Join Date: Oct 2002
Location: Farmington, MI,
Re: replacing brake lines
I replaced the brake lines with Spiegler SS lines on my 99 last winter. I went to my local, friendly dealer and asked about the same port. He sold me a plastic, screw-in adapter for a couple of bucks. (Least expensive BMW dealership repair visit in history. I know.) You only need to pry off the cover/cap, screw in the plastic adapter, and use the fitting to bleed the fluid. When you've finished the new line installation, unscrew the adapter and pop the cap back on. Done. Put the adapter someplace where you can find it for the next time you bleed the brake lines.
The dealer said not to just leave the adapter in place as the pointed end displaces the spring-loaded ball bearing valve at the bottom of the filler. Leaving the adapter in place could allow the spring to fail while letting air/humidity to potentially enter the circuit.
I know there are all kinds of threads here about how to remove that factory-installed filler, but this little device is way, way less complicated. And, you can't mess up the factory piece, costing you even more to fix that.
81 R100RS (Sold it 4/10)
03 Moto Guzzi V11 LeMans