What was found
WHILE EN-ROUTE (ANC-JFK) RECEIVED CAUTION "RESERVE BRAKES/STRG" + "HYD QTY LOW C" FOLLOWEED BY "HYD PRESS SYS CÏ¿½. PERFORMED CHECKLIST AND SHUTDOWN ELECT C2 PUMP, THEN AIR C1, THEN AIR C2 HYDRAULIC PUMPS. DIVERTED TO CVG. FOUND LH MLG STEERING ACTUATOR PRESSURE LINE LEAKING. REPLACED STEERING ACTUATOR PRESSURE LINE IAW B777 AMM 32-53-03 AND PERFORMED DPI INSPECTION AND CHECK OF ACMP & ADP'S IAW B777 AMM 29-11-00. OPERATIONAL CHECK GOOD AND AIRCRAFT RETURNED TO SERVICE.