I am in the middle of this and the Master piston is corroded to the point of "How do you remove it"??? Any ideas and still salvage the assembly? Also what should I clean out the bore with?
Now you have done it!! You better just order yours now. Good luck.146K and I haven't touched my SMC. How unusual is this? I do think I will swap it out over the winter for piece of mind.
Knowing what I know now, I would lift the boot on top, take a look in there for any corrosion, if there is replace the piston set (45620-MCS-G04 is the new part). If there isn't any corrosion put silicon grease in there and put it on your maintenance schedule to perform this at least annually.146K and I haven't touched my SMC. How unusual is this? I do think I will swap it out over the winter for piece of mind.
Inside the boot.You guys proposing silicone grease on the outside (exposed side) or inside of the boot?
Good question. I have ridden thousands of miles in the rain. Could that be it? I am sure there are some temp changes occurring in the SMC, producing moisture that is trapped underneath the cover. I would think it is all of the above.I replaced mine on a '05 garage kept bike this spring and it looked as good as new. Nice and shiny. So I wonder why some are corroding so bad and others aren't. I never power wash my bike, and I do ride in rain.
^^^^ This. With my high mileage '05 I am a prime candidate for repair but mine works like new and when I do the 12k brake fluid flush & replacement it always looks good under the boot. I ride in rain all the time and wash my bike OCD after almost every ride and live in a humid sub tropical climate. Mine has all the opportunity to go bad yet....I replaced mine on a '05 garage kept bike this spring and it looked as good as new. Nice and shiny. So I wonder why some are corroding so bad and others aren't. I never power wash my bike, and I do ride in rain.