C3.3 Industrial Engine Caterpillar

Crankshaft - Steel Crankshaft

Usage:

C3.3 E3K

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Illustration 1	g06060630

The crankshaft for the three Cylinder engine

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Table 1
The undersize diameter of the Crankshaft Journals
NUMBER	0.25 mm (0.010 inch)	0.51 mm (0.020 inch)	0.76 mm (0.030 inch)
1	75.926 mm (2.989 inch) to 75.905 mm (2.988 inch)	75.672 mm (2.979 inch) to 75.651 mm (2.978 inch)	75.418 mm (2.969 inch) to 75.397 mm (2.968 inch)
2	63.236 mm (2.490 inch) to 63.216 mm (2.489 inch)	62.982 mm (2.480 inch) to 62.962 mm (2.479 inch)	62.728 mm (2.470 inch) to 62.708 mm (2.469 inch)
3	39.47 mm (1.554 inch) maximum	N/A	N/A
4	44.68 mm (1.759 inch) maximum	N/A	N/A
5	40.551 mm (1.597 inch) maximum	N/A	N/A
6	133.17 mm (5.243 inch) Do not machine this diameter.	N/A	N/A
7	3.68 mm (0.145 inch) to 3.96 mm (0.156 inch)	N/A	N/A

Refer to table 2 for the maximum run out of the crankshaft journals.

The maximum difference in value between one crankshaft journal and the next crankshaft journal ... 0.10 mm (0.004 inch)

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Table 2
Journal	Excessive run out
(1)	Mounting Diameter
(2)	0.08 mm (0.003 inch)
(3)	0.08 mm (0.003 inch)
(4)	Mounting Diameter

Refer to Specifications, "Connecting Rod Bearing Journal" for more information on the connecting rod bearing journals and connecting rod bearings.

Refer to Specifications, "Main Bearing Journal" for information on the main bearing journals and for information on the main bearings.

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