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| Tweet Topic Started: May 11 2014, 12:41 PM (720 Views) | |
| fern30 | May 11 2014, 12:41 PM Post #1 |
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  ![]](http://z6.ifrm.com/static/1/pip_r.png)
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Ok have a loose uv joint right here on the prop shaft. About halfway along. At least I think its a loose uv joint? Question is what's behind the gaiter? Lying underneath there is movement and a clunk/metal to metal, is there another joint behind here? The rubber on the prop shaft support bearing just in front is fine. Cheers. 
Edited by fern30, May 11 2014, 12:42 PM.
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| Vector | May 11 2014, 03:46 PM Post #2 |
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Hi The drive shaft splits into two halves behind that gaiter. When separating the shaft Notice that there is a master spline so when you have replaced the universal joint, Joining the shafts together the master spline have to line up. All universal joints Should line up when the job is done if not there will be vibrations when diving the vehicle. Check it out and let me know how you get on. |
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| fern30 | May 11 2014, 05:14 PM Post #3 |
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Will there or should there be any play here where the splines go together? if I push up/pull side to side on the right hand side of the UV joint in the picture there is definitely a metal to metal clunk/knock. But its difficult to tell if its the UV joint or the "prop shaft from the spline to the Uv joint" moving up/down? I imagine there shouldn't be play anywhere but don't want to change the Uv joint and find its not that. If that makes sense  !?
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| Vector | May 11 2014, 08:03 PM Post #4 |
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Hi Remove the section of the drive shaft with the universal joint that you suspect is worn. Check the UJ on the bench, there shouldn't be any play. Check the splines when you have the drive shaft off. There should a blue coating on the splines. Also check the pinion bearings on the diff for play and back lash. Keep us updated. |
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| cieranc | May 12 2014, 12:12 PM Post #5 |
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OK, so the bit behind the rubber gaiter is the splined joint. The bit to the rear of the gaiter is the CV joint (constant velocity), more commonly known as a UJ (universal joint). To test the UJ, grab both halves of it (don't touch the gaiter or anything forward of the gaiter) and twist in opposite directions. You shouldn't be able to twist the UJ forwards or back. Next, the sliding joint. Do the same test, grab each side of the sliding joint and twist it back and forth. You should expect some movement, but not much. The most likely cause of play here is the blue Rislan coating wearing away. We've got a 65c15 with next to no Rislan coating left, it's been like that for years and doesn't seem to get any worse, though it does cause a groan at low revs/high torque. Local prop-shaft wizards said it wasn't cost effective replacing the coating, better get a new prop. So we left it. |
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