 | Home > Tdi > A Real Shocker! Advice Needed. |
 
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| Pickles Member Since: 26 May 2013 Location: Melbourne Posts: 3755   
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There are different grades of polybush. Which did you have fitted?
Pickles. |
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29th Nov 2014 10:12pm |
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| uncas Member Since: 22 Nov 2012 Location: Wentworth near Rotherham Posts: 340 
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It's a common occurence how many miles has the shockers done? were they over tightened or even not tight enough I've also had it on a V8 with standard shocks 110 and a Disco 1 on Procomp es9000
Uncas |
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29th Nov 2014 11:23pm |
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| Ellisboy Member Since: 13 Oct 2013 Location: Deep South Posts: 539 
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Pickles: they are the red type of polybushes
Uncas: the shocks are de carbon gas type,which I fitted at 71,000 miles and it's now showing 127,000. I do live by the sea and everything rusts here. |
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30th Nov 2014 9:53am |
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| theorangebandit Member Since: 03 Jun 2013 Location: Stowmarket Posts: 862 |
Sounds like it could be anything. But for one shock to fail I would say the fault is the shock. Simply change it. My opinion is that polybushes aren't a requirement and in my experience have caused more problems than they've resolved. If there's no issues with the rest of the set up Id say replace the shock with the same as before and the same bushes too. Its not impossible you over tightened them given that the whole thing relies suspending its not difficult to cock it up. You mileage tells me they have lasted a fair while and with the sea air to combat also, id say again that the fault isn't your fitment. Just renew it bud
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30th Nov 2014 9:59am |
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| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558 
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I have often thought about replacing the standard rubber with the poly bush style but wondered about the extra stiffness being transferred to something else , and putting extra flex load on a rod/arm/mount etc
I know there must have been thousands of polyurethane bushes fitted ,so don't know really if it could be a problem or not |
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30th Nov 2014 10:03am |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610 
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I fitted the same red 'performance' polybushes some time ago. Sounds to me that when the shocks were fitted the nut may well have been overtorqued. I very nearly made a mistake with the lower shock absorber securing nut thinking the upper and lower had the same torque settings. If not as stated it may have been a flaw in the shock itself. It will become clearer when you remove it. If you go through life with your head in the sand....all people will see is an ar5e!!
Treat every day as if it is your last....one day you will be right!! |
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30th Nov 2014 10:06am |
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| Ellisboy Member Since: 13 Oct 2013 Location: Deep South Posts: 539
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Removed the shocker earlier today,top nut was easy as I'd copper greased it
K9F, yes I possibly could have over tightened it when fitting. Looked in my book and it was 2005 when rear shocks were fitted.Still compresses ok ,but as you can see in the pic it's quite rusty at the bottom  Click image to enlarge |
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30th Nov 2014 3:39pm |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610
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Rust would have a long way to go before causing a failure such as that. If memory serves me correctly on a Puma the top is secured at 85NM and the lower at 29NM I think. If you go through life with your head in the sand....all people will see is an ar5e!!
Treat every day as if it is your last....one day you will be right!! |
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30th Nov 2014 4:12pm |
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| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558
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sometimes you can get rust really eat away in side rubber collars , ive seen front drive shafts rust enough to break under the rubber dunut looking things on front wheel drive cars when the rest of the shaft has just very very light surface rust
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30th Nov 2014 4:21pm |
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| Retroanaconda Member Since: 04 Jan 2012 Location: Scotland Posts: 2557 
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I've recently put a set of Koni shocks in my 90. They seem to be ok so far, though I had to tighten them up all the way (i.e. until the nut bottomed out) to get them to stop knocking. Maybe the rubbers were too thin out of the box, I'm not sure. But for the cost of them I wasn't very impressed by that.
Fronts are still knocking slightly as I've not had a chance to do up the bottom nuts a bit more yet. |
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30th Nov 2014 4:45pm |
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| roel Member Since: 08 Aug 2009 Location: Lelystad Posts: 2039  
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I had Koni Heavi Tracks under my Camel Discovery. I loved them.
On my 90 I still use what I have lying around, I first have to finish the rest before I finalize the suspension. You have to tighten the nut till the bottom ring lands on the thicker part of the shaft. It was nice and snug on mine. 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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30th Nov 2014 6:23pm |
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| NickH Member Since: 02 Nov 2014 Location: Halifax Posts: 204 
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I have seen this before several times.
Firstly polybushes of any grade are not very good for land rovers. Yes the handling is transformed when the polybushes are fitted, its going to be, because you are replacing a squashy rubber bush along with its cushioning effect with a plastic bush that has no give whatsoever. Those loads that would have been absorbed by the rubber have to go somewhere. What happens is any bolts securing the suspension components are subject to far more harsh loads so they wear themselves and the the holes they go into. Radius arms with poly bushes require tightening regularly until you get to a point where you have to replace the bolt and polybush. When you remove the bolt its holes are always worn oval. The same applies to the shockers, check the hole in the axle which the shocker goes through, I bet its worn far bigger than it should be. Another factor is the shocks themselves, there are many better than what land rover fit but a lot of these shocks have a thinner threaded rod than standard LR ones, I dont know why this is but coupled with polybushes the shocker rod gets a ring worn in it were it goes through the axle making it thin enough to snap off !  2003 Td5 90
2013 sport hse 2012 700 raptor quad 2012 siromer 4x4 tractor |
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30th Nov 2014 9:55pm |
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| Retroanaconda Member Since: 04 Jan 2012 Location: Scotland Posts: 2557
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The reason I was wondering was because one of the rear bushes on mine went like this when I first tightened it up to the specified torque and drove it for a while.
Click image to enlarge Undone it and re-tightened, anyway I'm sure it'll be fine. Shocks seem to be good, though a little harsh perhaps. That may be because I've set them on too high a setting (2). |
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30th Nov 2014 11:12pm |
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| AndrewS Member Since: 10 Apr 2007 Location: Hereford Posts: 3707 
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In my experience the 'de carbon gas type' shock are crap and break just like yours have. Even when fitted correctly.
This is the typical scenario when overlanding. Fit the De Carbon shocks Load the truck up to go to overland Put the standard shocks in with the overland spares Drive around Break a shock Replace it with the standard one Drive around Break the other shock Replace it with the standard one No more shock issues |
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1st Dec 2014 8:48am |
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