Crankshaft Main Bearing

MAIN BEARING CAP BOLTS
- Apply engine oil to the upper bearing and install the crankshaft on the cylinder block.





- Examine the front marks and numbers and install the bearing caps on the cylinder block.
- Apply a light coat of engine oil on the threads of the bearing cap bolts.
- Temporarily install the 8 main bearing cap bolts to the inside positions.





- Install the main bearing cap by hand using the inner bolt as a guide. Stop the main bearing cap is about 6 mm (0.23 in.) away from contacting with the block.





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





- Uniformly install and tighten the 16 main bearing cap bolts 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 a 90°angle to the front.
- Check that the crankshaft turns smoothly.
- Install a new seal washer to the main bearing cap bolt.





- Uniformly install and tighten the 8 main bearing cap bolts in the sequence shown in the illustration.
Torque: 27 Nm (275 kgf-cm, 20 ft-lbf)

HINT: Use the short bolt for the marked position (arrow).


CRANKSHAFT
Crankshaft thrust clearance 0.04 to 0.30 mm (0.0016 to 0.0118 in.)
Thrust washer thickness 1.93 to 1.98 mm (0.0760 to 0.0780 in.)

Specified main journal oil clearance
No. 1 and No. 4 journals 0.014 to 0.050 mm (0.0006 to 0.0020 in.)
No. 2 and No. 3 journals 0.026 to 0.060 mm (0.0010 to 0.0024 in.)

Cylinder block main journal bore diameter (Reference)
Mark 00 66.000 mm (2.5984 in.)
Mark 01 66.001 mm (2.5985 in.)
Mark 02 66.002 mm (2.5985 in.)
Mark 03 66.003 mm (2.5985 in.)
Mark 04 66.004 mm (2.5986 in.)
Mark 05 66.005 mm (2.5986 in.)
Mark 06 66.006 mm (2.5987 in.)
Mark 07 66.007 mm (2.5987 in.)
Mark 08 66.008 mm (2.5987 in.)
Mark 09 66.009 mm (2.5988 in.)
Mark 10 66.010 mm (2.5988 in.)
Mark 11 66.011 mm (2.5989 in.)
Mark 12 66.012 mm (2.5989 in.)
Mark 13 66.013 mm (2.5989 in.)
Mark 14 66.014 mm (2.5990 in.)
Mark 15 66.015 mm (2.5990 in.)
Mark 16 66.016 mm (2.5990 in.)

Main journal diameter 61.000 mm (4.1016 in.)

Main journal diameter (Reference)
Mark 00 60.999 mm (4.4015 in.)
Mark 01 60.999 mm (4.4015 in.)
Mark 02 60.998 mm (4.4015 in.)
Mark 03 60.997 mm (4.4015 in.)
Mark 04 60.996 mm (4.4014 in.)
Mark 05 60.995 mm (4.4014 in.)
Mark 06 60.994 mm (4.4013 in.)
Mark 07 60.993 mm (4.4012 in.)
Mark 08 60.992 mm (4.4012 in.)
Mark 09 60.991 mm (4.4012 in.)
Mark 10 60.990 mm (4.4012 in.)
Mark 11 60.989 mm (4.4011 in.)
Mark 12 60.988 mm (4.4011 in.)

Standard main bearing center wall thickness (Reference)
Mark 1 2.486 to 2.489 mm (0.0979 to 0.0980 in.)
Mark 2 2.489 to 2.492 mm (0.0980 to 0.0981 in.)
Mark 3 2.492 to 2.495 mm (0.0981 to 0.0982 in.)
Mark 4 2.495 to 2.498 mm (0.0982 to 0.0983 in.)
Mark 5 2.498 to 2.501 mm (0.0983 to 0.0985 in.)
Mark 6 2.501 to 2.504 mm (0.0985 to 0.0986 in.)
Mark 7 2.504 to 2.507 mm (0.0986 to 0.0987 in.)

Maximum circle runout 0.06 mm (0.0024 in.)
Main journal diameter 60.988 to 61.000 mm (2.4011 to 2.4016 in.)
Main journal taper and out-of-round 0.02 mm (0.0008 in.)
Crank pin diameter 52.992 to 53.000 mm (2.0863 to 2.0866 in.)
Maximum crank pin taper and out-of-round 0.02 mm (0.0008 in.)

Crankshaft bearing cap set bolt
Specified diameter 7.2 to 7.6 mm (0.283 to 0.299 in.)