Master Cylinder Rebuild, Sigh...

[mmattockx]

So, I figured this afternoon was a good time to rebuild the front MC on my 1100E. I had a replacement OEM cup and piston set, room in the garage and time on my hands...

I got the snap ring and washer out without significant trouble, but the metal gland that sits under the washer is frozen solid with corrosion from the looks of it. I hit it with penetrating oil, then used a punch to try and get it moving a bit. No go, still completely solid. Anybody have any other ideas on getting it moving? If it wasn't for the sight glass in the reservoir body I would hit it with a propane torch but that seems like a very poor idea with plastic involved.

Aaargggh!


Mark

[Nessism]

Grab the plunger with some pliers, push in, then pull back as hard as you can.

[mmattockx]

Grab the plunger with some pliers, push in, then pull back as hard as you can.

It was much worse than that. I went over to a buddy's house and we got it by clamping a set of vise grips on the piston rod, clamping the vise grips in a vise and then using a pry bar on the MC body to finally dislodge it. The good news is the bore is fine and the rind of corrosion that was holding the gland in cleaned up very well with a bit of scotchbrite. The way we were fighting it I figured I would be shopping for a replacement tomorrow morning.

Thanks for the reply, Ed.


Mark