C3.4B Engines For Caterpillar Built Machines Caterpillar

Maximum permissible wear of a bearing journal on the crankshaft when a new connecting rod is installed ... 0.04 mm (0.00157 inch)

Width of the connecting rod bearing journals on the crankshaft ... 37.962 to 38.038 mm (1.4946 to 1.4976 inch)

Radius of the fillet of the connecting rod bearing journals ... 1.6 to 1.7 mm (0.06299 to 0.06693 inch)

Surface finish of connecting rod bearing journals ... Ra 0.3 microns maximum

Surface finish of radii ... Ra 0.3 microns maximum