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I just bought a brake hone with 220 grit stones. The finish feels a bit rough. There are 400 grit stones available. How fine of a finish do I need to get a good seal?
These are old Freeline’s with 7/8″ Akron Rubber Products cup seals.
Thanks for some heads up.
Bore needs to be polished.
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Thanks guys. Since I had already d0ne the 220 grit hone, I went through it with 400 grit sandpaper. Felt really smooth and the pistons travel freely now vs hanging up before on the 220 honed surface. And the brakes lock up when you want them to…
They make brake grease that helps it retract easy.