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MG MGA - rear brake cylinder rebuild

Any trick to removing the piston/dust cover from the rear brake cylinder, mine seems to be really stuck on.

Thanks, George
G Goeppner

George,
It has been covered somewhere before, but place the cylinder in a pot of boiling water (check with the wife first as to which pan to use).. the thermal expansion properties of the piston, as opposed to the body, are different, and the parts should come apart.
Cheers, Doug
Doug Schimke

If it doesn't come out with high pressure air, connect a grease gun and pump it out.
Barney Gaylord

Hi George. Your cylinder is seized because the cylinder is aluminum, and the piston is steel. The 2 metals interact to create white corrosion that locks the piston in the cylinder. Once you get the cylinder apart, you may find that the corrosion has pitted the cylinder bore, making a rebuild impossible, unless you have the cylinder sleeved with brass or stainless steel. Good luck, GLenn
Glenn Hedrich

This thread was discussed between 01/09/2009 and 08/09/2009

MG MGA index

This thread is from the archive. The Live MG MGA BBS is active now.