Crankshaft Main Bearing: Specifications

Crankcase Bolt No.1s

Tightening torque
Crankcase 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�))

Tightening Sequence
a) Apply engine oil to bolt threads and seats of crankcase 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) Retighten them to 20 Nm (2.0 kgf-m, 15.0 lbf-ft) in the same manner as in Step a).
d) Retighten them to 35 Nm (3.6 kgf-m, 26.0 lbf-ft) in the same manner as in Step a).
e) Retighten them to 40° in the same manner as in Step a).
f) Retighten them to 40° in the same manner as in Step a).





Crankcase bolt No.2s

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

Tightening Sequence
Tighten crankcase bolt No.2s in numerical order ("1" - "12") evenly and gradually.








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





Crankshaft journal diameter





Main bearing cross - reference selection table (standard size)






Undersize bearing (0.25 mm (0.0098 in.))


Undersize of crankshaft main bearing thickness














Standard size crankshaft main bearing thickness














Finished crankshaft journal diameter 51.732 - 51.750 mm (2.0367 - 2.0374 in.)