Crankshaft Main Bearing

Crankshaft Main Bearing Cap Bolts

Measure the minimum diameter of the elongated thread at the measuring point





Measuring point 47 mm (1.85 in.)

Standard diameter





Minimum diameter





If the diameter is less than the minimum, replace the crankshaft bearing cap set bolt

Tightening Sequence

The crankshaft bearing cap bolts are tightened in 2 progressive steps
Uniformly tighten the 20 crankshaft bearing cap bolts in the sequence shown in the illustration.





Step 1

Inside position 61 Nm (622 kgf-cm, 45 ft-lbf)
Outside position 27 Nm (275 kgf-cm, 20 ft-lbf)

If a crankshaft bearing cap bolt does not meet the specified torque, replace it

NOTICE
Do not turn the crankshaft

Step 2





Mark the front of the bearing cap bolts with paint.

Tighten the bearing cap bolts 90° in the order shown in step 1

Check that the painted marks are now at a 90° angle to the front

Install and uniformly tighten the 10 crankshaft bearing cap bolts and 10 seal washers in several steps, in the sequence shown in the illustration





Torque 45 Nm (459 kgf-cm, 33 ft-lbf)

Oil Clearances

Standard oil clearance





Maximum oil clearance





If the oil clearance is greater than the maximum, perform the next step. If necessary, replace the crankshaft

Replace the bearing with one having the same number





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 below 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")

A = Cylinder block number mark

B = Crankshaft number mark


Standard Crankshaft Main Journal Diameter





Standard Bearing Center Wall Thickness No. 1 and No. 5 Journal





Standard bearing center wall thickness other journal