pupstew Posted January 28, 2012 Share Posted January 28, 2012 Right so after thinking that the rhythmic noise when i free wheeled was a worn universal joint on the rear prop shaft i have today taken that to bits and installed the one i bought this morning. I took the car on a test drive and yep you guessed it.....no flipping change...still a rhythmic bumping noise when free wheeling..... So after a bit of hanging out of windows and driving along with others in the front we now thingk it is from the front drive train. Ive checked the operation of he brakes and also driven round in circles incase it is a hub bearing to no avail. Any guidance would be appreciated...... on the same note is it right that wnen i jack up one front wheel i can turn the raised wheel for full revolutions ...should the diff not stop this happening? Quote Link to comment Share on other sites More sharing options...
stuck Posted January 28, 2012 Share Posted January 28, 2012 Ehm, did you look at the front prop? Quote Link to comment Share on other sites More sharing options...
mmgemini Posted January 28, 2012 Share Posted January 28, 2012 Ehm, did you look at the front prop? Don't just look. Take the prop off and check both ends. Quote Link to comment Share on other sites More sharing options...
JimAttrill Posted January 28, 2012 Share Posted January 28, 2012 on the same note is it right that wnen i jack up one front wheel i can turn the raised wheel for full revolutions ...should the diff not stop this happening? The diff ALLOWS this to happen - that's what it's for. But put the gearbox into 3rd and turning the road wheel will turn the engine over. The wheel on the ground will not move. Quote Link to comment Share on other sites More sharing options...
pupstew Posted January 28, 2012 Author Share Posted January 28, 2012 the front prop is showing no signs of movement at all...im tempted to replace the universal joints on that too Quote Link to comment Share on other sites More sharing options...
mmgemini Posted January 28, 2012 Share Posted January 28, 2012 the front prop is showing no signs of movement at all...im tempted to replace the universal joints on that too Is that on or off the vehicle. If the front prop, front u/ j is seized you won't be able to tell unless the prop is off. Quote Link to comment Share on other sites More sharing options...
landroversforever Posted January 28, 2012 Share Posted January 28, 2012 While the prop is still on, grab it at each end and try to shake the truck. That will tell you if anything is too loose. Then get it off and make sure the UJs and slider are all moving smoothly . My old front prop wouldnt compress the slider even with a lump hammer Quote Link to comment Share on other sites More sharing options...
pupstew Posted January 28, 2012 Author Share Posted January 28, 2012 In fairness this is a check on the vehicle....right next job it take the front prop shaft out and replace the universal joints on this and make sure the shaft is sliding. Quote Link to comment Share on other sites More sharing options...
jbs Posted January 29, 2012 Share Posted January 29, 2012 One thing I got told many years ago-by someone with a damn site more experience than me with Land Rovers, was to chock the wheels and take the handbrake off as this will free up your rear prop so that you can see if theres anything amiss when trying to check the props: ie movement on the UJ's or the sliding joints etc hth John Quote Link to comment Share on other sites More sharing options...
landroversforever Posted January 29, 2012 Share Posted January 29, 2012 Not sure how thats going to help really? Other than allowing you to turn the rear prop when you have one rear wheel off the ground. The slider, you can't really check without the prop off the vehicle and the UJs pretty much the same. Quote Link to comment Share on other sites More sharing options...
pupstew Posted January 29, 2012 Author Share Posted January 29, 2012 right so i still think the next move is to cut my losses and replace the front prop uj's and see if that helps yer? Quote Link to comment Share on other sites More sharing options...
potato head Posted January 29, 2012 Share Posted January 29, 2012 If your uj's have grease nipples I would be inclined to pack them both along with the nipple on the prop and see if it makes any difference at all. It's a cheap 5 minute test that could save you replacing the uj's and if they are the issue you will be able to drive and the noise will go for a while but it will return. This is not a cure, just a highlight or elimination process that has worked for me in the past. Quote Link to comment Share on other sites More sharing options...
mmgemini Posted January 29, 2012 Share Posted January 29, 2012 right so i still think the next move is to cut my losses and replace the front prop uj's and see if that helps yer? Take the prop off and check. There may be nothing wrong with it...Why buy a prop if the one you have is fine ? Are you running drum handbrake ? Have you checked thew drum is nice and free with the H/ B off ? Quote Link to comment Share on other sites More sharing options...
cackshifter Posted January 29, 2012 Share Posted January 29, 2012 I have a couple of simple suggestions - before buying anything else, 1) make sure each hub turns nice and freely, ie a disc isn't catching as it turns, either on pads or shield, especially if you think it's once per wheel revolution. While jacked up before removing the wheel grab each wheel top and bottom and rock - there should barely perceptible movement 2) If you think it's from the front, take out the centre floor section under the cubby box and listen again (don't get near anything whizzing around) - you might get a better handle on its origin if the floor isn't in the way. Does it only happen on the overrun or does it happen all the time? Does it change or go when you apply the brakes? Nigel Quote Link to comment Share on other sites More sharing options...
pupstew Posted January 29, 2012 Author Share Posted January 29, 2012 right ive been on my back again tonight with the hand brake off and out of gear, there is a slight play on the front prop shaft so im going to repalce the Universal joints. Ive already had each wheel jacked up and checked for movement on the hubs, and checked all the disks are running freely / brakes pads not catching. The hand brake disk is also nice and free when off. The noise slows with the brakes but that i assumed is linked to the slowing of the wheels, but the sound doesnt go with application of the brakes. Others think that the sound is faster than one wheel revolution so it does point to the prop shafts again.... Quote Link to comment Share on other sites More sharing options...
cackshifter Posted January 31, 2012 Share Posted January 31, 2012 Ok , that does seem to point ot propshaft; btw one other thing to check while you have the propshaft off is that it it phased correctly. Quote Link to comment Share on other sites More sharing options...
pupstew Posted February 1, 2012 Author Share Posted February 1, 2012 phased correctly? Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted February 1, 2012 Share Posted February 1, 2012 It's the alignment, or more strictly speaking the misalignment of the yokes on each end of the propshaft. From memory it's 45 degrees out of alignment that's correct for the front prop.... EDIT: Edited to add page from rave Quote Link to comment Share on other sites More sharing options...
pupstew Posted February 2, 2012 Author Share Posted February 2, 2012 Ah see what you mean, the prop shafts were fine initially and have been marked to make sure that they remain in the same alignment. i've done the universal joints on the front prop shaft tonight and did finds some wear on the old UJ's, but in time honoured traditioni when everything was back together the noise was still there....so its Durham 4x4 for me on saturday i think... Quote Link to comment Share on other sites More sharing options...
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