Crankshaft Main Bearing

GENERAL SPECIFICATIONS
Main Bearings
Clearance to Crankshaft-Desired: 0.025-0.045 mm (0.0009-0.0001 in)
Clearance to Crankshaft-Allowable: 0.025-0.050 mm (0.0009-0.0019 in)
Bearing Wall Thickness-Grade 1: 2.497 mm (0.0983 in)
Bearing Wall Thickness-Grade 2 (a): 2.501 mm (0.0985 in)
Bearing Wall Thickness-Grade 3: 2.505 mm (0.0986 in)


(a) 0.250 mm Undersize-Add 0.125 mm (to standard or grade 2 thickness)

TIGHTENING SPECIFICATIONS








- Install lower cylinder block over eight cylinder block alignment dowels and onto upper cylinder block.
- Install new torque-to-yield lower cylinder block to upper cylinder block retaining bolts number 1 through 16. Install removed non-yield lower cylinder block to upper cylinder block retaining bolts.

CAUTION: Lower cylinder block retaining bolt numbers 1 through 16 must be replaced with new bolts. They are torque-to-yield designed and cannot be reused.

NOTE:
- Do not rotate crankshaft until all lower cylinder block retaining bolts are tightened to specification.
- Tighten all lower cylinder block to upper cylinder block retaining bolts within four minutes of installing lower cylinder block to upper cylinder block.
- Do not lubricate lower cylinder block to upper cylinder block retaining bolts.











- Tighten lower cylinder block to upper cylinder block bolts in sequence shown at this time to 3-5 Nm (27-44 inch. lbs.).
- Push crankshaft rearward and then lightly, using a prybar or a similar tool, seat crankshaft thrust washer forward.





- Tighten lower cylinder block to upper cylinder block retaining bolts in sequence, as follows:
- Tighten fasteners 1 through 8 to 22-28 Nm (17-20 ft. lbs.).
- Tighten fasteners 9 through 16 to 37-43 Nm (28-31 ft. lbs.).
- Rotate fasteners 1 through 16 an additional 85-95 degrees.
- Tighten fasteners 17 through 22 to 20-30 Nm (15-22 ft. lbs.).

- Verify crankshaft rotates freely and does not bind. Clean any residual sealer from inside the cylinder block with a clean shop towel.