Crankshaft Main Bearing
DIMENSIONSCrankshaft Main Bearings Clearance to Crankshaft
Standard 0.037-0.057 mm (0.0015-0.0022 inch)
Maximum 0.064 mm (0.0025 inch)
Available Undersize 0.25 mm (0.010 inch)
TIGHTENING SPECIFICATIONS
1. Measure the length of each lower cylinder block bolt before reinstalling. If the bolt length is longer than the following specifications, then replace it:
- Cylinder block bolt A: 138.5 mm (5.452 in)
- Cylinder block bolt B: 138.5 mm (5.452 in)
- Cylinder block bolt C: 121.O mm (4.763 in)
Apply clean engine oil to the threads of the lower cylinder block bolts.
NOTE: The narrow part of the shank on lower cylinder block bolt B is smaller than lower cylinder block bolt A. Lower cylinder block bolts A are marked with a 4 on the head. Lower cylinder block bolts B are marked with a 1 on the head. Lower cylinder block bolts C are not marked.
1. Tighten lower cylinder block bolts A and B in two or three steps in the order shown to 23-25 Nm (17-19 ft. lbs.). Tighten lower cylinder block bolts C in two or three steps in the order shown to 18-21 Nm (13-15 ft. lbs.).
NOTE: Lower cylinder block bolts A are marked with a 4 on the head. Lower cylinder block bolts B are marked with a 1 on the head. Lower cylinder block bolts C are not marked.
2. Paint a mark on each crankshaft main bearing cap bolt head.
3. Using the marks as a reference, tighten lower cylinder block bolts A by turning them 80 ± 5 degrees.
4. Using the marks as a reference, tighten lower cylinder block bolts B by turning them 70 ± 5 degrees.
5. Using the marks as a reference, tighten lower cylinder block bolts C by turning them 60 ± 5 degrees.
6. Further tighten each lower cylinder block bolt, an additional time, by repeating steps 3-5.
7. Tighten the lower cylinder block bolts in the order shown to 19-21 Nm (14-15 ft. lbs.).