C3.4 Engines for Caterpillar Built Machines Caterpillar

Illustration 1	g00987949

Prior to assembly, apply engine oil to the bearing.

(1) Install the bearing cap to the connecting rod and tighten the cap nuts to the following torque. ... 49 to 59 N·m (36 to 44 lb ft)

Inside diameter of the piston pin bearing

Nominal value ... 30 mm (1.18 inch)

Standard at assembly ... 30.020 to 30.045 mm (1.1819 to 1.1829 inch)

Clearance between the piston pin and the piston pin bearing

Standard at assembly ... 0.020 to 0.051 mm (0.0008 to 0.0020 inch)

Service limit ... 0.120 mm (0.0047 inch)

End play of the connecting rod that is attached to the crankshaft.

Standard at assembly ... 0.15 to 0.35 mm (0.0059 to 0.0138 inch)

Service limit ... 0.50 mm (0.020 inch)