Master Cylinder on my ATV took a crap :(

[burmjohn]

Master Cylinder on my ATV took a crap ... What happened was the brake so tight for some reason, so I figured I'd flush and bleed the brakes.  It appears the fluid was really bad, so bad there must have been water in there that nuked the o-ring in the master.  Once I flush it, it would not build pressure and I saw some black crap coming up through the reservoir, which I believe is the o-ring.  Anyways, I ordered a rebuild kit, $20, so hopefully that will do it.  Since the ATV is up @ the property, I ordered a used master cylinder I found off ebay for $10 so I could just rebuild that one at home, then do the swap when I go back up.  I'll flush and bleed again, and hopefully see some pressure.  I never rebuild one nor changed one on a ATV, hopefully its not to crazy!

[burmjohn]

I rebuilt the master cylinder tonight.  It wasn't that hard at all.  Hopefully this fixes the issue.

[fasteddie]

It has been almost two weeks without an update . Did it fix the problem ?

[burmjohn]

Yup, fixed it Saturday morning when I went up.  I swapped out the bad one with the rebuilt one, flushed, bleed, then the pressure picked up right away and worked perfect.  It was nice to ride the ATV with brakes