Removal and Installation

NOTE: Bearing caps are not interchangeable and should be marked at removal to insure correct assembly. Upper and lower bearing halves are NOT interchangeable. Lower main bearing halves of 1, 2, 3 and 4 are interchangeable. Upper main bearing halves of 1, 3 and 4 are interchangeable.





REMOVAL
1. Remove oil pan and windage tray. Identify bearing caps before removal.
2. Remove bearing caps one at a time. Remove upper half of bearing by inserting Special Main Bearing Tool C-3059, or equivalent into the oil hole of crankshaft.
3. Slowly rotate crankshaft clockwise, forcing out upper half of bearing shell.

NOTES:
- Only one main bearing should be selectively fitted while all other main bearing caps are properly tightened.

- When installing a new upper bearing shell, slightly chamfer the sharp edges from the plain side.

INSTALLATION
1. Start bearing in place, and insert Main Bearing Tool C-3059, or equivalent into oil hole of crankshaft.
2. Slowly rotate crankshaft counter-clockwise sliding the bearing into position. Remove Special Main Bearing Tool C-3059, or equivalent.
3. Install each main cap and tighten bolts finger tight.





4. Tighten number 1, 3 and 4 main cap bolts to 41 Nm + 1/4 Turn (30 ft. lbs + 1/4 Turn). Then tighten the #3 tie bolts to 54 Nm (40 ft. lbs.).
5. Rotate the crankshaft until number 6 piston is at Top Dead Center (TDC).
6. To ensure correct thrust bearing alignment the following procedures must be done.
7. Move crankshaft all the way to the rear of its travel.
8. Then, move crankshaft all the way to the front of its travel.
9. Wedge a appropriate tool between the rear of the cylinder block and rear crankshaft counterweight. This will hold the crankshaft in it's most forward position.
10. Tighten the #2 Thrust Bearing cap bolts to 41 Nm + 1/4 Turn (30 ft. lbs. + 1/4 Turn). Then tighten the #2 tie bolts to 54 Nm (40 ft. lbs.). Remove the holding tool.