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Old 03-20-2014, 07:39 PM
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New lift - vibrations - drive shaft angle?

Recently I added a leveling kit in the front and blocks in the rear on my 09 f250. The truck already had an 8" suspension lift on it. I did replace my track arm and now I am noticing vibration during acceleration. It goes away at 20mph and gets loud at 60mph

Do I have an issue with my drive shaft angle? Is this an easy fix?

Thanks.
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Old 03-20-2014, 08:01 PM
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Your not going to want to hear this but lift it properly. Adding a leveling kit to a lift is almost always asking for issues
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Old 03-21-2014, 02:24 AM
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The truck is running great and rising fine other then the vibration. I spoke to a few companies who do lifts and said that it's not an issue to add the leveling kit as long as I adjusted the front end which had been done. I have read that adding the lift could cause the vibration and noise that I am hearing which I am wondering if that's the drive shaft angle that needs to be adjusted.
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Old 03-21-2014, 06:13 AM
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carrier bearing needs to be adjusted for the new drive angle. get some spacers and drop it down a bit. you might need to get longer bolts to do this. you'll just have to play with it a few times until the vibration goes away. I wouldn't drive it too much until you get it worked out.
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Old 03-21-2014, 06:16 AM
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Quote:
Originally Posted by p8ntballn2 View Post
carrier bearing needs to be adjusted for the new drive angle. get some spacers and drop it down a bit. you might need to get longer bolts to do this. you'll just have to play with it a few times until the vibration goes away. I wouldn't drive it too much until you get it worked out.
Thanks, Kris. I have only driven it less than 10 miles. I am going to run it by the mechanic this morning and let him know. Hopefully he has the materials at his shop to handle this for me.

I have read a bunch of stories when the lift goes above 4" it can begin causing this problem and it doesn't appear to be a major fix. I appreciate your feedback.
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Old 03-21-2014, 08:12 AM
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spacers only lower the carrier but don't angle it properly
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Old 03-21-2014, 08:15 AM
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you want something like this ideally otherwise the carrier bearing isolator takes a beating
and it easier to fine tune
One Up Offroad Drive Line Drop
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Old 03-21-2014, 08:16 AM
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Quote:
Originally Posted by ZMANN View Post
spacers only lower the carrier but don't angle it properly
The driveshaft that is currently on the truck is a two piece drive shaft . I dropped the truck off this morning and he is going to measure the angles and probably need to add some shims.

I crawled under the truck this morning and learned that it was a two piece drive shaft which looks like it was added when the lift was put on. Hopefully he can get the parts needed today and correct the issue.
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Old 03-21-2014, 08:19 AM
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Quote:
Originally Posted by ZMANN View Post
you want something like this ideally otherwise the carrier bearing isolator takes a beating
and it easier to fine tune
One Up Offroad Drive Line Drop
This is nice! He is going to give me a call this afternoon and let me know how much the angle is out. I'll be sure to mention this part.

Thank you for your help, ZMANN
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Old 05-19-2014, 09:32 AM
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Originally Posted by juicefree View Post
This is nice! He is going to give me a call this afternoon and let me know how much the angle is out. I'll be sure to mention this part.

Thank you for your help, ZMANN
Thats a nice part and a fair price too. Im going to look into my driveshaft angle. I have slight vibration above 60mph. I was just thinking its my tires. I do have a 6" lift.

Thanks for the link
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