JD 4310 Brakes Sticking...need ideas

[MAD MARK]

I took apart the front cowl and lubed/greased all springs and pivot points for the rear brakes that are sticking. I lubed/greased the joints and rods under the foot panel as well.

The rear brakes still sticking until 15-20 mins into use then they free up. It's bad enough that if I'm going down a hill and hit the clutch on the epowerreverser it will drag the right rear wheel.

Any help?

 

[Olsen]

My 4400 return springs wore and broke.
They are up high near the pedals on my hydro.

 

[MAD MARK]

I was thinking about replacing all the springs but they do seem alright. And it's weird they started to stick all of a sudden, not intermittently.