What was found
L HYD QTY EICAS STATUS PG SHOWED 0.0RF OVRHD PANEL QYT LT TROUBLESHOT PER FIM 29-11 TREE 823. COMPARED HYD QUANTITY READING IN FLIGHT DECK WITH READING ON REMOTE SERVICING PANEL. READINGS WITHIN LIMITS. REMOVED AND REPLACED HYDRAULIC FLUID QUANTITY MONITORING UNIT IRW AMM 29-33-01.PARTS USED: 1869947,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1869947 SN OFF 0209 IPC REFERENCE # 29-33-01-01 MONITOR, HYDRAU OFF 76-2932-9-0002 9004 ON 76-2932-9-0002 0511 REMOVED AND REPLACED THE LH RESERVOIR HYDRAULIC FLUID QUANTITY TRANSMITTER PER FIM 29-11 TASK 832 IRW AMM 29-33-02. CLEANED AND INSPECTED CANNON PLUG AT TRANSMITTER. NO DISCREPANCIES NOTED. PERFORMED ENGINE 1 AND 2 ENGINE RUN WITH U346472. FAULT DID NOT REOCCUR. OPS CHECK GOOD AT THIS TIME.PARTS USED: 1567550,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1567550 SN OFF 5035 IPC REFERENCE # 29-11-20-01 TRANSMITTER, HY OFF 99-2936-9-9002 5034 ON 99-2936-9-9002 9020 PHOTOS DURING ENGINE RUN ADD REF LOG PAGE 9566427 FOR CONFERMATION FLIGHT.