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Brake master cylinder renew


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Hi, ordered a new master cylinder today. I’ve tried to get the old one running. Did renew the inside callipers and springs. But my job was not a good one. Everytime I tried to bleed my lines, after some time, the new calipers got stuck in the metal casing. My bad. So, ordered a new one today. Just out of curiosity, anybody know how to make an old, bit rusty, cylinder running again? What tools can be used to make the the wall on the inside smooth enough?


Edited by mart010
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Ok, did the honing. Smooth surface now. Also did the sides of the metal parts that go into the tube. Will see how it works after some time. 

will keep the new parts on the shelf for now :)  

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Update. The parts inside the master brake cylinder got stuck again. The new master cylinder and brake servo arrived just in time. Installed all parts and bled the lines. Perfect for now. 

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The best for a cylinder will be having it bored out and a stainless steel liner fitted to it and then machine it to size again.

Honing a corroded cylinder works for a while, but the seals never last long in my experience.

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