Crankshaft and Bearing Installation: Notes

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Special Tools

For equivalent regional tools, refer to Special Tools (LDK, LHU) .

Fig 1: Measuring Bearing Bore

Courtesy of GENERAL MOTORS COMPANY

NOTE:

If crankshaft bearing failure is due to other than normal wear, investigate the cause. Inspect the crankshaft or connecting rod bearing bores.

Inspect the connecting rod bearing bores or crankshaft main bearing bores using the following procedure:

Tighten the bedplate to specification using the EN-45059 angle meter.
Measure the bearing bore for taper and out-of-round using the EN-8087 gauge (1).
No taper or out-of-round should exist.