Already replaced the cap and fixed the leak, just wondering how to clean up the damage to the paint.
Powder coating is a great way to do it. A lovely permanent coating. But you have to take the M/C off and deliver it to a powder coater.
Have a look at the M/Cs that have been painted- the paint always comes off and then they look like they have a bad case of eczema.
By the way, have you had your M/C cap off lately?
And if you did, did you place it with the lid or top of the cap facing down , say on a shop towel or a piece of rag?
And did you leave the rubber diaphragm in place whilst it was upside down?
The most common cause of HD master cylinder weeps and seeps is taking the Cap and the diaphragm off the M/C and putting it down Cap side first, on a soft surface so it won’t be scratched.
Brake fluid leaks from the diaphragm and gets under the plastic insert that maintains the shape of the diaphragm and supports it in position.
When the Cap and diaphragm are put back on, the fluid that ended up between the Cap and the plastic insert just slowly leaks out. There’s no gasket to stop it as it leaks from ABOVE the gasket and makes a mess of your M/C
