Technical data

4. Crankshaft
Measure crankshaft bend. If excessive, replace
the crankshaft.
Check the journals and pins for damage, seizure
and other faults. If the journals and pins are
seriously worn, or damaged, correct them to
undersize. In this case, it is necessary to replace
the main bearings and connecting rod bearings to
the same undersize parts. When correcting the
crankshaft journals and pins undersize, finish
each end to R2.5 mm.
Check the crankshaft end play. If the end play
exceeds the specified value, replace the thrust
bearing. To check the end play, first install the
main bearings, crankshaft and main bearing caps
then tighten the cap bolts to the specified torque.
Using a dial indicator on the forward end of the
crankshaft, measure the end play.
5. Main Bearings and Connecting Rod Bearings
Check the bearing surface for spalling, melt,
seizure and incorrect contact. If defective, replace.