2. Install the engine with the head facing up.
3. Remove the main bearing cap bolts and lift the caps. Place them in the correct order and check that they are installed correctly.
4. If they are installed in place, remove the old bearing shells from the block and main bearing cap. Wipe the main bearing surfaces of the block and caps with a clean cotton cloth. They must be kept spotlessly clean.
5. Clean the backs of the new main bearing shells and place the halves on the main bearing seats on the block. Make sure the key on the bearing shell fits into the recess in the block or cover. Also make sure that the oil holes in the block are aligned with the oil holes in the bearing shell. No lubricant is used during this time.
Install the gearbox input shaft bearing into the crankshaft (models with manual transmission)
6. The thrust bearing must be installed on seat No. 3.
7. Clean the bearing surfaces in the block and the crankshaft main bearing journals with a clean cotton cloth. Check and clean the oil holes in the crankshaft.
8. If you are sure that the crankshaft is clean, carefully place it in the main bearings.
9. Before the crankshaft is finally installed, check the main bearing clearance.
10. Install Plastigage (tool for measuring clearances in plain bearings) on each main journal, parallel to its axis.
11. Clean the bearing shell surfaces in the caps and install the caps on the corresponding connecting rods (don't confuse them), so that the arrows on them point towards the front of the engine. Do not move the Plastigage.
12. Starting at the center main bearing and working toward the ends of the crankshaft, tighten the main bearing cap bolts in three stages to the specified torque. Do not turn the crankshaft during this action.
13. Unscrew the bolts and carefully remove the main bearing caps. Do not mix Plastigage or rotate the crankshaft. If any of the caps are difficult to remove, gently tap them with a mallet.
14. Compare the width of the Plastigage with the scale shown on the tool packaging to calculate the main bearing running clearance. Compare the obtained value with the data given in Specifications.
15. If the clearance is not correct, double-check that the bearings are fitted with the correct size liners. Also make sure that no dirt or oil gets in when measuring the clearance between the bearing shells and the main bearing surface.
16. Carefully clean all traces of Plastigage from the journals and/or bearing shell surfaces. Do not damage the surfaces.
17. Carefully lift the crankshaft from the engine. Clean the bearing surfaces in the block, then apply a thin, uniform coat of clean, high-quality molybdenum grease or special engine assembly oil to each of the bearing running surfaces.
18. Make sure the crankshaft journals are clean, then install the crankshaft. Clean the bearing thrust surfaces in the caps, then apply a thin, uniform coat of clean molybdenum grease to them. Install the covers in the appropriate positions so that the arrows on them point towards the front of the engine. Install the bolts and tighten them to the specified tightening torque Specifications, starting from the central main bearing and moving towards the ends of the crankshaft.
19. On manual transmission models, install a new transmission input shaft bearing into the end of the crankshaft. Lubricate the crankshaft recess and the outer periphery of the bearing with clean engine oil and install the bearing. Gently tap it into place with a mallet using a piece of pipe of the appropriate size. Lubricate the inner surface of the bearing.
20. Turn the crankshaft by hand several times to make sure it rotates freely.
21. Finally, check the crankshaft axial clearance with a micrometer as described in Chapter 12.