The wheel bearings are sealed and should last a long time. If you think they are bad you would have to replace the bearings they cannot be repacked.
You must go to the mechanic , as the vehicle must be on the lift. Otherwise, you can jack your vehicle up, dismantle each wheel , and grease and repack the bearings one at a time. That is not an option for most people, and done improperly may cause damage to the vehicle.
Signs that indicate it's time to replace the bicycle front wheel bearings include excessive noise or vibration coming from the wheel, difficulty in spinning the wheel smoothly, and visible wear or damage on the bearings themselves.
Always replace inner and outer wheel bearings on the same wheel at the same. You don't necessarily have to replace the bearings in both wheels at the same time, though it's not a bad idea, but always inner and outer on the same wheel at the same time.
WRONG......Front wheel bearing replacement or repack is a pain in the butt. Best left for a trained technician. The last time I took mine for a brake test, the mechanic told me Toyota does not make them with wheel bearings Of course the truck has wheel bearings. Pull off the brake calipers and rotors and the spindle nut and the hub should slide out of the backing plate the bearing should come out of the hub. Your bearings should come in a set with a race; the race will have to be pressed out of the hub and the new race pressed in. Put it all back how it came apart.
Wheel bearings that are failing will usually start warning you with grinding. By the time they have failed completely, your wheel will certainly begin shaking--right before your wheel falls off.
tighten the chasity and wheel bearings
It could seize up next time you drive it. Don't take chances, replace faulty wheel bearings immediately.
Need more info such as the year, the make, the model and front or rear wheel bearings.
In theory the front wheel bearings require 3 hours to replace, all going well this would be about right but I had serious trouble removing the one of the axel nuts- very tight. The job requires speical pullers to remove the bearings but with them and limited mechanical skill I was able to do it
Almost. I've seen a horribly cheap toy skateboard once that didn't have bearings, only a plastic center to the wheel. But apart from that, any time you buy a complete skateboard it'll come with bearings.
you would be better off to just get a new wheel because it would save you time and trouble.