BMW 11211252127 Crankshaft

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With the crankcase inverted, insert the bearing shells into their recesses, ensuring both sides of each shell are absolutely clean before installation, noting that No. 3 shells incorporate the thrust flanges. Liberally oil the bearings and carefully lower the crankshaft into position. Fit the bearing shells to the main bearing caps and install them in the correct sequence, ensuring they are numbered and legible from the front of the engine. Screw in and tighten the main bearing cap bolts to the specified torque. Finally, check that the crankshaft turns smoothly with hand pressure and install the rear oil seal retainer complete with a new oil seal and gasket.

The main bearing caps are numbered from 1 to 5, starting at the front of the engine, with the numerals visible from the same direction.

Check the end float with a feeler gauge, and if it is outside the specified tolerance, renew the no. 3 bearing shells.