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Old 02-16-2013, 04:15 PM   #1
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Slip yoke play in driveshaft.

99 TJ, 50k miles, still has stock driveshaft and no lift. On the rear slip yoke it has a little bit of rotational play and I can push side to side on it and feel a little play. Is this normal? I've felt the slip yoke in the front drive shaft and it doesn't have play in it, but it's a different kind of setup than the rear. Just wondering if the rear was suppose to feel like this?

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Old 02-16-2013, 10:40 PM   #2
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Old 02-17-2013, 06:28 AM   #3
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Well depending on how much play and movement you have no this is not normal. If its only about a 1/16th or 1/8th of an inch movement then its not anything to major. If its anything more than that I would suggest pulling your driveshaft and inspecting the teeth in the shaft and the grooves inside the yoke. Most slip drivelines had a coating sort of like teflon or a very hard plastic on them to help with wear and movement, and your coating could be wore off. I wouldnt reccomend driving it much more until you have inspected it. If you have any sort of rotaional movement I would be getting it replaced as it means it isnt contacting as much surface area inside the yoke anymore. Working in a highway truck shop Ive seen guys who dont grease them and they have wore so much that the grooves have sheared off and the driveshat just spins around. Hope any of this helped. Good luck!
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Old 02-17-2013, 09:50 AM   #4
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Rotational play isn't a problem if it's the gears meshing or a bit of slack in the T-case chain. If it's the splines not engaging right away, big problem. Same with side to side play. There should be zero of that. Do you get seat vibrations when accelerating above 3k rpm or so?
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Old 02-17-2013, 02:10 PM   #5
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I have no vibrations above 3k rpm. The only vibration I get are when rpm's get low in a gear. like 1-1.5k rpm. (5 speed manual) All the play I'm talking about is in the splines. I just don't see how this could be worn after only 50k miles, with no lift and very mild offroad?
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Old 02-17-2013, 08:40 PM   #6
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Old 02-18-2013, 08:01 PM   #7
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Old 02-21-2013, 09:26 PM   #8
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Old 02-21-2013, 10:55 PM   #9
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Didn't read all replies but sounds to me like ujoint issue.
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Old 02-22-2013, 07:16 AM   #10
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U joints are fine. All play is on the output shaft of the TC on the splines.

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