Parking Break wont stay up!

[May70]

My parking brake pedal (pedal with release pull type) has no retention and wont stay up on its own. I tied it up to drive it a little after purchasing. I have looked at the diagram in the service manual but dont see how it is mechanically retained. I think there should be a spring somewhere in this setup but I only see one on the drivers side which is connected to the release pull.

The gears are mostly covered by a shield so I cannot see the components or if a spring is broken.

Anyone familiar? Thanks