Josh Posted March 26, 2009 Share Posted March 26, 2009 Hello, Ok i have a Discovery 98 300tdi manual. Last week it started to get a vibration from the front end of the drivetrain. Turned out a UJ on the front prop had gone. As I had to be at work the following day and couldnt get hold of any new UJ's, a mate kindly provided me with a spare discovery front prop (identical to the one removed). We checked the spare prop was in good nick, which it was, then fitted it. Heres the problem, since then in 3rd gear at around 30mph/2500rpm theres a vibation/shudder which i believe is coming from the front axle as it can be felt through the steering wheel. Its more apparent under load, going up hill. I have had the prop back off and checked the universal joints and slpines and they are fine. Any ideas what it could be? Much appreciated Quote Link to comment Share on other sites More sharing options...
DrRob Posted March 26, 2009 Share Posted March 26, 2009 It might not be in balance.....perhaps due to being taken apart and not put back "spline to spline"...if that makes sense. Propshaft clinic gets the thumbs up from a lot of fellow forumers.... Quote Link to comment Share on other sites More sharing options...
cipx2 Posted March 26, 2009 Share Posted March 26, 2009 You can check these: - if the rear yoke on the shaft is 2 splines ahead of the front yoke (that;s what DrRob means by "spline to spline") - if the mating flanges on both the diff and the transfer box are not damaged (check for eccentricity and run-out). Quote Link to comment Share on other sites More sharing options...
Josh Posted March 26, 2009 Author Share Posted March 26, 2009 Thanks for the feedback, I have just seperated the two sections of the prop (marked them up) and the spline will only allow the prop to slide together in one particular position. Any other way and it gets jammed and i dont want to force it. it would apperar Cipx2 that it is 2 splines ahead of the front yoke. As for the flanges. They seem to be fine. No play in them. With the prop in position there is about 0.5" of 'take up' before the diff engages but i think thats normal? Could it be a chipped tooth in the diff or a problem with the halfshafts? Quote Link to comment Share on other sites More sharing options...
cipx2 Posted March 26, 2009 Share Posted March 26, 2009 No, no chipped tooth or halfshaft problem. The easiest way I see to solve this is to replace the worn UJ on the old propshaft and use that. Quote Link to comment Share on other sites More sharing options...
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