C4.4 Engines for Caterpillar Built Machines Caterpillar

Maximum permissible wear of a bearing journal on a new connecting rod ... 0.04 mm (0.0016 inch)

Width of the connecting rod bearing journals ... 40.348 to 40.424 mm (1.5885 to 1.5915 inch)

Surface finish of connecting rod bearing journals and radii ... Ra 0.0025 microns (10 µ inch)

The Shell for the Connecting Rod Bearings

Standard Bearing Shells

Thickness at center of the shells ... 1.995 to 2.002 mm (0.0785 to 0.0788 inch)

Width of the connecting rod bearing shells ... 31.47 to 31.73 mm (1.2390 to 1.2492 inch)

Clearance between the bearing shell and the connecting rod bearing journals ... 0.031 to 0.078 mm (0.0012 to 0.0031 inch)