Having problems with your 1999 Chevrolet Malibu ?

1999 chevy Malibu - v6. front wheel bearing drive nut

\015 1999 chevy Malibu - v6. front wheel bearing hub... the hub I bought says 'do not torque over 180 ft-lbs - however, I read the needed torque should be 192 ft-lbs. Which is correct. Also, the rep at the auto store said something about needing to preset the bearings at a higher torque level, and then back off - I've never heard of this. Thoughts?\015 Posted / edited by AnonymousUser on : 14-01-2019

Answers :

The over torque to set bearings is a valid technique. You can torque to 192 to set them and then back off and retorque to 180.
The technique of preloading the bearings to a higher torque and backing off is somnething from when you used conventional roller bearings - think rear wheel drive cars. They would use a castle nut that you would torque down to 10 to 15 lbs while rolling the wheel then back off to the first alignment of a castle slot with w hole in the spindle for a cotter pin. On modern (fwd) cars with sealed bearing units the difference between 180 lbs and 192 is not really significant. As far as preload goes, some modern axle nuts are prescribed to be only used a specific number of times (3 in some cases). the double direction change to load then back off then load again would not help the life of the nut.
Repair Help & Product Troubleshooting for 1999 Chevrolet Malibu

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