Crankshaft Main Bearing

MAIN BEARING

HINT: Main bearings come in widths of 22.4 mm (0.882 in.) and 19.0 mm (0.748 in.). Install the 22.4 mm (0.882 in.) bearings in the No.1 and No.2 cylinder block journal positions with the main bearing cap. Install the 19.0 mm (0.748 in.) bearings in the No.3 and No.4 positions.

Temporarily install the 8 main bearing cap bolts to the inside positions.





Install the main bearing cap by hand until clearance between the cylinder block and the bearing cap becomes 6 mm (0.23 in.) or less.





Using a plastic-faced hammer, lightly tap the bearing cap to ensure a proper fit.
Apply a light coat of engine oil to the threads of the main bearing cap bolts.





Using several steps, install and tighten the 16 main bearing cap bolts uniformly in the sequence shown in the illustration.
Torque 22 Nm (224 kgf-cm, 16 ft-lbf)





Mark the front side of the bearing cap bolts with paint.
Retighten the bearing cap bolts by 90° in the same sequence as step (h).





Check that each painted mark is now at 90° angle to the front.





Using several steps, install and tighten the 8 main bearing cap bolts and 8 new seal washers uniformly in the sequence shown in the illustration.
Torque 27 Nm (275 kgf-cm, 20 ft-lbf)