Quote:
Originally Posted by Tiger 55
Gotcha. What am I using there apart from the brake cleaner? Is scotchbrite OK or too abrasive?
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If you are careful you can chip away with something like a small screwdriver etc but take care as its alluminium and the corrosion build up can be tough.
I found that these Dremel type tools are pretty good. You can often get a nylon stiff brush head that looks a little like a miniature chimney sweep brush head. Perfect for cleaning out the grooves.
After you've cleaned them and before you fit the seals make sure that the piston sliding surfaces are free from damage (e.g. plier marks from where they may have been dragged out of the calipers
) and that they slide freely in and out. If they are at all stiff then further cleaning is needed, particularly to the thin raised section of the bore that sits between the dust seal groove and piston seal groove.
If you have one then a dentist type mirror can be really useful to see inside the seal grooves to check for corrosion build up. Its usually white and can be difficult to see.
Mike