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Old 10-18-2016, 11:02 AM   #1
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2001 Condor bounce in rear end

Recently bought a 2001 Condor model number 1330 that has a bounce in the rear end I replaced the tires and had them balanced and it remains to still have the bounce. I replaced the brakes and rotors, carrier bearings, u joints, had drive shaft re-balanced. However it still has the bounce in it. Would like any help with tying to solve this issue.
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Old 10-18-2016, 11:19 AM   #2
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Welcome to iRV2.

Could you add some info to your post .

Chassis manufacturer ? Size of tires ? Bounce ( vibration) apparent at all speeds and in every transmission gear? Same under power, cruising and coasting ?
Were the tires , spin balanced ? Rims checked for excessive run out before the new tires were installed ?

There is a distinct , difference in the speed of a drive shaft vibration , and that produced from tires and wheels ; drive shaft is turning over 4 times as fast.
Has a mechanic ridden with you to determine if , it's a slow or fast vibration ( bounce )?
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Old 10-18-2016, 01:53 PM   #3
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2001 Condor (bounce)

workhorse chassis, new tires spin balanced, 19.5 wheels they told me that if rims was bent or out of round they wouldn't balance the balancer would pick it up. At speed 50-70 gets really bad. It bounces pulling or coasting. Not a vibration a bounce sorry to say ys I am also a mechanic/tuckdriver and have never run into this problem.
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Old 10-18-2016, 02:05 PM   #4
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I have added some information to the post. Thanks
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Old 10-18-2016, 05:27 PM   #5
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Did you purchase direct from the Previous Owner, or from a dealer ?
Any chance you could talk to the PO and find out if he was having the same issue ?
Have you tried spinning the rear tires with the rear suspension up on jack stands to look for run out? ( e.g. rear hub machined off center ).
Tried re-indexing the rear dual wheels ? Leave inner where it is and rotate the outer 180.
You replaced carrier bearings ; was there any sign of wear , that could be attributed to the differential carrier being out of balance ( I know that's a long shot ; but from your description of the repairs so far , your problem is unusual.)
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Old 10-18-2016, 05:53 PM   #6
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Is the U joints in phase ?
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Old 10-18-2016, 07:10 PM   #7
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yes took all 3 to cincinnati driveline had checked and balanced
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Old 10-18-2016, 07:43 PM   #8
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previous owner deceased last owner inhederated it knew nothing about it have rotated tires 180* putting new shocks, loosen wheel bearings up i think when i put brakes and rotors i overtighten them being tight i dont know if that make it jump but rear wheels are hard to turn had mechanic pull cover off rear end he said everything fine in there after i do that i"m gonna put outside rear tires on and test drive
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Old 10-18-2016, 07:57 PM   #9
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yes took all 3 to cincinnati driveline had checked and balanced
Pretty sure you didn't install it in one piece.

Did they match mark the spline position and did you line it up.

Google U joint phasing for more info.
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Old 10-18-2016, 08:16 PM   #10
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yes I know what you are talking about they are all in line
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