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Driveshaft check/rebuild?


derekmac

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My Jeep has been vibrating when driving 80 and above, and I had thought it was the M/T's causing it.  I checked the front driveshaft, and the axle side u-joint had play.  I took the shaft off, and when I put it on the bench to check it all over, I noticed that the slip section has some rotational play in it also.  I took the shaft apart to check the splines, and they looked OK, maybe a tad worn.  I cleaned the splines, and with no grease, there's a bit of side to side movement as well.

 

So, should there be any movement in the slip section at all, or should it be tight?  The bad u-joint has less than 1mm of play, but the rearview mirror looks like I have a couple of subs pounding away in the back of the Jeep, lol.  I took it on the highway with the shaft out, and it's smooth as glass.

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