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REF: Tools - 130

Brakes: Brake Cylinder Hone

  • This zero-cost brake cylinder hone works better on small motorcycle master cylinders than the proper tool you buy at the auto parts store. It fits inside 13-15 mm master cylinders much easier and does not fly apart and scar up the aluminum cylinder bore. 1)
Use a piece of 3/8“ wooden dowel about 8” long.
Cut a slot into one end about 3/4“ long. 2)
Insert a piece of 800 grit wet sandpaper
(folded double) in the slot. 3)
Roll it around so it matches the direction of rotation
of your electric drill so it goes with the flow,
not against it. 4)
Hold the master cylinder firm but don't crush or
distort it, and insert the special tool. 5)
Using a drill, faster you spin it, the more the
sandpaper is flung out against the cylinder. Check
the bore frequently as it rapidly removes the soft
aluminium so it does not take long to get the
cylinder nice and smooth again. 6)


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