 | Home > Puma (Tdci) > Front wheel wobble Puma. |
 
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| MK Member Since: 28 Aug 2008 Location: Santiago Posts: 2407   
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I cannot follow the drive shaft thing. I guess the mechanic was not talking about the half shafts?
You did not mentioned it, but I assume yours has std suspension with std wheels and tires. Did the guy checked the panhard bushings and in fact all front bushes? I had a wobble at certain speeds as well, and it turned to be just a matter of wheel balance. Puma 110" SW ............................................................. Earth first. Other planets later |
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26th Jun 2024 12:53pm |
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| Very Rural Member Since: 04 Jul 2023 Location: Shropshire Posts: 58  
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Thanks,
No he definitely said front driveshafts... The wheels were re-balanced yesterday, still the same problem. Standard suspension, all bushes replaced. The problem was there before the bushes were replaced. David. |
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26th Jun 2024 1:06pm |
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| MarkBrown Member Since: 03 Oct 2022 Location: Mid Wales Posts: 443  
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A puma might be different but the on the older ones the tension needs to be set on the wheel hubs, or they’ll flop around on the swivel pins, causing shaking. Has this been checked? The steering arms need removing and a spring balance attached to the hub to measure resistance. I’m assuming the pumas are basically similar to the older ones. It’s often worse around a corner, particularly if you hit an uneven patch or bumpy but at the roadside. I can’t see how the weight of the half shafts would make any difference, but a partially diesel cv could.
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26th Jun 2024 1:12pm |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5842 
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Try swapping the front wheels to the back and back to the front to see if the issue goes/improves. 1999 Defender TD5 110
Regards John M0VAZ Econet Station 48 no clock |
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26th Jun 2024 1:38pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17320 
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This is complete piffle and extremely unhelpful. He may tell you the world is flat next. Pumas can suffer from vibration originating with the front propshaft, which, due to the nose-up attitude of the engine and transmission, has flanges which are not operating in the same plane. This is relatively easy to test, simply remove the front propshaft, lock the centre diff, and take the vehicle for a run. If the vibration has stopped then the problem is identified. If this is the problem the fix is simple but not cheap, fit a Gwyn Lewis double-cardan front propshaft (which is what the factory should have fitted in the first place). This vibration however is not wheel wobble. Wheels wobble is likely to be either an out-of-balance or damaged wheel or tyre (swap with the rears to test), a loose wheel, wear/slackness in wheel bearings, steering ball-joints or steering box, a defective steering damper, or wear in the swivel pins and consequent inadequate friction. Most of these are fairly quick and easy to check. MT pattern tyres in particular are notorious for causing this effect as they wear since if used predominantly on tarmac thye inevitably wear in strange and uneven ways. Edited to correct the spelling of Gwyn Lewis's forename, unhelpfully auto-errored by software! Last edited by blackwolf on 26th Jun 2024 4:41pm. Edited 1 time in total |
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26th Jun 2024 2:52pm |
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| shaynecm Member Since: 10 May 2024 Location: Norwich Posts: 63
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was just repeating the above. ^^^^^ this is the solution to me^^^
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26th Jun 2024 3:07pm |
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| MK Member Since: 28 Aug 2008 Location: Santiago Posts: 2407
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Last summer I had a wobble effect using in fact MT tires. The only solution was to swap one to the rear.
By now I regret buying those BFG MTs. Puma 110" SW ............................................................. Earth first. Other planets later |
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26th Jun 2024 4:56pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7987  
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180g between a short and long driveshaft? really? thats a complete load of crap.
steering arm bolt on tight? panard bushes tight steering damper on/off? swivel preload buckled wheel off set wheel holes worn? different tyre pressures tread pattern delaminating tyre. just some thoughts. Cheers James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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26th Jun 2024 4:56pm |
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| Outlaw1 Member Since: 11 Aug 2016 Location: east sussex Posts: 267  
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I had exact same problem at those speeds. Every thing was checked ,bushes .steering , bearings etc etc .
Put another set of wheels / tyres on .Hey presto wobble gone . It took 5 separate specialist  before i found one that correctly balanced them . No problem since. |
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26th Jun 2024 6:18pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20282
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You could have applied valve stem balancing beads via the valve stem.
Personally though I’d prefer correct balancing, and use the beads if needed, rather than solely relying on balancing beads as the weights will balance everything pretty accurately once done properly. Emphasis on properly, you can also have the weights put on the inside of the rim with boosts too, rather than ruining the exterior rim edge. Mine has both weights and Dynabeads, but that’s because I thought I had balancing issues and it actually was a prop shaft UJ bearing failure. Dynabeads do work well though, I’d only use the valve stem applied smaller ones though I’m not sure about larger the weight has to be precise. MTR’s typically need more balancing than most due to their design and weight. Finding a good tyre shop or mobile one is difficult, more commercial, agricultural or 4x4 specialist I think would be better. Some places I think find it a bit heavy, setting the bead can be a bit problematic too. ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️ |
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27th Jun 2024 1:12pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3403  
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Luckily the Puma is limited to 86mph (140kph) on standard map, otherwise you will get wobble again at 118mph once you hit the 2nd harmonic - if you are that brave
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I would look at all factors that affect steering damping, already listed in previous posts. Also worth checking your hubs/rims that there is no rust or corrosion that does not let the rim seat well on the hub. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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27th Jun 2024 2:56pm |
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