discovery_dan Posted October 18, 2008 Share Posted October 18, 2008 Hello, I am looking at a seondhand main gearbox/transfer gearbox assembly for a 200 tdi discovery. I have noticed that there is some movement, only slight, of the front output flange of the transfer gearbox in the axial direction. These are no signs of oil leakage around the ouput flange. I just wanted to know if it is normal for there to be some float, or is it a sign of wear which will only get worse? If it is wear, is it easy to replace the front output bearing, or adjust the preload, or does this require a full strip down of the transfer gearbox? Thanks for the advice. Quote Link to comment Share on other sites More sharing options...
Disco-Ron Posted October 18, 2008 Share Posted October 18, 2008 A alittle movement is not uncommon, to replace the bearing is quitea simple job, esp if the box is not in the vehicle.... basically, remove flange, inside there's a biog circlip, remove, and then extract the output shaft complete with bearing...... All thats from memory, so please feel free to correct me....!!!!!!!!!!!!! Quote Link to comment Share on other sites More sharing options...
Les Henson Posted October 18, 2008 Share Posted October 18, 2008 The play in the front output shaft bearing is quite normal. The rear output bearing is a taper roller and there should be no play in it, but the front is a ball and race, which self-centres when it rotates. Total vertical play in it is about 4mm. Les. Quote Link to comment Share on other sites More sharing options...
discovery_dan Posted October 19, 2008 Author Share Posted October 19, 2008 Thanks, sounds like its not too much to worry about. Cheers. Dan Quote Link to comment Share on other sites More sharing options...
discovery_dan Posted October 19, 2008 Author Share Posted October 19, 2008 Hi thanks for the info, to extract the ouput shaft, does this require a puller or similar device or does it just pull out? May well be worth just replacing it and the oil seal while it is easy to do. Thank you Dan Quote Link to comment Share on other sites More sharing options...
Les Henson Posted October 20, 2008 Share Posted October 20, 2008 I doubt there's anything wrong with the shaft itself. To remove the flange you unbolt the prop, then undo the big nut that's exposed and the flange will just slide off the shaft. The seal can be levered out and a new one fitted. Check the land (the area of the flange that the lip of the seal runs on). If it's grooved, then replace it also. Les. Quote Link to comment Share on other sites More sharing options...
discovery_dan Posted October 22, 2008 Author Share Posted October 22, 2008 Hi Thanks for that, apologies but I meant to ask how easy is it to replace the output bearing, I am just wondering if its worth doing while the gearbox is out of the car, but I should imagine that to replace the bearing the transfer box has to be stripped to push it out of the casing? Thank you Dan Quote Link to comment Share on other sites More sharing options...
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