Crankshaft Main Bearing: Specifications

Crankshaft





Maximum circle runout 0.06 mm (0.0024 in.)





Maximum taper and out-of-round 0.02 mm (0.0008 in.)





Standard crank pin diameter 52.982 to 53.000 mm (2.0859 to 2.0866 in.)

Maximum taper and out-of-round 0.02 mm (0.0008 in.)





Standard oil clearance

Standard oil clearance:

Maximum oil clearance

Maximum oil clearance:

Crankshaft Main Bearings

HINT: If replacing a bearing, replace it with one having the same number. If the number of the bearing cannot be determined, select the correct bearing by adding together the numbers imprinted on the cylinder block and crankshaft. Refer to the table for the appropriate bearing number. There are 6 sizes of standard bearings. For No. 1 and No. 5 position bearings, use bearings marked 4, 5, 6, 7, 8 and 9. For other position bearings, use bearing marked 3, 4, 5, 6, 7 and 8.





- Example:
Cylinder block "07" + Crankshaft "06" = Total number 13 (Use upper bearing "6" and lower bearing "7")

Standard crankshaft main journal diameter

Standard crankshaft main journal diameter:

Standard bearing center wall thickness No. 1 and No. 5 journal

Standard bearing center wall thickness No. 1 and No. 5 journal:

Standard bearing center wall thickness other journal

Standard bearing center wall thickness other journal:

Main Bearing Cap Bolt Inspection





Standard diameter
10.8 to 11.0 mm (0.425 to 0.433 in.) for bolt A
9.8 to 10.0 mm (0.386 to 0.394 in.) for bolt B
Minimum diameter
10.7 mm (0.421 in.) for bolt A
9.7 mm (0.382 in.) for bolt B
Measuring point 47 mm (1.850 in.)

Main Bearing Cap Bolt Tightening





First pass: Install and uniformly tighten 20 bolts in sequence
Inside positions 61 Nm (622 kgf-cm, 45 ft-lbf)
Outside positions 27 Nm (275 kgf-cm, 20 ft-lbf)
Second pass Tighten another 90° in sequence





Final pass: Install and uniformly tighten 10 bolts and 10 seal washers in several steps in sequence 45 Nm (459 kgf-cm, 33 ft-lbf)