How to replace a wheel hub on a volvo - 2007 Volvo S40 2.4i Sedan

Usually a bad wheel speed sensor. See ABS notes on linked page.
Do It Yourself Diagnosis and Repair

A faulty wheel sensor starts around $200, could be higher. Some are in the hub, Replace the hub. Some are in the knuckle. Replace just the sensor. Some sensors are not cheap. I just did a Volvo, I broke the sensor. My cost just for the sensor was $120.

Most likely causes:
Front wheel hubs need replaced (do both at one time)
Front rotors warped or worn (change rotors and pads both wheels together)

The noise from the brakes dragging or the wheel bearings humming gets picked up by the abs sensors in the hubs before you can hear them. A few hundred miles later, the problem will get worse enough to hear while driving. Wheel hub replacement best done on a lift with an enormous impact wrench.

1. Remove the tire/wheel
2. Remove the top and bottom caliper
bolts/remove caliper.
3. Remove the four bearing housing bolts on
the inside of the housing
You will need a soft mallet to whack the housing until it comes out...don't worry you cannot hurt anything but you hands and your pride.

This is very common, the center hole of the rim is whats holding the wheels on due to corrsion, you will need to hit inside of tire with a good size hammer and spinning it so you hit diffrent spots of the tire. the tire will break free.
Note try not to hit the rim as it will dent, wont harm it but try to avoid it.

You will note the build up on the inside center hole of the rim and also on the center hub. use a steel brusk and some fine sand paper to clean.
After you clean apply some lube grease around hub, this will make the wheel go on and come off alot better. hope this helps.

that sounds like you are low on power steering fluid ... when the level gets low then the pump starts to ingest air and that produces a buzzing sound when you turn the wheel .....i would add or change the fluid and check for leaks and mechanical loosness in the under car linkages ...you can have that checked at your next oil change .

most front wheel bearings are pressed in you half to take the whole control arm off pull out the hub press out the bearing grease the new one and press it in its best to take it to a machine shop do not try pressing it in yourself

front wheel bearing comes as complete hub assembly remove brake calliper and brake disc remove drive shaft nut at the back of hub housing there are some bolts wire brush this area well use penetrating oil remove the bolts tap hub out of housing can be tight so take your time clean housing well then fit new hub secure bolts fit and tourqe up hub drive shaft nut fit disc and calliper

Have a look here - you should find what you need.

You Can Replace The Wheel Studs Call Napa And Find Out How Much They Are. Dont Go Dealer Cause They Are $20 A Piece And At Napa Like $4 Also You Can Try Autozone Or Kraigen But They Never Have The Ones I Need. Its Also Very Easy To Do Yourself If You Can Change The Brakes You Can Do This. You Can Have Them Pressed In At Any Tire Shop Usually $5.
Happy Fixing
Sincerely,
Michael Scott