Measure crankpin with an external micrometer in the thrust direction and at right angles to the thrust direction.
Install bearing shells and assemble conrods.
Using tightening angle indicator, BMW # 11 2 500, tighten the big end bolts.
Tightening torque: Big end bolts oiled:
- Closing torque — 20 Nm
- Tightening angle — 80°
Measure big end bearing with internal gauge in thrust direction.
Enter measured values on record sheet and calculate big end bearing play. See Technical Data.