Crankshaft Main Bearing: Service and Repair

Fig. 13 Main bearing selection chart. 4-150 No. 1 main bearing:

Fig. 14 Main bearing selection chart. 4-150 Nos. 2, 3, 4, 5 main bearings:

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. 13 and 14.