wheel bearing issue

[jdearden]

ok well i have finnaly identified the scraping noise i have had over last 3 days. my wheel bearing is shagged there is alot of movement in rear drivers side wheel. how hard is it to replace the wheel bearing and what do i need to do and where do i get one from.

[GC1]

should be fairly easy to do ,how many miles has it done..?

[wessexrfc]

James, don't know how your comment ended up on Urb's

jdearden said:

34k. Does the bearing need to be pressed or does it just slip in.

[Mike Tuckwood]

it's a press in item, you will need to check the caliper and hib mounting flange too as they could have suffered too?


Mike.

[jdearden]

Ok cool. What is the hub from. What am I looking for in the way of damage.

[jdearden]

Well problem sorted. It was not the wheel bearing. The hub nut had come loose. And before you say it. It is a boxster hub nut. Atleast it was a simple fix

[Jim O.]

For these axle nuts, even the Porsche axle nuts, red Loctite is your friend...

[jdearden]

Ok well tightened hub nut solved problem however it gas come loose again. Any1 know why this is. Is there another problem I am missin. I will tighten back up tonight with some locktite and see if that helps.

[Gadgeroonie]

i suspect it has been loose for a while and the hub/bearing face has worn and now the bearing is loose

does the brake pedal move down a bit further after you have turned a hard right bend ?

if the hub has worn you will need to get it machined to take a collar and press the bearing into the collar

(a new hub is silly money)

[Jim O.]

The wheel bearing has two races - an inner race, and an outer race. The axle nut holds the hub in place, and clamps these two races in place in the bearing. If the nut loosens up, and the car is driven a bit, it's possible to pop one of these races out of place, which ruins the bearing. Also, the portion of the hub that presses into the bearing tends to wear - what I've seen is that area on the hub where the outer race sits is OK, so the outer race presses onto the hub properly. But the area where the inner race sits is worn away, so the inner race doesn't turn with the hub, and the hub is loose in the inner race. The wobble in the wheel from either a worn hub or a ruined bearing may loosen the hub nut, even if you torque it to spec.

I'd suggest changing the wheel bearing. When you have the hub out, inspect it for wear. Also, there shouldn't be a step in the part that sticks into the bearing - if there is, change the hub. If you know a good machinist, you can probably have the hub built up by welding, then turned back down to the proper diameter. Otherwise, buy a new hub from Ford.

When you reassemble everything, use a wire brush to clean up all the threads, like on the end of the axle where the axle nut goes. Use Loctite where needed. Torque to spec using a decent torque wrench.