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They've been known to fail. Both of my front hub/brg (and additional parts) needed to be replaced on my 2002 between 50k and 60k. This was some time after we had some minor flooding in my area. But it was not like I was driving through rivers or anything. The dealership said the bearings were full of water and debris.
Luckily the truck was still under an extended warranty. I would rather a regular bearing and race that you can repack yourself when you want to.
My 1999 F350 CC 2WD does not have sealed front wheel bearings. They are the conventional bearing/race. Maybe the 4WD models do? Mine were repacked at 75,000 and I wish we had checked sooner -- one of the nuts was not properly tightened the day it was built. But we're OK.
If you were to go thru the front end it couldnt hurt to grease the needle bearings.And grease the slide pins.I myself would not go into the sealed unit if all is ok.As far as the slide pins.I have done them every 10k miles.
needle bearings and slide pins is about all you can do then its wait and see if the maintanence free stuff really is or not
I don't have much faith in a lot of this stuff.
In addition to both of my hubs failing because of crap getting into the bearing, one of my non-greasable ball joints failed fairly early. I'm gonna be changing the ball joints on the other side one Saturday soon just to get those out of the way. Using greasable ball joints, of course.
You can pull your hubs out and change the o-rings on them to help keep some of the crap out of them. I think the hub and auto lok rings for both sides is about 22 bucks. You can grease that small bearing on the inside of the hub that rides on the axle shaft with the old put grease on finger and smash it in there. That should prolong the hub life some.
My 1999 F350 CC 2WD does not have sealed front wheel bearings. They are the conventional bearing/race. Maybe the 4WD models do? Mine were repacked at 75,000 and I wish we had checked sooner -- one of the nuts was not properly tightened the day it was built. But we're OK.
I did my 99 F250 4x2 at 99,000 when I did the first brake job. It was listed in the manual to check the spindle nut tq every 30,000 which I did. First time it took like a 1/2 turn to tighten.
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