Visual Inspection

WARNING: This page is about a different variant/trim than selected.

Fig 1: Inspecting Crankshaft Bearing Journals And Connecting Rod Bearing Journals

Courtesy of GENERAL MOTORS COMPANY

Inspect the 5 crankshaft bearing journals (1) and 4 connecting rod bearing journals (2) for wear:
- grooves or scoring
- scratches
- pitting or imbedded bearing material

Fig 2: Identifying Crankshaft Bearing Craters Or Pockets

Courtesy of GENERAL MOTORS COMPANY

Inspect crankshaft bearings for craters or pockets. Flattened sections on the bearing halves also indicate fatigue.

Fig 3: Identifying Connecting Rod Bearing Scoring Or Discoloration

Courtesy of GENERAL MOTORS COMPANY

Inspect the crankshaft bearings for excessive scoring or discoloration.
Inspect the crankshaft bearings for dirt or debris imbedded into the bearing material.

Fig 4: View Of Crankshaft Bearing Improper Seating

Courtesy of GENERAL MOTORS COMPANY

NOTE:

If the lower half of the bearing is worn or damaged, both upper and lower halves should be replaced.

Generally, if the lower half is suitable for use, the upper half should also be suitable for use.

Inspect the crankshaft bearings for improper seating indicated by bright, polished sections of the bearing.