Figure 2.62. Measuring the width of the main bearing journal.
2. Lubricate the upper clearance adjusters with oil and install them into the cylinder block. The two lubrication channels (arrows) on the regulators must be directed towards the crankshaft cheek (see figure 2.63).
Figure 2.63. Location of the upper axial clearance adjusters in the cylinder block.
3. Lubricate the lower clearance adjusters with oil and install them into the grooves in the main bearing caps. Both oil passages (arrows) must be directed towards the crankshaft cheek (see figure 2.64).
Figure 2.64. Location of lower axial clearance adjusters in the cylinder block.
4. Lubricate the crankshaft and install it. Install the main bearing shells in accordance with the marks applied to them. Lubricate the main bearing cap mounting bolts with oil and tighten them to a torque of 55 Nm + 90° (see figure 2.65).
Figure 2.65. Installing the crankshaft.
5. Measure the axial clearance in the crankshaft bearings (see figure 2.66). If the obtained value is determined with an acceptable deviation, correct the axial clearance by installing axial clearance adjusters of the required thickness.
Figure 2.66. Checking the axial clearance in the crankshaft bearings. (p. 107)
6. Turn the crankshaft by hand and check that it rotates easily. Also check that the liners are installed correctly (oil channel alignment).
Original article is on the portal MercedesMan