Brake caliper rebuild question

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Mar 20, 2016 | 10:02 PM

68sting

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From: Colorado Springs

Brake caliper rebuild question

Im rebuilding my calipers and the lip seal must have deteriorated in the bore. I have a black ring that I need to get out. Can I use some 600 grit sand paper to clean up the bores?

Mar 21, 2016 | 01:24 AM

Frank_Nesta

Racer

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From: Los Angeles CA

Quote:

Originally Posted by 68sting

Im rebuilding my calipers and the lip seal must have deteriorated in the bore. I have a black ring that I need to get out. Can I use some 600 grit sand paper to clean up the bores?

I am not sure I understand your question. Is the black ring a stain or is it a physical lump of black rubber from the seal? If it is from the seal I would use a knife to scrap the excess. And hone the surface smooth.

Mar 21, 2016 | 10:41 AM

68sting

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From: Colorado Springs

I would say more of a stain. What would you hone it with?

Mar 21, 2016 | 10:46 AM

GUSTO14

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From: eastern NC

Quote:

Originally Posted by 68sting

I would say more of a stain. What would you hone it with?

Have you tried a solvent like lacquer thinner? If that doesn't work, I'd try something like chrome polish before I would go to a sandpaper.

Good luck... GUSTO

Mar 21, 2016 | 11:10 AM

Frank_Nesta

Racer

Joined: Mar 2011

Posts: 480

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From: Los Angeles CA

I would try the lacquer thinner. If that does not work I would leave it alone.

FYI. This is what a brake cyclinder hone looks like.

https://www.zoro.com/westward-brake-...Q&gclsrc=aw.ds

Mar 21, 2016 | 11:18 AM

Tampa Jerry

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From: Temple Terrace Florida

Brakes

If you are referring to a rubber seal that is stuck to the bores of the caliper, I have used paint remover. It works effectively and quickly. I follow up with a good clean with soap and water and air dry with compressed air. I next use denatured alcohol with pipe cleaners to clean the passages. Lastly, I dry using compressed air. I assemble using clean Dot 3/4 brake fluid. Good luck. Jerry

Mar 21, 2016 | 12:50 PM

Easy Mike

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From: Southbound

Cruise-In II Veteran

Your ring could be where moisture leaked past the seal over the years. A brake hone will clean it up.

Mar 22, 2016 | 02:03 AM

68sting

Thread Starter

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Joined: Oct 2008

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From: Colorado Springs

I thought I had read not use a brake hone on SS sleeved calipers. I did see a video that mentioned 600 grit emery cloth. I have a brake hone so that is an option.