C2.2 Engines for Caterpillar Built Machines Caterpillar

Connecting Rod Bearing Journal

Usage:

239D BL9

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Table 1
Diameter of the Connecting Rod Bearing Journals
Journals	Diameter	Service limit
Standard	51.964 to 51.975 mm (2.04582 to 2.04626 inch)	51.90 mm (2.0433 inch)
Undersize 0.25 mm (0.010 inch)	51.714 to 51.725 mm (2.03598 to 2.03641 inch)	51.65 mm (2.0335 inch)
Undersize 0.50 mm (0.020 inch)	51.464 to 51.475 mm (2.02614 to 2.02660 inch)	51.40 mm (2.0236 inch)⁽¹⁾

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⁽¹⁾	If the diameter of the connecting rod bearing journal is less than the maximum undersize service limit, the crankshaft must be replaced.

Clearance between the connecting rod bearing and the connecting rod bearing journal

Standard clearance ... 0.035 to 0.085 mm (0.00138 to 0.00335 inch)

Service limit ... 0.20 mm (0.0079 inch)

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