glang Posted February 20, 2018 Share Posted February 20, 2018 Ive got a couple of shiney ends on my half shaft u/js so it looks like either the circlips or bearing outers have been rotating but hows this possible and is it going to be an expensive problem Quote Link to comment Share on other sites More sharing options...
mazfg Posted February 20, 2018 Share Posted February 20, 2018 Depends if you do it yourself? New UJ's required and possbily oversized circlips if the yokes have worn. Half-shafts will need to come out... Quote Link to comment Share on other sites More sharing options...
glang Posted February 20, 2018 Author Share Posted February 20, 2018 Thanks but whats rotating and why! Surely new u/js will do exactly the same so does it mean the half shaft or diff connector are knackered? Maybe I can give the yokes a little squeeze in a vice to close em up and so hold tighter........ Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted February 20, 2018 Share Posted February 20, 2018 Problem is that the yokes are worn enough to allow the cups to spin. They may or may not also be be splayed enough to mean that they would also need thicker circlips or shims to prevent the endfloat that leads to driveshaft clonk. The correct answer is new shafts....... Alternate "truths"........ in theory it is possible to remove the UJ trunnion forging from the end of the shaft (knock out cross pin and press of the spline) In practice..... they are REALLY well on there - and you'll have to get a replacement from somewhere that is worth the effort! And even if you get two off (one undamaged) you've then got to get one back on there! If still reasonably snug, one of the more serious Loctites might hold the cups. You'd need to resolve any endfloat issues before it set...... Nick Quote Link to comment Share on other sites More sharing options...
glang Posted February 20, 2018 Author Share Posted February 20, 2018 Thanks Nick, what a wind up as the forces trying to rotate the cups must be minimal (unless the bearings have seized of course) but I suppose over time the loading and unloading of the drive shafts has opened up the yokes. I think first, in keeping with my moniker, I'll try giving them a gentle squeeze to close up the 'eyes' as they appear quite ductile and so shouldnt shatter....... Quote Link to comment Share on other sites More sharing options...
Bitumen Boy Posted February 20, 2018 Share Posted February 20, 2018 Quoted from Nick Jones- Problem is that the yokes are worn enough to allow the cups to spin. They may or may not also be be splayed enough to mean that they would also need thicker circlips or shims to prevent the endfloat that leads to driveshaft clonk. The correct answer is new shafts....... Alternate "truths"........ in theory it is possible to remove the UJ trunnion forging from the end of the shaft (knock out cross pin and press of the spline) In practice..... they are REALLY well on there - and you'll have to get a replacement from somewhere that is worth the effort! And even if you get two off (one undamaged) you've then got to get one back on there! If still reasonably snug, one of the more serious Loctites might hold the cups. You'd need to resolve any endfloat issues before it set...... Nick I tried Araldite in the yokes once in an attempt to squeeze a few more miles out of worn shafts. I got about 2 miles down the road before it started knocking again... Quote Link to comment Share on other sites More sharing options...
mazfg Posted February 21, 2018 Share Posted February 21, 2018 Anyone know what size the circlips are for a GUJ115 UJ and where to get oversized ones from? Whilst I replaced mine last year...one of them does seem to be spinning also :/ Sounds ok..it's just something I noticed on inspection... GUJ101 GUJ101 Quote Link to comment Share on other sites More sharing options...
glang Posted February 21, 2018 Author Share Posted February 21, 2018 Paddock do oversize circlips but I dont know how to use them. What happens if they dont fit, can you fit one to one side only? Also Matthew do you think its the circlip spinning or the cup? Quote Link to comment Share on other sites More sharing options...
mazfg Posted February 23, 2018 Share Posted February 23, 2018 Quoted from glang- Paddock do oversize circlips but I dont know how to use them. What happens if they dont fit, can you fit one to one side only? Also Matthew do you think its the circlip spinning or the cup? Only fit them on the ones that are spinning. I got some from Paddocks before when I got new UJ's..but they didn't seem any thicker... :( having measured them..... Hmmm, circlip or cup...I just presumed it was the circlip? Quote Link to comment Share on other sites More sharing options...
glang Posted February 23, 2018 Author Share Posted February 23, 2018 I really hope its the circlip but what would force that to rotate if the cup remains stationary in the yoke? And if you fit only one thicker circlip wont it push the u/j off centre and cause vibration..... Quote Link to comment Share on other sites More sharing options...
Richard B Posted March 30, 2018 Share Posted March 30, 2018 Tight wad trick is to put a shim between the circlip and the U/J. Coke tins used to be about 5 thou Quote Link to comment Share on other sites More sharing options...
glang Posted March 30, 2018 Author Share Posted March 30, 2018 Thanks Richard, thats my kind of fix! Quote Link to comment Share on other sites More sharing options...
Bitumen Boy Posted March 30, 2018 Share Posted March 30, 2018 Quoted from Richard B- Tight wad trick is to put a shim between the circlip and the U/J. Coke tins used to be about 5 thou Shimming them is both easy and effective. I use a 1" circular punch, then snips to put a single cut from the circumference to the centre which helps a lot when wangling them into place. Quote Link to comment Share on other sites More sharing options...
sparky_spit Posted March 30, 2018 Share Posted March 30, 2018 On both of mine, which showed evidence of the cups spinning, I used Loctite Bearing Fit to secure them. Get everything absolutely clean, fit the cups and circlips which give no endfloat and make sure you are happy with the fit. Then run a good amount of Bearing Fit over the circlips. It's runny enough to soak into and under the circlips and bond it all together. Mine were fine for five or six years without any spinning, and came apart okay when I renewed the UJs last summer. I've done the same with the new ones. It may not be a proper engineering solution, but it works for me and I'm happy to use the car on rallies, 10CR, HCR etc. Quote Link to comment Share on other sites More sharing options...
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