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Old 07-24-2013, 07:47 PM
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Shaking

I get a lot of shaking in my truck when I get to 75-80mph. Is it possible my driveshaft carrier bearing needs to be lowered some?
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Old 07-24-2013, 08:04 PM
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what do you mean by shaking??

front tires shaking? lots of vibration?
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Old 07-24-2013, 09:45 PM
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More vibration and not from front end. When I say shake I mean my center console shakes.
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Old 07-26-2013, 06:57 PM
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Interested in the answer here. I have the same vibration at 75. Can watch the passenger seat shake.
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Old 07-26-2013, 08:45 PM
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I've been too lazy but I need to lower my carrier bearing a little more and see what happens. Or might need some degree shims.
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Old 07-27-2013, 09:26 AM
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I get a shimmy too ever since I lifted my truck and put the big meats on.
I have it shimmed, balancing beads, and centramatic balancers.
Still have the shimmy but not as bad. My shimmy starts around 45 and continues. 70 is more noticeable than 45-50. I do not know whats going on but drives me nuts. Sometimes I feel like a dog wagging its butt.

I might try rotating my tires 180deg. I have no play in the front, not weird tire wear or anything. The whole truck seems to do it like the op and get a very slight shimmy in the steering wheel cause of it. Tires appear to roll smooth and straight, nothing obvious. Might need dual stabalizers, idk.

Curious what you guys find on yours. Maybe angled blocks or shims. I only have 3in over stock in the rear and 5 in the front. I might try 2rear and 4 front to see if anything changes. Or even go back to stock in the rear to eliminate carrier shims to troubleshoot the issue.

Will keep an eye on this thread to see what you guys find
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Old 07-27-2013, 09:40 AM
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Looked at it more closely this morning cause I was planning on shimming the bearings some and it turns out the rubber around the bearing is shot so I will start by replacing the bearing. Have to do front brakes on my wife's car first so not sure if I'll be able to locate a bearing and do it today.
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Old 07-27-2013, 05:30 PM
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I was able to replace carrier bearing and lowered it 1/4", took it for a drive and it is much better. I may try lowering it a little more and see what happens. Only slight vibration past 80mph.
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Old 07-27-2013, 05:33 PM
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If anybody is interested I googled what it would take to replace carrier bearing and found this thread, piece of cake.
Carrier Bearing Replacement - PowerStrokeNation : Ford Powerstroke Diesel Forum
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Old 07-28-2013, 07:31 AM
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The best thing to do when lowering a carrier better bearing is to degree or clock it. Pushing it straight down will bind it. Look at the carrier bearings on a 550 or 650.

Karl
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