakes, have fluid, but they will not build pressure at all. I'm about to just switch to disks, if I could find any info on it.

 

[broncoman6524]

id do that...except when i cranked it down. it started to strip it.

 

[Pvt. Maggot]

I'd get some new fittings, they need snugged down pretty good, and redo the flare just to make sure.

 

[broncoman6524]

thats waht im plannin on when. i go im gonna get new hardlines like i said...and just hope for hte best...lol

 

[Pvt. Maggot]

Are your lines bad? really rusty or anything? If not i'd say try and reflare before you spend money on new lines. Its nice to know they are new though.

 

[broncoman6524]

no theyre not rusty at all...this started only after i swapped axles...10-10. hmm maybe theyre not tight enough. idk im gonna go put it back to gether and put vicegrips on the thingys and try it that way lol

 

[Pvt. Maggot]

just go pickup a new fitting, re double bubble it, and crank it down, it should seal right up.

 

[broncoman6524]

welp as of right now its sealed... lol. theyre bled as best as i can alone...so well se once theyre bled properly.

 

[Mudstud]

I wouldn't use teflon tape on those fittings. You certain you are using all the same fittings- not mixing up AN and NPT or something.

 

[goldwing2000]

Teflon tape won't really hurt anything but it's completely unnecessary. The line seals on the flare and seat, not the threads.

Definitely make sure you're using the right fittings, though. An AN fitting would be next to impossible to mistake for a double-flare brake line but it would be easy to mix SAE and Metric lines.