 | Home > Td5 > Is it ok to drive without the front prop shaft ? |
 
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| Defender marto Member Since: 14 Mar 2016 Location: Wirral Posts: 128   
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As title says is it ok to. I am trying to find out where the vibration is coming from. It all started when I took the landy in to have a transfer box seal done, the seal that sit between the tranny and gear box. It started of as being a noiseless vibration kicking in at about 50mph and dies away when you go below. Last Friday I took it back to the garage to have it looked at and they said they greased up the uj's and sliders and it is happens again you will need new uj's or propshaft as they don't cost much. Since then the vibration has changed. When starting from stationary the drive feels a bit lumpy until you get to just over 35mph then I get a noisy vibration which then disappears just as you hit 40mph and it is ok till the speed drops to 35mph again. This weekend I changed the rear propshaft and it made no difference at all. So rather than going out and spending on another propshaft is it ok to drive without the front one. If it is and it still vibrates then I can only asume it is the tranny box which is at fault. Thanks for any replies. Marto
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14th May 2017 3:13pm |
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| LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11324
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Yes, it's a pretty standard way to diagnose this sort of thing. With the diff lock engaged, of course. Darren
110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia |
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14th May 2017 3:23pm |
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| Defender marto Member Since: 14 Mar 2016 Location: Wirral Posts: 128
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Thanks for the reply. Diff lock engaged means in 4wheel drive, but in my case with no front prop. Is it ok to drive without it for a few days as if the rain stops and let me take it off I will not be bothered climbing underneath is again till next weekend
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14th May 2017 3:29pm |
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| bankz5152 Member Since: 02 Feb 2017 Location: South London/North Kent Posts: 2187 
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Yep. I drove back from france fine with a blown diff!
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14th May 2017 3:51pm |
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| LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11324
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Your Defender is permanently in 4wd but the diff lock physically locks the centre diff so that power is split 50/50 all of the time. Yes, it'll be fine to drive like that for a while as long as you don't go mad or try anything like towing. Darren 110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia |
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14th May 2017 3:52pm |
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| Defender marto Member Since: 14 Mar 2016 Location: Wirral Posts: 128
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Thank so for the replies. I have taken off the front prop and taken it for a test drive, well once I engaged diff lock anyway would not move till I did as as stated there where a few more noises but no vibration. Having a look at the prop the uj's seem fine but the slider bit was very stiff and took a bit of force to get it to move. Took note of how it all lined up and pulled it apart and cleaned it up and re greased the tube but still a bit stiff. Put it back on and drove it again and it made no difference at all. Do you think it needs a new prop shaft or could it be something in the axel now?. Marto.
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14th May 2017 5:41pm |
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| LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11324
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It could quite easily be the prop. The problem is that testing them off the vehicle can sometimes not show any problem as it can be difficult to mimic the loads applied in situ. Darren
110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia |
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14th May 2017 8:52pm |
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| Defender marto Member Since: 14 Mar 2016 Location: Wirral Posts: 128
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Looking at new prop shafts now cheapest option for now and take it from there. What is a wide angle propshaft. And do I need one, or just stick with original. island4x4 sell it slightly cheaper that a normal prop. Marto
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14th May 2017 9:13pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17526 
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There will, if anything, be less play and slop in the driveline rather than more, since any backlash in the centre diff and front axle will have been eliminated. Just be aware that the vehicle may handle differently especially in slippery conditions. |
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14th May 2017 9:27pm |
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| gazman Member Since: 17 Aug 2015 Location: Liverpool Posts: 652 
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mine was exactly as you describe on my td5 90
the slider was seized and the prop was lined up in phase. The new one is out of phase and I have no vibrations 2014 - current ..... 2003 defender td5 90 (my car) 2009 - current .... 2005 zx10r |
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14th May 2017 9:40pm |
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| Defender marto Member Since: 14 Mar 2016 Location: Wirral Posts: 128
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What is this phase you mention?
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15th May 2017 7:37am |
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| agentmulder Member Since: 16 Apr 2016 Location: Outer Space Posts: 1324 
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UJs are more complex than I claim to understand but I do know that they do not transmit torque/rotational motion equally around a full rotation.
The two UJs can be aligned such that the oscillation effect is minimised (which is how your UJs are currently set up). If however someone pulls the sliding joint apart and then puts it back together in any different relative rotation between the UJs the oscillations will increase. Phased = UJs 'correct' with respect to each other. I'm unsure how this helped Gazman, maybe I misunderstood? Solved the bowel problem, working on the consonants... |
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15th May 2017 8:36am |
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| Balvaig Member Since: 19 Feb 2016 Location: Fife Posts: 732  
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Prop shafts are balanced from new and when you remove them you should mark the mating faces and refit to these marks. If they have been removed in the past and not marked , or are worn, then you can get vibration. If I remember correctly, you can refit with the mating faces rotated by 90 degrees. This can sometimes bring them back into balance and solve the vibration.
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15th May 2017 9:32am |
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| agentmulder Member Since: 16 Apr 2016 Location: Outer Space Posts: 1324
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Due to the yokes the bolts centres aren't equally spaced on my 2.4 puma so I cant do 90°.
Only 180°, so two options each end = 4 possible installs. Are the diff ends really 'matched' with the TF box outputs like that? Would 180° out on both ends make it OK again?? How much do the balancing weights play in to the phasing consideration? Solved the bowel problem, working on the consonants... |
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15th May 2017 10:02am |
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