What was found
TAXING IN AFTER LANDING, WHILE MAKING THE LEFT TURN FROM TAXIWAY C ONTO C8, THE TILLER LOST RESPONSIVENESS FOLLOWED BY A MASTER CAUTION ALERT AND L HYD SYS PRESS EICAS MESSAGE. VERIFIED ZERO HYD QUANTITY AND PRESSURE. COORDINATED A MX TOW IN WITH COMPANY AND GROUND. REMOVED AND REPLACED HYDRAULIC FLEXIBLE LINES AT ELBOW BACE4BN0404T IAW AMM 20-10-10-4. REPLENISHED LEFT HYDRAULIC SYSTEM IAW AMM 12-12-01. PERFORMED LEAK AND OPS CHECK IAW AMM 32-32-00-5. OPS CHECK GOOD, NO LEAKS OR DEFECTS NOTED. CYCLED LEFT ELECTRIC HYDRAULIC MOTOR IAW AMM 29-11-00-5, OPS CHECK GOOD, NO DEFECTS NOTED. PERFORMED #1 ENGINE IDLE RUN IAW AMM 71-00-00-2. OPS CHECK GOOD, NO DEFECTS NOTED. REINSPECTED LEFT HYDRAULIC SYSTEM DPI'S IAW AMM 29-11-00-6, NO DEFECTS NOTED. SERVICED LEFT HYDRAULIC SYSTEM TO FULL AFTER OPS CHECKS IAW AMM 12-12-01. A/C OK FOR SERVICE.