rear end shake - Ford Powerstroke Diesel Forum

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post #1 of 10 Old 07-07-2013, 11:16 AM Thread Starter
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rear end shake

so i noticed when i bought this truck at 70+ on the highway she had a shake. since the tires were wore out and dry i bought a new set of tires and it shakes worse. same speed. i pulled the rear diff open and didnt see any abnormal wear so i am assuming its most likely a bad u joint. my question is do i have to burn these out or can i press them out in the garage?
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post #2 of 10 Old 07-07-2013, 07:01 PM
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Is it listening to the Harlem shake? You should be able to get the U-joint out fairly easily. I have used various sockets with a C-clamp to get U-joints out in the past. If that doesn't take care of it I'd look at you hub bearings

2000 Ford Excursion Limited 4x4 Diesel
2007 Jeep Wrangler unlimited on 1 tons & with 41.5" Pitbull Rockers
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post #3 of 10 Old 07-07-2013, 08:00 PM Thread Starter
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i have one of the high class harbor freight u-joint press tools. i plan to pull the shaft out this weekend and change the u-joints just because i feel like after 200k and not knowing if they have ever been done i should change them just because. i know i found out the hard way with my silverado i had to burn them out.
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post #4 of 10 Old 07-07-2013, 08:17 PM
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High class HF press

2000 Ford Excursion Limited 4x4 Diesel
2007 Jeep Wrangler unlimited on 1 tons & with 41.5" Pitbull Rockers
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post #5 of 10 Old 07-07-2013, 08:23 PM Thread Starter
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on another note wouldnt i have oil leaking from the axle tubes if the hub bearing were bad?
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post #6 of 10 Old 07-08-2013, 07:09 AM
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Bearing could be on the way out but, not the seal.... yet?

I get a vibration when there is a change in the pavement/transition between roadway and bridge. Upon the next transition is goes away, then next return. This is off and on. It first occurred in the winter so I was thinking cold tires but continues to today. Next guess is shocks/stabilizer, just over 100,000 and they appear to be original.

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post #7 of 10 Old 07-08-2013, 07:18 AM
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This is on my 04 SD gasser but still pretty much same truck body wise... Starts to vibrate at 62mph. Really start to feel it at 65 mph. Front bearings and U joints all check out by two different shops, one was the stealership the other being an actual spring, coil, underbody shop. So now what? I have noticed that if I put some weight in the back of the bed, say a lawnmower or 4 wheeler the shake goes away. Could it be the driveshaft? Maybe a brake caliper hung up and warped one of the rear rotors? How could one check any of this?
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post #8 of 10 Old 07-08-2013, 07:34 AM
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Tire/s could be out of balance? With the weight stopping it could be shock/spring related?

Chris
1984 F-350 XLT 4x4 4spd. 6.9 (project)
1996 F-250 XLT 4x4 5spd. 7.3
2001 Excursion XLT 4x4 Auto 7.3
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post #9 of 10 Old 07-08-2013, 09:36 AM
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To the OP I would check the rear rotor first. Fords have a bad habit of caliber sticking... it has happened to me on two previous trucks. If it gets hot enough and warps the rotor you will have a shake.

As for me my tires were balanced since thats what the stealership thought the problem was. Then I bought two brand new rear tires and had them put on and balanced and it was still there. Rotated the tires to see if it switches to the front, it didn't. Now I am going to prop up the rear of the truck and dismount the rear tires and put it into drive and see if I can still feel a shake or not. If so hopefully I will be able to see where it is coming from.
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post #10 of 10 Old 07-08-2013, 08:17 PM Thread Starter
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i just replaced the right rear because the pistons there corroded and falling out about 2 weeks ago. the left rear looked new. when i put the horse trailer behind her the shake is still there. thats why i have been thinking u joints.
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