Crankshaft Main Bearing

Crankshaft main bearing
Standard oil clearance 0.026 to 0.047 mm (0.0010 to 0.0019 in.)
Maximum oil clearance 0.050 mm (0.0020 in.)

Journal bearings
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 the numbers imprinted on the cylinder block and crankshaft, then refer to the table below for the appropriate bearing number. There are 5 sizes of standard bearings, marked "1", "2", "3", "4" and "5" accordingly.








HINT
EXAMPLE: Cylinder block "11" + Crankshaft "06" = Total number 17 (Use bearing "3")

Crankshaft main journal diameter





Standard upper bearing center wall thickness (No. 1 and No. 4 journal)





Standard lower bearing center wall thickness (No. 1 and No. 4 journal)





Standard upper bearing center wall thickness (No. 2 and No. 3 journal)





Standard lower bearing center wall thickness (No. 2 and No. 3 journal





Main Bearing Cap Bolts (16 point head)

HINT
The main bearing cap bolts are tightened in 2 progressive steps.

Step 1

(1) Install and uniformly tighten the 16 main bearing cap bolts in the sequence shown in the illustration.





Torque : 61 Nm (622 kgf-cm, 45 ft-lbf)

If any of the main bearing cap bolts does not meet the specified torque, replace it.

Step 2

(1) Mark the front of the bearing cap bolts with paint.





(2) Retighten the bearing cap bolts 90° in the order above.

(3) Check that the painted mark is now at a 90° angle to the front.

Cross Bolts (14 mm head)

Install 8 new seal washers and uniformly tighten the 8 main bearing cap bolts in several steps and in the sequence shown in the illustration.





Torque : 52 Nm (525 kgf-cm, 38 ft-lbf)

Bolt length: