> A list of questions came to mind reading today's posts.
>
>
> 4. So polishing is the answer to rebuilding clutch cylinder,
> now you tell me... and I spent so much time honing those things..
> again, again, again, bought new $$.
Well, if this worked for TeriAnn I supposed that's the ultimate test,
but when I rebuilt my hydraulics I did a bit of research on the subject
and this is contrary to what all the brake books say. The purpose of
the cross-hatching is so that fluid adheres to the cylinder walls and
provide lubrication for the seal. When a master cylinder is
manufactured, the bore is formed by pulling a "ball" of the correct
diameter through a pre-drilled or perhaps cast hole. The cylinder is
heated to a temperature just below melting. The result is a
microscopically textured surface to which fluid can adhere but which
appears to be smooth to the naked eye. Perhaps TeriAnn was referring to
an aluminum cylinder. This type requires a special, very fine hone.
Apparently they don't take too well to rebuilding no matter what
technique is used. BTW, I've had good results using a hone on steel
cylinders on non Brit cars. Since the ones on my snake were aluminum, I
replaced them with new ones.
Roland
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