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Thread: Fluid on the rear brake calliper

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    Eek Fluid on the rear brake calliper

    I recently changed the rear n/s brake calliper (with help from this site) and changed both sets of brake pads on the rear. All seems fine, the cars stops fine and the correct level is in the reservoir. The only niggling thing is I'm finding what seem's to be a small fluid (leak?) on the bolt which connects the hydraulic pipe to the calliper. I have made sure it is on tight, which it is, and the bleed nipple area is dry. Any ideas?

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    Is there not a small copper washer on one or either side of the banjo bolt connector? Maybe this is where the leak is.
    "We are not some sort of dictatorship!"


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    There is a washer between the bolt head and the square connector but I can't tell if its copper or not. Do you think the washer may just need to be renewed then?

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    May do, got to be worth look into as if there is a leak air will no doubt find its way into the braking system. Maybe there's just a small piece of crud preventing a proper seal.
    "We are not some sort of dictatorship!"


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    Thanks DasArab. As soon as I get the wheel bolts sorted I'll pull it off, I'll clean it up and maybe renew the washer and see where I am from there.

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    The copper washers are the most likely source of leak as they are generally one way items and for the cost of them it is worth doing, but it is one of these things that you never pick up on till it does leak!

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    Next time I'll replace the washer just incase

    Do you know what size it is? I would like to be able to buy one before I take it apart for replacing.

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    There should be two seal rings either side of hose banjo done up to 40nm

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    So there should be a sealing copper washer on both sides of the banjo connector? I think I have only the one on mine so that would explain the small leak. Do you know what inner and outer diameter the seals are?

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    Sadly not but being brake hydraulics i wouldn't take a chance and get
    new ones from a dealer then you know you have the coorect ones
    and surely they cant be much

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