I agree with the last two posters, but aggressive preload is needed mostly if the bearings are replaced - to seat the races completely. Also, races often still do not seat completely on the first try, so recheck the clearance after 100 mi or less of driving, and avoid sustained high speed until this is done.

Steve

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'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7