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BEARINGS-MAIN STANDARD PROCEDURE - MAIN BEARING SELECTION NOTE: There are three different possibilities for the upper main bearings and five different lower main bear- The lower main bearing identification is stamped in the nose of the crankshaft (1). There are 5 different bearing CRANKSHAFT IDENTIFICATION LOWER CRANKSHAFT BEARING SELECTION JOURNAL DIAMETER GRADE DIMENSION LOWER MAIN BEARING SIZE CLASSIFICATION LOWER MAIN BEARING DIMENSION 0 52 mm 0 (Pink or Red) 2 mm 1 52 mm 1 (Black) 2 mm 2 52 mm 2 (No Color) 2 mm 3 52 mm 3 (Green) 2 mm 4 52 mm 4 (Blue) 2 mm The upper main bearing shell identification is located in the middle of cylinder block on the right side of the engine UPPER MAIN BEARING SELECTION CYLINDER BLOCK IDENTIFICATION UPPER CRANKSHAFT BEARING SELECTION MAIN BEARING GRADE DIMENSION UPPER MAIN BEARING SIZE CLASSIFICATION UPPER MAIN BEARING DIMENSION 1 56 mm 1 (Black) 2 mm 2 56 mm 2 (No Color) 2 mm 3 56 mm 3 (Green) 2 mm PM ENGINE 2.4L WORLD 9 - 1723 |