The front wheel bearings are being replaced on a front-wheel-drive vehicle with the wheel bearings pressed into the steering knuckle. Technician A says the vehicle should be driven a short distance in the shop before the front hub nuts are torqued to specifications. Technician B says the hub nut torque supplies the correct wheel bearing adjustment. Who is correct?

Question

Quizplus · Accepted Answer

Technician B is correct. The torque applied to the hub nut is what sets the proper preload for the wheel bearings. Driving the vehicle before torquing the hub nut is unnecessary and can actually cause incorrect bearing preload.

The Front Wheel Bearings Are Being Replaced on a Front-Wheel-Drive