Crankshaft Main Bearing: Specifications

CRANKSHAFT

Install the crankshaft bearing cap bolts.






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

Step 1

Install and uniformly tighten the 16 crankshaft 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 torque specified, replace it.

Step 2






Mark the front of the bearing cap bolts with paint.
Retighten the bearing cap bolts 90° in the order above.
Check that the painted mark is now at a 90° angle to the front.

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






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

Bolt (A) length 45 mm (1.77 in.)
Except bolt (A) length 30 mm (1.18 in.)

MAIN BEARING CLEARANCE, STANDARD & LIMIT






MAIN BEARING SIZE CODES

There are 5 sizes of standard bearings, marked "1", "2", "3", "4" and "5" accordingly.





Journal bearings:






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 journals):






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






Standard upper bearing center thickness (No. 2 and No. 3 journals):






Standard lower bearing center thickness (No. 2 and No. 3 journals):