What was found
AFTER REMOVAL OF ALL CYLINDERS DUE TO TOP PISTON RING PLATING FLAKING, SDR A6YA2010052738221, ALL LIFTERS WERE REMOVED & INSPECTED IAW SID 05-1A. NR 2 & NR 5 EXHAUST VLV LIFTERS WERE FOUND TO HAVE FULL FACE SPALLING AS PICTURED IN SID 05-1A FIG 6 AND FIG 8. ALL OTHER EXHAUST LIFTERS HAD CORROSION PITTING TO SOME DEGREE. ALL LIFTERS WERE REMOVED & SENT TO THE MANUFACTURE FOR INSPECTION. THE CAMSHAFT WAS INSPECTED IAW SID 05-1A & FOUND TO BE IN SERVICEABLE CONDITION. THIS ENG WAS INSTALLED ON 1-25-2012 IN NEW CONDITION.