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Old 06-25-2018, 10:06 AM
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Babypig
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Default brake hose help

hey guys and girls, the copper washer for the 2 front brake hoses to calipers is a tricky one. Dealer had PN 21012386 copper washer which was smaller and thicker than the others i've used in past will these work or is the thinner washer specific to the c3? thanks in advance.

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Old 06-25-2018, 10:40 AM
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DUB
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I would look at it when you slide it on the hose and see if the copper washer covers the grooves in the hose fitting that it will mold into it and seal. If it covers them rather well...you should be good to go. Or go out adn get wider ones if that is what you feel is best if you can find them. Being thicker is good in my opinion....as long as is it wide enough to seal against those grooves.

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Old 07-22-2018, 02:34 PM
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Originally Posted by DUB View Post
I would look at it when you slide it on the hose and see if the copper washer covers the grooves in the hose fitting that it will mold into it and seal. If it covers them rather well...you should be good to go. Or go out adn get wider ones if that is what you feel is best if you can find them. Being thicker is good in my opinion....as long as is it wide enough to seal against those grooves.

DUB
Dub, will any copper washer of the correct size work? I read somewhere that the copper washers that come with calipers are annealed so that they are soft enough to form a good seal. I am asking because I am struggling right now with stopping that leak between the front hose and the caliper, have tried 3 washers so far, have ordered 4 more from a Corvette vendor. The last one I installed I tightened sorta pretty tight, then loosened, then tightened more. Leaked. Repeated that process, tightening more, then again, and then really leaned on it. It's only a weep of a leak but probably still can draw air back into the system (1972). It's killing me.

I apologize for sorta hijacking the post, but this info might help others....
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Old 07-22-2018, 04:51 PM
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revitup
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Sounds like you're over-torqueing them. Are you using a torque wrench? There are recommended torques for flared fittings. The torque specs you'll find on-line vary somewhat but they're all in the same ballpark.
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Old 07-22-2018, 06:09 PM
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We are talking about the hose to caliper fitting using the copper washer; my flared fitting isn't leaking
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Old 07-22-2018, 06:28 PM
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Originally Posted by kansas123 View Post
We are talking about the hose to caliper fitting using the copper washer; my flared fitting isn't leaking
Gotcha. Using the proper torque would still apply.
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Old 07-22-2018, 11:17 PM
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stock76
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What works for me is to initially tighten the hose good and snug. If you still get a little seepage, tighten just a little more and see if that does it. If not, tighten a little more at a time until no more leak. Sometimes I have resorted to holding a wrench on the fitting and very lightly tapping the wrench with a hammer to get that final little turn that stops the leak. The trick is not to over tighten, just to tighten the hose fitting enough.

The crush washers are really designed for a one time use so chances are that backing one off because it is leaking and then trying to tighten it again may not work and get a good seal.
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