Regal V6-3.8L VIN K (1997)
Crankshaft: Testing and Inspection
1. Clean the crankshaft of the following foreign material:
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Oil
^
Sludge
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Carbon
2. Clean the oil passages of any obstructions.
3. Inspect the keyway for damage.
4. Inspect the threads.
5. Inspect the bearing journals and thrust surfaces for the following conditions:
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Cracks
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Chips
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Gouges
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Roughness
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Grooves
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Overheating (discoloration)
6. Inspect the bearing inserts for embedded foreign material. Determine the source of the foreign material.
7. Replace the crankshaft if the crankshaft is damaged. Remove slight roughness with a fine polishing cloth. Remove burrs with a fine oil stone.
8. Use a micrometer in order to measure the crankshaft journal taper.
9. Use a micrometer in order to measure the crankshaft journal runout.
10. Note the results if the measurements are within specifications. Use the results later in order to select bearing inserts.
11. Replace the crankshaft if the measurements are not within specifications.
12. Use the following procedure in order to measure the crankshaft flange runout:
a. With the crankshaft installed, place the dial indicator stem outside of the flexplate mounting bolt holes.
b. Set the indicator to 0.
c. Rotate the crankshaft.
d. Record the readings.
e. Replace the crankshaft if the readings are not within limits.
13. If the main bearing high spots are not in line the crankshaft is bent. Replace the crankshaft if the crankshaft is bent.
CAUTION: Do not scrape, shim, or file bearing inserts. If the bearing surface of the insert is touched with bare fingers, the skin oil and acids will
etch the bearing surface.
NOTE: Engine bearings are of the precision insert type. They are available for service use in standard and 0.001 inch undersize.
14. Inspect the bearing surfaces for the following conditions:
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Wear.
