Crankshaft Main Bearing

Crank case bolt No.1


a) Apply engine oil to bolt threads and seats of crank case bolt No.1 and tighten bolt to 50 Nm (5.1 kgf-m, 37.0 lbf-ft) in numerical order ("1" - "10") evenly and gradually.
b) Loosen all bolts in reverse numerical order until loosening torque becomes 0.
c) In the same manner as Step a), retighten them to 20 Nm (2.0 kgf-m, 15.0 lbf-ft).
d) In the same manner as Step a), retighten them to 35 Nm (3.6 kgf-m, 26.0 lbf-ft).
e) In the same manner as Step a), retighten them to 40°.
f) In the same manner as Step a), retighten them to 40°.

Tightening torque
Crank case bolt No.1* (a) (50 Nm -> 0 Nm -> 20 Nm -> 35 Nm -> 40� -> 40� (5.1 kgf-m -> 0 kgf-m -> 2.0 kgf-m -> 3.6 kgf-m -> 40� -> 40�, 37.0 lbf-ft -> 0 lbf-ft -> 15.0 lbf-ft -> 26.0 lbf-ft -> 40� -> 40�))





Crank case bolt No.2

Tighten crank case bolt No.2s in numerical order ("1" - "12") evenly and gradually.

Tightening torque
Crank case bolt No.2* (a) 25 Nm (2.5 kgf-m, 18.5 lbf-ft)








Main bearing clearance
Standard 0.022 - 0.034 mm (0.00087 - 0.00133 in.)
Limit 0.050 mm (0.00196 in.)





Crankshaft journal diameter





- Determine cylinder block journal inside diameter for journals No.1 through No.5 using stamped alphabets and following table.





Standard size crankshaft main bearing thickness














Main bearing cross - reference selection table (standard size)





Undersize of crankshaft main bearing thickness














Finished crankshaft journal diameter 51.732 - 51.750 mm (2.03670 - 2.03740 in.)

Main bearing cross - reference table (under size)