Parking Brake Valve trouble potential

[Charlie Lyford]

Hello,
I went through this on my P337. The parking brake valve can leak internally but not let fluid out. With one of the reservoirs being higher than the other the fluid gravity drains out of one and over fills the other. You will find the missing fluid in the insulation outboard of your left foot, it will hide a lot of fluid. New seals in the valve stopped the problem.