(2) Tighten the lock nut with the required torque of 200N.m;(3) Rotate the hub by 2-3 circles to correctly position the bearing;(4) Tighten the lock nut with the required torque of 200N.m again;(5) Rotate the hub by another 2-3 circles to check whether the hub bearing pre-tightening torque is correct, which shall be 20-55N.
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