Master Cylinder
Replaced the master cylinder on my 1949 Ford. The fitting on the back of the cylinder where the brake light switch is will not stop leaking. I have a copper washer at the bolt before the fitting and also where the bolt enters the cylinder. No matter what i try it wont stop leaking. Mine you it's just a drop but any leak on the brake system is not good. Are those copper washers suppose to be there or not.
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