What was found
FOLLOWUP TO REPORT OF #2 ENGINE WITH OIL POOLING IN EXHAUST AND LEAKING FROM EXHAUST PLUG DRAIN. GROUNDED - YES. ACCOMPLISHED AFT SUMP INSPECTION PER B737-800 AMM 79-00-00-200-806-F01 UP TO STEP E(2)(E). FOUND OIL LEAKING AT BOTTOM OF SUMP. PERFORMED TURBINE SHAFT EXTENSION TUBE SEAL TEETH PER AMM REF 72-55-00-200-801-F00 PARAGRAPH E.(3). FOUND MEASUREMENTS OUT OF LIMITS WITH MEASUREMENT OF 2.061, 2.073, 2.058. ALSO FOUND AIR OIL SEPARATOR ELONGATED. REMOVED AND REPLACE #2 ENGINE TRANSFERRED TO SHOP W/O FOR ENGINE S/N 892740, ENGINE REPLACED. SEAMC JEREMY NOTIFIED.