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Clutch master cylinder overhaul #2: tough match



I disassembled the removed clutch master cylinder.


And I found that the piston was heavily rusted.


I tried to hit it with a hummer,


Pushed the piston using the vise clamp like this.  However, the piston was heavily sticking by rust and it could not to be moved today.

The brake master cylinder was replaced in the past, however, the clutch master cylinder was not.  Therefore, the condition of the clutch master cylinder might be worse.

Tentatively, I would spray the rust-penetration lubricant from both sides of the piston and try again in a few days.


If it doesn’t work, I would give up the overhaul and order the new part.



(My original blog was written on 2nd July 2009)
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