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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

Rear Axle Bearings Grease or No?

 
Old 01-29-2017, 12:12 PM
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What do you mean by a "jump" in the rear drivers side?
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Old 01-29-2017, 01:48 PM
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Hop, skip or what ever you want to call it. Above about 35-40mph the drivers side jumps up and down like its going over rumble strips. the passenger side does not and the truck didn't do it when I bought it so I'm thinking after the other stuff I did that its the bearing. The oil seal is leaking a little as I noticed when putting on rotors and brakes last week so I'm changing the bearing on that side.
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Old 01-29-2017, 04:17 PM
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Originally Posted by diver64 View Post
Hop, skip or what ever you want to call it. Above about 35-40mph the drivers side jumps up and down like its going over rumble strips. the passenger side does not and the truck didn't do it when I bought it so I'm thinking after the other stuff I did that its the bearing. The oil seal is leaking a little as I noticed when putting on rotors and brakes last week so I'm changing the bearing on that side.
Have you had your tire checked for a separation?
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Old 01-29-2017, 04:59 PM
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brand new tires. the first thing i did was rotate, rebalance and line the truck. Same hop. Next I put on new shocks then rotors and brakes. I thought Bearings next then I'm not sure.
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Old 01-29-2017, 09:13 PM
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Bent axle ?
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Old 01-29-2017, 09:15 PM
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Is there a significant amount of weight in any of the tires? Just cause they're new doesn't mean you didn't get one out of round.

I don't believe an axle bearing would cause that sort of issue. You'll know if the bearing is bad just by looking at the axle shaft when removing it. It'll take be really pitted or even scored. The only fix at that point would be to try an axle saver bearing or replacing the axle.
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Old 01-29-2017, 09:25 PM
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I'm discounting the bent axle scenario as it did not have the hop when i bought it and I have not done anything that might have caused it. I'll know if the bearing is bad when I pull the shaft. I am trying to run down the hop step by step and replacing the bearing is the next step.
Thanks for the posts on this
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