Case 1155e Low PSI Trans.

Maybe you guys can help. 91 model 1155e loader losing pressure after 45min operation. Replaced charging pump, changed tch fluid, checked screen ontop of control valve, cleaned filter at charging pump and inspected modulator valve. Checked springs on pressure regulator and relief valve on converter. Going from 305 psi to 100 psi continuous after 45min 1800 rpm. Still can operate all lever functions high, low forward, reverse and spin. but have no right or left brake just both brakes at one...

Case 1155e Low PSI Trans.

Case 1155e Low PSI Trans.