C27 and C32 Generator Set Engines Caterpillar

Connecting Rod and Main Bearing Journals

Usage:

C27 2A3

Connecting Rod Bearing Journals

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Table 1
Specification for 219-4454 Crankshaft
Item	Qty	Part	Specification Description
Refer to the Guideline for Reusable Parts for more information.
-	-	-	Diameter of crankshaft journal (bearing surface) for connecting rod (original size) is 97.028 ± 0.020 mm (3.8200 ± 0.0008 inch).
Clearance between new bearing and new journal is 0.070 to 0.178 mm (0.0028 to 0.0070 inch).

Main Bearing Journals

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Table 2
Specification for 219-4454 Crankshaft
Item	Qty	Part	Specification Description
Refer to the Guideline for Reusable Parts for more information.
-	-	-	Diameter of crankshaft journal (bearing surface) for main bearings:
			Original Size journal is 120.650 ± 0.020 mm (4.7500 ± 0.0008 inch).
			Undersize Journal 0.63 mm (0.025 inch) is 120.015 ± 0.020 mm (4.7250 ± 0.0008 inch).
			Undersize Journal 1.27 mm (0.050 inch) is 119.380 ± 0.020 mm (4.7000 ± 0.0008 inch).
Clearance between new bearing and new journal for main bearing with two bolts is 0.076 to 0.186 mm (0.0030 to 0.0073 inch).
Clearance between new bearing and new journal for main bearing with four bolts is 0.071 to 0.178 mm (0.0028 to 0.0070 inch).

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