What was found
DURING CRUISE, AN EICAS MESSAGE HYD QTY LOW1, COMPLETED CHECK LIST. LATER SYS1 QTY WENT TO ZERO. EICAS MESSAGE HYD SYS PRESS 1, COMPLETED CHECK LIST. LATER HAD AN EICAS MESSAGE HYD SYS 1 OVERHEAT, COMPLETED CHECK LIST. FOUND HYD LEAK FROM RT MLG WW TRUCK POSITION ACTUATOR FUSE. RIGHT O-RING AND BACK UP RING OF POSITION ACT FUSE. THEN NR 1 HYD SYS LEAK CHECK OK IAW AMM 32-13-24-501.