If the master cylinder is off of the bike and disconnected from the brake line, you can dissolve the crystallized brake fluid by a short soak in hot water. After the parts separate, dry them off and blow any remaining water off with compressed air.
I soaked the parts in soapy hot water but nothing was coming apart. I ended up putting the housing in a vice and clamping a channel lock plier onto the plunger end and turning. After much marring and trying to twist it finally started to turn and I could hear the spring turning but it took some twisting and tapping the pliers for it to come out. the inside of the cylinder looks clean but hard to tell. I am soaking for a while the see if it will clean up.
The plunger/spring looks good except the tip where the pliers scraped it up. How does it go back in though? does the other end where the hose screws in come out?
I think I have four options; get the retro fit from China, Buy the rebuild kit for $67, buy a whole new master cylinder assembly from MAX for $152, or try to reuse what I have.
Now that I am looking at the photos, the MC doesn't look to be in good condition so may have to go the Chinese or new OEM route:
fullsizeoutput_3833.jpeg (30.05 kB . 613x576 - viewed 512 times)Marred up tip. Not good. Little plate on the end of the plunger insert came off.
fullsizeoutput_3835.jpeg (26.94 kB . 676x576 - viewed 560 times)Is inserting to the left the only way for this to go in? The taper on the plunger bushings is against the grain.
fullsizeoutput_3834.jpeg (19.43 kB . 768x335 - viewed 547 times)Thanks for you help.
