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 Post subject: sticky m965 calipers
PostPosted: Tue Nov 06, 2012 11:17 am 
Retro Guru
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Joined: Tue Aug 14, 2012 4:51 pm
Posts: 2277
Location: Llantwit Major
My XTR m965 disc calipers have sticky pistons. How easy are they to strip and service? Or would a squirt of WD40 help?


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PostPosted: Tue Nov 06, 2012 10:34 pm 
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Joined: Wed Jan 18, 2012 12:37 pm
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Location: Derby
Dont use wd40 as it might damage the seals on the pistions and that would be terminal as new seals aren't easy to get.

I would hold one position in the bore and pump the lever to get the other on out as far as you dare. Then clean it with lint free rag , and lube it with mineral brake oil. Push it back into the bore and repeat , after a couple of cycles it should free up. If it does repeat on the other piston .

If this doesn't work then a strip will be required I'm afraid


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PostPosted: Tue Nov 06, 2012 10:44 pm 
retrobike rider
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Joined: Wed Apr 15, 2009 1:08 pm
Posts: 3117
Location: Woking
There is no rebuild kit available for these calipers, if you strip and rebuild them then all you can you is re-assemble with the same seals. Mine were prone to sticking, even when rebuilt.

Sorry

SP


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