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Discussion Starter #1
Hey guys,

I'm new here being I recently acquired a '85 Vulcan 700. The hand brake wasn't returning all the way (so the brake light stayed on). Web search shows the piston is stuck. So I'm trying to break it down to clean it up and rebuild if necessary.

So I pull the master cylinder off my bike. I remove the white plastic retainer. Get the dust boot off and I see this (see pics). I was expecting a snap ring clip but is this part of the master cylinder housing? is there anything to remove here or now I just pull the piston out now?

I have a Clymers manual on the in the mail but I'd appreciate any and all advice.

https://picasaweb.google.com/lh/photo/654dVAKRLRxY9A16VIT_TisUO_K4A19Xk24UYSbRtZw?feat=directlink

https://picasaweb.google.com/lh/photo/lHfPyToDHVu5bmN0MKIGCysUO_K4A19Xk24UYSbRtZw?feat=directlink
 

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Linkmeister Supreme
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7,960 Posts
Welcome to the Vulcan madness primerib.
I can`t help you with the MC as I have never worked on one.
But someone will show up soon who can answer your questions. :smiley_th
 

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..have a vulcan good day!
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4,508 Posts
Hey guys,

I'm new here being I recently acquired a '85 Vulcan 700. The hand brake wasn't returning all the way (so the brake light stayed on). Web search shows the piston is stuck. So I'm trying to break it down to clean it up and rebuild if necessary.

So I pull the master cylinder off my bike. I remove the white plastic retainer. Get the dust boot off and I see this (see pics). I was expecting a snap ring clip but is this part of the master cylinder housing? is there anything to remove here or now I just pull the piston out now?

I have a Clymers manual on the in the mail but I'd appreciate any and all advice.

https://picasaweb.google.com/lh/photo/654dVAKRLRxY9A16VIT_TisUO_K4A19Xk24UYSbRtZw?feat=directlink

https://picasaweb.google.com/lh/photo/lHfPyToDHVu5bmN0MKIGCysUO_K4A19Xk24UYSbRtZw?feat=directlink
PrimeRib, I had the same problem on my 86, I disassembled the MC as you have, cleaned that area up, used brake fluid around and worked piston in/out till it moved smoothly/freely. New fluid and no problems past 14 months (fingers crossed). The fluid change also resolved my caliper sticking problem. Good Luck
 

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gun slinger
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1,110 Posts
was the brakes dragging or just the stop lamp staying on? if just the light theres a spring in there that gets weak replace it .
 

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Discussion Starter #5 (Edited)
WilliamTech, thanks for the tip. That worked for me too. Just cleaned up and poured some brake fluid on the outside of the master cylinder at the piston and worked it free. works great now. thanks again
 
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