What was found
DURING MAJOR CHECK, PERFORMED TASK CARD 731000-11-1, FOUND FUEL FILTER CONTAMINATED. FUEL FILTER ELEMENT WERE EVALUATED IAW AMM 73-12-42-210-061-A PARAGRAPH A ITEM (2)REV.40 01. LT AND RT ENGINE FUEL FILTERS ELEMENT WERE REPLACED. LT FUEL COOLED OIL COOLER WAS REMOVED, INSPECTED, AND REPLACED IAW AMM TASK CARD 79-21-43-400-010B. IAW AMM TASK CARD 28-21-51-000-002-A FUEL TANKS WERE OPENED, INSPECTED CLEANED AND CLOSED. IAW AMM TASK CARD 28-21-51 FUEL PUMPS WERE REMOVED, INSPECTED, CLEANED AND INSTALLED. IAW AMM TASK CARD 73-13-42-720-010-A AND AMM TASK CARD 71-00-00-710-012 ENGINES FUNCTIONAL TEST OF THE FUEL RECIRCULATION COOLING SYSTEM AND IDLE LEAK CHECK WERE SATISFACTORY. THE AIRCRAFT RETURNED TO NORMAL OPERATION.