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Ok guys, I have a leak on the front brake master cylinder on my 2013 Ultra that appears to be leaking out of the small holes on the bottom of the switch housing. Its a very small leak and I have not had time to tear into it but I think I have a diagnosis but I wanted to get some input from yall.
My plan is to remove the MC from the bike, clean it and rebuild the pushrod mechanism with new components. While Im in there Im gonna flush out the system with new fluid (I have speed bleeders so thats easy). Then clean any mess in the switch housing before final assembly.
Anyone have any info that they can share about a situation like this, or thoughts on why my plan is a fail before I tear into my mistress?
Are you referring to the lid/gasket that is leaking? If so, you don’t necessarily need to rebuild the mechanism unless you have some other issue with brakes. Address it soon as the fluid will eat the paint/powdercoat on the switch housing.
Replace lid and gasket and don’t overtighten screws or they’ll crush down and cause leaking. It takes very little to tighten them down enough. Did someone open yours previously for service?
Thanks for the input Dawg.
No, it’s not the lid, it’s the holes on the bottom of the switch housing. It’s like it’s leaking from the lever pin that presses the plunger in the cylinder to pressurize the fluid. Not leaking on top.
I'm the only person that wrenches on my stuff, but no I haven’t opened lately.
Last edited by Sturgis67; Apr 8, 2019 at 12:37 PM.
Yeah, I can make it a 3 beer job if I take my time.
Any excuse to hang out in the garage works fer me.
No paint issues luckily, but it did mess up one of my lower speaker pods a bit. Guess I gotta get new ones. Hehe
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Master cylinder leaking from switch housing
