Crankshaft Main Bearing: Service and Repair

Fig. 14 Main bearing selection chart. Main bearing No. 1:

Fig. 15 Main bearing selection chart. Main bearing Nos. 2 through 6:

Fig. 16 Main bearing selection chart. Main bearing No. 7:

The main bearing journal size (diameter) is identified by a color coded paint mark on adjacent cheek toward flanged (rear) end of crankshaft, except for rear main journal which is on crankshaft rear flange. Color codes used to indicate journal and corresponding bearing sizes are listed in Figs. 14 through 16.