Master Issue

This weekend, found a pool of brake fluid dripping down the side of the bike, and discovered it was coming from the back of the master cylinder. I pulled the assembly and found some rusting on the outside of the plunger, and decided to pull it apart to inpect.

The inards did not look too bad, pull all the parts, plunger, spring, rubber gaskets, etc. I pulled the top resivour off, and unscrewd the brake switch.

There was some rust on the inside, so I soaked in 100% vinegar for two hours. This cleaned it up nice, and I soaked with thin oil to keep it from rusting again.

Cleaned up all the parts and re-assembled, re-installed, and bam no brake pressure. I will buy a rebuild kit as air seems to be seeping through at this point.

Here is the rebuild kit, $69.00

Picture of ORIGINAL internal plunger for reference