What was found
AIR VALVE CAP WAS DROPPED INSIDE NR 2 WHEEL ASSY, WHEEL HAD TO BE REMOVED TO ACCESS THE CAP. ON REMOVAL OF THE WHEEL, THE BEARING WAS VERY DIFFICULT TO REMOVE, THERE WAS NOT SUFFICIENT GREASE. NR 3 AND NR 4 WHEEL ASSY WERE CONFIRMED TO HAVE BEEN REPLACED IN THE LAST MONTH, NR1 AND NR2 WHEELS WERE LAST REPLACED BY THE PREVIOUS OPERATOR. NR2 WHEEL AND BEARING WERE REPLACED WITH SERVICEABLE UNITS, NR 1 WHEEL WILL BE REMOVED AND INSPECTED.