 | Home > Td5 > UJ/propshaft knocking |
 
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| shropshiredefender Member Since: 05 Jun 2017 Location: Shropshire Posts: 832   
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That looks to be on its way out.
It would be a good idea to get the UJ changed before it lets go and causes more damage.  |
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29th Aug 2018 5:58pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 19650 
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Those need replacing ASAP, don't delay.
They aren't overly expensive to replace compared to many parts, or alternatively replace the whole prop at cost. They are very risky to drive with in a poor state, and looking at that it looks like the seal has persihed and the roller bearings have or will fall out shortly! Hopefully someone else will give their views on it as well. Worth taking a look at your drive flanges and DM's splines to check they are lubed and not overly worn too. I had pretty much both at the same time, but hopefully yours is just Prop UJ's. Diesel$ Live$ Matter. β½οΈπ’οΈπ¨βπ§π§°βοΈ RED, WHITE & BOOST! π¬π§ |
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29th Aug 2018 6:00pm |
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| Greeny Member Since: 20 Mar 2018 Location: Buckinghamshire Posts: 272
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Thanks for the replies! So you would get onto them right away? Would you replace just that one UJ or all of them? Might be worth while replacing the prop shaft. Instagram - @Land_Rover_Defender
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29th Aug 2018 6:01pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 19650
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Front pair or rear pair, ideally both front and rear prop.
I did both front and rear UJ's on mine but if you need to use it very often you'd need to go easy in 2wd doing one at a time or both UJ's replaced at the same time. The most work involved is getting the old ones removed. The faster and easier option is to replace the whole thing but isn't the cheapest! Many have good results from eBay Hardy Spicer, Genuine are pretty damn expensive. Usually UJ failiure is caused by lack of greasing. Where is this one located out of interest? And yes, it does need sorting ASAP, it'd currently be an MOT fail I'd have thought. If you did go for doing the UJ's GKN are good, and the same as Genuine IMHO. I replaced UJ's front and rear on mine, so both were matched up. Diesel$ Live$ Matter. β½οΈπ’οΈπ¨βπ§π§°βοΈ RED, WHITE & BOOST! π¬π§ |
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29th Aug 2018 6:34pm |
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| shropshiredefender Member Since: 05 Jun 2017 Location: Shropshire Posts: 832
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I'd do both and replace then with grease able ones - then remember to grease them at every service
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29th Aug 2018 6:50pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 19650
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I'd agree with that, ideally more often than that really.
Diesel$ Live$ Matter. β½οΈπ’οΈπ¨βπ§π§°βοΈ RED, WHITE & BOOST! π¬π§ |
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29th Aug 2018 6:51pm |
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| Greeny Member Since: 20 Mar 2018 Location: Buckinghamshire Posts: 272
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Thanks for the replies! I will replace the UJ's on both the front and rear props for peace of mind.
Thanks Custom90Steve for the recommendations for where to buy them. I will get onto it and order some replacements. Instagram - @Land_Rover_Defender |
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29th Aug 2018 7:29pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 19650
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Youβre welcome. Blackwolf on here pointed me in the right direction originally regarding GKN HD UJβs.
They are good, and greasable is definitely the way to go. I use Castrol High temp lithium grease, but everyone has their favourites. The UJ replacement I done on mine transformed it along with other DM work required. If you use the search box on here there will be other posts here from when I done mine. Blackwolf had some valuable information he discussed with me such as use reference marks between yolk and flange etc etc. Any issues, post up on here and somone will be able to help. ππ» Diesel$ Live$ Matter. β½οΈπ’οΈπ¨βπ§π§°βοΈ RED, WHITE & BOOST! π¬π§ |
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29th Aug 2018 8:05pm |
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| Greeny Member Since: 20 Mar 2018 Location: Buckinghamshire Posts: 272
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Thanks, would you do both the rear and front UJs? The rear is the problem but I am tempted to do both. Instagram - @Land_Rover_Defender
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29th Aug 2018 8:07pm |
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| roel Member Since: 08 Aug 2009 Location: Lelystad Posts: 2039  
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Check them for play. If you feel any play change them, otherwise grease them and check if you see signs of grease at all 4 bearings at each UJ. Roel
1984 90 2.5 na Diesel - RR V8 (1994-2001) 1997 Camel Trophy Discovery 300TDI (2001-2009) 2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts. 2003 90 Td5 (2009-now) |
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29th Aug 2018 8:51pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 19650
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All 4 UJβs are best replaced really even if no obvious sign of wear and you wonβt need to touch them replacement wise for the longest period. Especially if kept greased every 6 months / yearly.
The trouble is if you replace both UJs on the rear prop and leave the front the front may begin to fail in the near future. Much the same scenario as I had, front didnβt seem to have any problem but the rear did. I replaced all four UJβs regardless so itβll be a job finished for a long time except for regular greasing. Diesel$ Live$ Matter. β½οΈπ’οΈπ¨βπ§π§°βοΈ RED, WHITE & BOOST! π¬π§ |
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29th Aug 2018 9:03pm |
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| Maxxed_Ross Member Since: 06 Jun 2012 Location: Bathgate / North Sea Posts: 340  
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you can dive on a failed UJ, but it's not fun
I had one start to let go when driving to Fort William. Started as a slight knock as you describe and by the time I got to the camp site it was a proper bang every time it loaded / unloaded. Short version of the story the Green Flag were going to PROPERLY bend me over to recover it because of where I was. The decision was taken to try and drive it as far south as I could. keeping it below 40 mph I managed to limp it all the way back to Lix Toll garage (105 miles away!) without it failing totally... but it was the most nerve wracking drive I've ever done and it totally wrecked the drive ends. Saying that the replacement complete shaft was still a fraction of what the recovery fee was going to be
I echo what has been said already though. I have the greasable GKN UJs now and service them every 6 months with a single shot of grease. Well looked after they'll last much longer than the standard ones 2013 Discovery 4 HSE Lux | 2001 Defender 90 TD5 | 2007 Prodrive RB320 |
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30th Aug 2018 5:56am |
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| GREENI Member Since: 22 Aug 2010 Location: staffs Posts: 10367
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Hey up Jonny, I've only skim read the thread, so not sure if it's been said.
On flat ground and safe, (chock wheels but leave a few inches space) so it can't roll off. Take your handbrake off and in neutral. This will take all load off the props, then get underneath and try move the props at the ends, they should be solid, worn uj's will noticeably have play. It's not essential to replace all uj's, but if you like 'cost no object maintenance' then it makes sense. A whole new prop could be cheaper to replace yourself, than getting a garage to replace your uj's. A prop can be taken off with 2 X 9/16" spanners in around 20 minutes, so not a big job. Shame you're not closer as I love doing uj's, very satisfying. Also, by coincidence of discovering the uj's.. the clunk could be worn radius arm/chassis bushes worn. So when it's set up as above on flat ground etc, grab your rear wheel and move back n forward rigorously, checking the bush, any front rear movement will show wear. |
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30th Aug 2018 7:03am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 16931 
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A word of caution on this. It is entirely possible if you continue to drive with a "failed" UJ that at some stage the joint or propshaft yokes will fail completely, and when that happens the best case scenario is that there will be significant collateral damage as the propshaft flails around. Worst case is the leading end of the propshaft lets go, digs in the ground, and either rips the gearbox off its mounts, the axle off its mounts, flips the vehicle, or causes a significant loss of control. Whatever happens the risk of a major repair bill increases enormously. At this point the Fun Police would also probably point out that if you knowingly drive with a failed UJ you are (a) breaking the law by driving an unroadworthy vehicle and (b) consequently invalidating your insurance. It really isn't a good idea except in an emergency. if it is failing, change it. It takes less than an hour to change both UJs in one propshaft (or all three in the case of a DC front prop). |
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30th Aug 2018 8:56am |
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