Rotary fluid pressure device and improved parking lock assembly therefor

A rotary fluid pressure device comprising

• a housing member;
• a valve member, which provides fluid communication between the housing member and a gerotor displacement mechanism;
• a central opening being defined by a member selected from the group consisting of the housing member, the valve member, and any combinations thereof;
• an end cap being disposed adjacent the gerotor displacement mechanism, wherein the end cap defines a piston cavity;
• a release piston, which is moveable between a first position and a second position, being disposed in the central opening;
• a lock piston, which is moveable between a first position and a second position, being disposed in the piston cavity;
• a drive shaft disposed between the release piston and the lock piston, wherein the drive shaft defines an axial bore;
• and
• a brake pin, which is disposed in the axial bore of the drive shaft, defining a first axial end and a second axial end, wherein the first axial end is operably associated with the release piston and the second axial end is operably associated with the lock piston.