Main Bearing

Component Illustration:

COLOR CODING OF MAIN BEARING AND BIG-END BEARING SHELLS

Standard bearing shells are Yellow-Yellow or Red-Blue. Red shells are thinnest, yellow are 0.005 mm (0.0002 in) thicker than red, and blue are 0.005 mm (0.0002) thicker that yellow. Only yellow bearing shells are available as a spare part.

1 Crankpin
2 Main journal