If the O-ring on the brake puck seeps a bit only under pressure, the fluid may be burned off on the brakes and won't leave many signs that you have a leak until it starts leaking when you are parked.
This reply will depend a bit which brakes you have, but the disc type brakes typically used on the KRs, including Matco and Cleveland, will often times get a small amount of corrosion around the puck during the year or so of storage before they get installed and serviced. The fix is pretty simple. Pop the puck out of the slave cylinder and scuff the inside of the cylinder with scotch-bright. Remove the O-ring seal and scrub the O-ring seats in puck. Usually the O-ring is just fine and can be re-installed, but it also won't hurt to use a new O-ring either (make sure it's the correcct type!). Inspect the O-ring (new or old) for damage and wipe the O-ring thoroughly with either DOT-3 or 5056 hyd fluid before re-installing on the puck. Re-assemble the brakes and service with the correct fluid. I had this problem with my KR when I first started flying it 9+ years ago and fixed it with the procedure above. I check the brake fluid level at annual, but the only loss since then has only been due to brake pad wear. Jeff Scott, N1213W On Sat, 11 Nov 2006 13:40:36 -0500 "kenneth l wiltrout" <kwiltrout1...@verizon.net> writes: > I've added fluid 2 times this year and once last year, no visible > leaks > anywhere except for slight seepage at the caliper o rings, that's > the only > place I could be loosing it, guess I'll rebuild the calipers and do > the > lining while I'm at it.?????? > Ken Wiltrout > Kutztown <p a > > -----Original Message----- > From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On > Behalf > Of Larry&Sallie Flesner > Sent: Saturday, November 11, 2006 9:43 AM > To: KRnet > Subject: KR> brakes > > > > I found that > >the reservoirs were almost empty. This is the third time that I > have had > to > >fill these things. I don't see where the fluid is going. I had > the same > >reservoirs on my first KR, but with Goodyear wheels and brakes and > I never > >had to fill them. I guess you get what you pay for and I will have > to be > >more diligent about filling them on a schedule. > >Daniel R. Heath > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > Loosing that much fluid should leave a tell tale sign somewhere. > If you have any in-line fittings, like in the wing, etc., I'd be > checking > for some leaks. If you're running "plastic" lines they tend to > soften > at the brake attach with excessive braking and may be leaking > there. I've only had to top my reservoirs once in 3 years and > 260 hours and that was when I changed wheels and brakes. > > Larry Flesner
