Chris:

On our Heirtage 1955we are having problems with the right brake.  It will build up pressure, or at times will not release the pressure after you apply the brake.  It was doing it last year on WHO tractor ride in Iowa, so we capped off the line which &quot;cured&quot; the problem, but did not fix it since we have no right brake.

My brother Greg claims that he had a similar problem with his 1955 back when they were farming.  Dad's 1955 never had the problem.  Greg says if he remembers correctly, Oliver came out with bigger brakes lines which would let the pressure off of the brake.  When he put them on his it corrected the problem.  Have you heard of such a fix?  Second question is there a valve in the brake system that can stick?  We don't have a problem with the left brake which indicates to me it is not a brake line problem.  However it is a 1970 which was early in the production so maybe they did change the lines.  

Thanks for any advice you may come up with.

Bill Brandt