Home » 2008 6.6L Duramax » 2008 6.6L Duramax – Crankshaft Bearing Selection Plastic Gage Method – Special Tools

2008 6.6L Duramax – Crankshaft Bearing Selection Plastic Gage Method – Special Tools

J 45059 Angle Meter

1. Clean the cylinder block bearing fitting surfaces.
2. Clean the crankshaft and upper bearings (1) and lower bearings (2).
3. Install the bearings into the cylinder block and the bearing caps.

4. Install the crankshaft into the cylinder block.
5. Rotate the crankshaft approximately 30 degrees to seat the bearings.

6. Place the plastic gage over the crankshaft journal across the foil width of the bearing.

7. Install the crankshaft bearing caps.

• 3rd step 30 degrees using J 45059 .

10. Install the crankshaft bearing cap side bolts.
Tighten: Tighten the crankshaft bearing cap side bolts in the proper sequence to 70 N.m (52 lb ft).
11. Remove the crankshaft bearing cap bolts.
12. Remove the crankshaft bearing caps.

13. Compare the width o f the plastic gauge with the scale printed on the plastic gauge container.
14. Select the crankshaft bearing grade that provides the proper oil clearances. The production specification for                  crankshaft bearing clearance is 0.039-0.070 mm (0 .0015-0.0028 in) and the service limit is 0.014 mm (0.0055          in).