PurposeUSED TO PROTECT THE LANDING GEAR AXLE, THE LANDING GEAR AXLE EXTERNAL THREADS, AND THE TPIS SENSOR DURING THE REMOVAL/INSTALLATION OF THE WHEEL AND BRAKE ASSEMBLYAirplane767, 777-200, 777-200ER, 777-200LR, 777-300, 777-300ER, 777-8, 777-9, 777F, 787-8Usage CodeMAINTENANCEAlternate/Substitute Part NumberST9501DF 