What was found
TYS, DURING A SCHEDULE ENGINE CHANGE ON THE LEFT ENGINE, THE FORWARD MOUNT YOKE, UPPER AFT ATTACHMENT BOLT HOLE WAS FOUND OVERSIZED, THE HAT BUSHING MOVES FREELY AND ROCKS WHILE IN POSITION. MAINTENANCE APPLIED AS700 SEALANT TO THE BUSHING AND REINSTALLED. EMBRAER AUTHORIZES TO FLY FOR 400 FLIGHT CYCLES TILL A PERMANENT DISPOSITION CAN BE SENT IAW-EMB-GST-1198/02. AN APPROVED REPAIR WAS OBTAINED, WHICH WILL REWORK THE AFFECTED YOKE IAW-EC5420-01035.