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Resetting Shimano alfine calipers

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kwwmackenzie Offline

Posts: 10
Joined: Jul 2011
Post: #1
Resetting Shimano alfine calipers

I went to replace the pads in my rear brakes last night. I have shimano alfine s500 calipers. When I tried to reset the calipers I used a hard plastic tyre lever, same as I did with the front brakes... but the calipers wont move right back. They seem to be stuck. I've got the reservoir cap off at the brake level and when I try and push the caliper back you can hear a slight noise from the reservoir (as I'd expect when doing this). I can move them about 1mm then they just go back, essentially meaning I cant put new pads in. Any thoughts/suggestions would be appreciated.
Oct 3, 2012 11:57 PM
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RobAR Offline
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Mountain Home, AR
Posts: 725
Joined: Sep 2010
Post: #2
RE: Resetting Shimano alfine calipers
It sounds to me like your pistons have been pushed beyond the cylinder walls and air has gotten into the system from the worst possible place. If I'm reading you correctly, you are looking at a full flush of the system. That noise that you hear is bubbles - trapped air.

Wheelies don't pop themselves. (from a QBP fortune cookie)
Oct 6, 2012 06:35 PM
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