PVPV-D Matco park valve

[Ron B.]

We had a bear of a time getting our right side park valve function to work properly. Left side was obtained in less than two minutes. After a lot of testing and removal of components I do believe we found our problem. The little check valve that is under the steel AN fitting has a square shank. There were burrs on the end that rides on the valve cam. We believe the burrs were preventing the valve from returning to the closed position by rubbing on the sides of the cam rather than falling into the cam channels.
Perhaps this tip could save someone some time trouble shooting.
Ron