Crankshaft Main Bearing: Specifications

Crankshaft Main Bearing Cap Bolts:

Step 1
Install and uniformly tighten the 10 main bearing cap bolts in the sequence shown in the illustration.





Torque 30 Nm (306 kgf-cm, 22 ft-lbf)

Step 2
Further tighten the bearing cap bolts 90°

Maximum circle runout 0.02 mm (0.000787 in.)

Main journal diameter
Standard diameter 47.988 to 48.000 mm (1.88929 to 1.88976 in.)

Maximum taper and distortion 0.003 mm (0.000118 in.)

Standard Diameter (Reference):





Crankshaft Thrust Clearance
Standard thrust clearance 0.04 to 0.24 mm (0.00157 to 0.00945 in.)
Maximum thrust clearance 0.28 mm (0.0110 in.)

Crankshaft Oil Clearance
Standard oil clearance 0.019 to 0.043 mm (0.000748 to 0.00169 in.)
Maximum oil clearance 0.049 mm (0.00192 in.)

HINT
If replacing a bearing, select a new one with the same number. If the number of the bearing cannot be determined, calculate the correct bearing number by adding together the numbers imprinted on the cylinder block and crankshaft. Then select a new bearing with the calculated number according to the chart below. There are 4 sizes of standard bearings, marked "2", "3", "4" and "5" accordingly.
EXAMPLE: Cylinder block "3" + Crankshaft "5" = Total number 8 (Use bearing "4")





Standard Cylinder Block Journal Bore Diameter:





Standard Crankshaft Journal Diameter:





Standard Bearing Center Wall Thickness: