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Post subject: 31k rear brake calliper stripping question
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kevemo  Regular Racer Joined: 16 Aug 2003 Total posts: 289 Location: hull |
how do you get the pistons out of the rear caliper have got them moving no probs by pumping without pads but my question is i can get one out but then you cant pump the other one out cos of the fluid hole behind the one that is out  i am stumped help
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Posted: Thu Jun 12, 2008 7:37 pm
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Post subject: Piston removal
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johnlc Powerband Master Joined: 14 Oct 2006 Total posts: 794 Location: John O'Groats |
I had to do my harrison 4 pots today ,the way i did it was to start pumping the pistons out ,if any are sticking put spacers between the good ones and the disc to stop them coming out until the bad ones start moving as far as the other ones then remove spacers and they should come ok 
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Posted: Thu Jun 12, 2008 7:54 pm
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ShytalkRegular Racer Joined: 13 May 2005 Total posts: 337 Location: Staffordshire |
Kev,
I normally do mine off the bike, get them both moving first, spray the pistons with WD40 or whatever to get some lubrication around the seals, heat with a hot air gun as well. When they both move a bit I lock 1 piston in place with a clamp and pump air into the bleed nipple hole (having put a bolt into the brake line hole) I use a car foot pump with a plastic attachment on it and have nearly always managed to get them out. Once 1 side is out; I personally split the caliper and cover the joining holes with my fingers and pump the other half out, it is a bit fiddly but does work, other people use compressors but you have to be very careful as the pistons can come out as projectiles. With it split its easier to clean and replace seals before re joining the 2 halves again.
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Posted: Thu Jun 12, 2008 8:57 pm
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Post subject:
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russ35031 Daily Burner Joined: 28 Oct 2007 Total posts: 130 Location: Northants UK |
Do mine the same way as shytalk, always works but i use a small bit of plastic to block the galleys and then bolt them back together, blast of air and they pop out, if using a compressor as I do watch your fingers as they shoot out like bullets.
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Posted: Thu Jun 12, 2008 9:06 pm
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Post subject:
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kevemoRegular Racer Joined: 16 Aug 2003 Total posts: 289 Location: hull |
i fell a bit stupid now  didnt realise they split in half doh
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Posted: Fri Jun 13, 2008 3:29 pm
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