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Number7

What's wrong with this drive shaft?

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Theksmith gave me this front drive shaft a long time ago. It came off of his WJ when he upgraded to JK axles. I installed it on Clifford recently, and found out that, when in 4 wheel drive and the Jeep is under load (i.e.: going uphill or making a hard turn) there is a clunk sound for every revolution of the drive shaft from the CV joint.

 

I took it out and looked it over, and I think I know what the problem is. Besides the caps are missing, what do you think is the problem?

 

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If the ujoints are tight, the centering ball in the CV is most likely worn. Replaceable. Be sure to get one that can be greased.

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Ditto what Tim said. Also, be sure to look closely at both the driveshaft yokes, and the mating yokes at both the t-case & the axle, to make sure there are NO witness marks where the yokes may be interfering. ;)

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Looking again, the ends look out of phase.

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Looking again, the ends look out of phase.

Good catch Tim ! ! ! It does indeed appear as if the slip yoke is mis-positioned by approx one spline.

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Yes the u-joints are misaligned. The cv joint is tight and nothing hits or rubs. I pulled the yoke off and rotated it one spline and it misaligned the other direction. That slight misalignment must be causing my clunking.

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