Brake fluid leak?

Aux1

I installed my new K18 brakes. I tried to loosen the banjo coupler on the rear caliper a little (1/4 turn according to manual) to adjust better hose angle, and I noticed the bolt was very, very tight. I was gentle so I haven't noticed it turning at all under moderate wrench torque, but then I felt slipperyness around the bolt and coupler, as if some oil leaked. No visible drops though. I immediately pushed the wrench the opposite way, wiped it and left it alone. How come the oil got out? I haven't felt the bolt turn at all, maybe it only flexed under force...

P.s. they seem very good, bedded them in yesterday and will try them tomorrow on proper trails!

ratty2k

Brake fluid is one of those things that WILL find a leak, you may of just disturbed the seals enough to get a slight amount out. Provided theres no spongy feeling at the lever you'll be fine.

uniqueride

alot of new components have a very thin oil coating around vital areas maybe it was that.

Aux1

Hmm I checked the exploded view, the banjo coupling goes around a hollow metal shaft with a bolt head on top, and the banjo has an o-ring at the each side. The shaft is screwed in and squeezes the o-rings creating a seal. Maybe the rings got disturbed when I tried to loosen the shaft. But the amount of oil that got out seems insignificant. You say, no lever sponginess = no air inside and all ok?

Sorry but I'm always very detailed and too worried lol

ratty2k

Aux1 wrote:

You say, no lever sponginess = no air inside and all ok?

Sorry but I'm always very detailed and too worried lol

Dont be sorry! and yes no sponginess= on air inside and all ok!