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Brake calliper dust seal conundrum

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neil.
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Joined: 24 Feb 2008
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PostPosted: 20:17 - 25 Aug 2010    Post subject: Brake calliper dust seal conundrum Reply with quote

Hi folks,

My compulsive obsessive nature is starting to get the better of me, so I'd better post this before I go quietly insane! Whilst doing a brake calliper seal change, I noticed a circlip in the groove where the dust seal sits inside the calliper itself, long after I had got rid of the old dust seal. Now, there's no mention of this circlip in the Haynes or Yamaha service book at all (all it says is to 'make sure the dust seal is properly installed'), so I'm wondering if I installed the dust seal correctly with the clip compressing the outermost segment of it into the calliper groove, which would seem the logical way of holding it in and creating a good seal. I've attached a rough mock-up diagram to show what I mean. Ta!
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CBT February 2008 | A2 June 2008 | Yamaha YBR125 (written off) | Honda CBF125 (current)
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Pete.
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Joined: 22 Aug 2006
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PostPosted: 20:34 - 25 Aug 2010    Post subject: Reply with quote

The clip should push the seal into the groove on the caliper, to stop it popping out when the pistons are extended.
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132.9mph off and walked away. Gear is good, gear is good, gear is very very good Very Happy
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TQ
Trackday Trickster



Joined: 17 Dec 2009
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PostPosted: 10:00 - 26 Aug 2010    Post subject: Reply with quote

To save opening another thread for a similar question:

I'm installing new seals in my callipers tonight, what did you use to lubricate them?

Haynes says use brake fluid but yamaha have sent me some red stuff with the new seals (red rubber grease?).
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First Bike :Gilera DNA 50 | Second: Imported 1989 NSR125
Third: 1998 Yamaha XJ600N | Currently: 1999 Yamaha FZS600
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DrDonnyBrago
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Joined: 03 Jan 2010
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PostPosted: 10:11 - 26 Aug 2010    Post subject: Reply with quote

TQ wrote:
To save opening another thread for a similar question:

I'm installing new seals in my callipers tonight, what did you use to lubricate them?

Haynes says use brake fluid but yamaha have sent me some red stuff with the new seals (red rubber grease?).


I use red rubber grease on my brakes, if yamaha have sent it too then I would go with their suggestion Thumbs Up .
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TQ
Trackday Trickster



Joined: 17 Dec 2009
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PostPosted: 10:13 - 26 Aug 2010    Post subject: Reply with quote

That's what I was thinking so just kinda smear the seals in it before I pop them back into the calliper?
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First Bike :Gilera DNA 50 | Second: Imported 1989 NSR125
Third: 1998 Yamaha XJ600N | Currently: 1999 Yamaha FZS600
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neil.
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Joined: 24 Feb 2008
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PostPosted: 10:58 - 26 Aug 2010    Post subject: Reply with quote

I smeared brake fluid on my seals as they didn't come with any grease, but I do use rubber grease on the sliders and dust boots that cover them. Brake is now working fantastically as well. Thumbs Up
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CBT February 2008 | A2 June 2008 | Yamaha YBR125 (written off) | Honda CBF125 (current)
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Serendipity
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Joined: 07 Jun 2006
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PostPosted: 11:19 - 26 Aug 2010    Post subject: Reply with quote

I got fed up with paying a fortune for miniscule sachets of red rubber grease so I recently invested in a 500g tub from Opie Oils. Just rebuilding my FireBlade callipers right now.
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2007 CBF1000 & 2016 CBF1000F - Commuter heaven | 1994 CBR600FR - Awaiting defibrillation
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