My dad is having problems with his Expedition. The original problem with the 4 wheel drive was that the wheel would wobble, causing noise. After he took the wheel off, the caliper was wobbling approx. 1/4 inch.
He wants to know what would cause this problem so he can fix it, and he also wants to know the torque of the nut in this diagram...
He labeled 'Bearing?' in his diagram, but Im not sure what he meant, I didnt get a chance to talk to him about he just left me a note when I got home.
The wheel wobble is more than likely from a bad wheel bearing (hub assembly), the location shown in the drawing.
The front axle shaft nut will torque will be 60 ft. lbs but has nothing to do with the tightening of the wheel bearing.
This is what the wheel bearing assembly will look like, they are expensive also, $150-200.
It's a pretty easy change. Remove the center nut, brake caliper, caliper bracket, rotor, unhook the ABS connector, and the 3 bolts holding the assembly. When installing, use blue thread locker on the assembly bolts and a new axle nut.
The wheel bearing (hub assembly) I've bought have all been 'factory sealed' meaning no grease joint. However, I've had good luck with mine. Most last 60K or more without issue. I abuse my Durango and the left front wore out 20K before the right front one did. It sees a lot of towing during the summer months and the rears are still good! When the fronts went, they didn't wobble much and barely made any noise except at low speeds and doing tight turns (at lock). I'd love to get 300K on a set. Perhaps my next vehicle will.
Thanks guys, the suggestion worked perfectly. He changed the assembly, no more wobble!
The only downside is the part was a little more then expected, almost $400 dollars including tax.
On a side note, how long do these repairs usually last? Like, how long until the problem comes back?
$400? Was that outright or did that include installation? RockAuto Auto Parts had them at the prices I mentioned above. Next time you are in need of auto parts, give them a look. In the supporting vendor section on this forum, they have a code good for 5% off. If I don't need a part right away, I always buy from them.
I don't know about 4WD, but on my truck I had a bearing go at around 140k and the other is original with 156k on the clock.
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