What was found
DURING CRUISE, FL350, ECAM WARNING WITH GREEN HYD SYSTEM LOW QUANTITY LEVEL WHICH WAS ALSO SHOWING ON HYD PAGE OF ECAM. ACCOMPLISHED QRH PROCEDURE TO INCLUDE MANUAL GEAR EXTENSION, QTY INCREASED UPON ENGINE SHUTDOWN. REMOVED AND REPLACED THE GREEN PRESSURE TRANSMITTER 17WV IAW MM 29-32-13-04, LEAK CHECKED GOOD, CHECKED PRESSURE ON ECAM GREEN PUMP READS 3600 PSI SYSTEM SHOULD READ 3000 PSI PLUS OR MINUS 200 PSI.