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| Bluest Member Since: 23 Apr 2016 Location: Lancashire Posts: 4204   
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Are these the correct drive flanges for a 2007 Puma 110? I assume they are the same on all four corners. Tried to call Paddocks but the phone queue is never ending.
http://www.paddockspares.com/ruc105200g-dr...turer.html 2007 110 TDCi Station Wagon XS |
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31st Aug 2017 11:47am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17346 
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Yes (unless you want to fit better ones such as Ashcroft 859s).
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31st Aug 2017 1:08pm |
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| bankz5152 Member Since: 02 Feb 2017 Location: South London/North Kent Posts: 2147 
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+1 the best way.
Dont like fitting HD flanges as it changes the point of failure to something more expensive like shafts/diff/prop etc.. Would much rather break a £20 flange that takes 10mins to chnage! |
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31st Aug 2017 1:38pm |
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| rallysteve Member Since: 10 Feb 2014 Location: Cumbria Posts: 2225 
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Not intending any offence, but I dont agree at all with the 'point of failure' argument.
The failure of the drive flanges is not due to high torque application or impact causing them to break which would otherwise break the half shaft or similar (hence why half shafts get broken) but self inflicted damage caused by impact between the faces of the splines or 'fretting' to use correct terminology. The more slack in the splines, the greater the rate of fretting eventually resulting in total failure of the softer drive flange splines. Hence why old range rovers and later 90s with one piece halfshafts dont fail. If there is no play between the splines then the wear would be non existent and there would be no failure. There certainly would not be a higher failure rate of the diffs, props, gearbox or halfshafts. In fact the driveline slack caused by the play in the splines (amplified by 3.54 times of the diff ratio) is likely to cause much more damage to the transmission. Although I run ashcroft flanges all round myself, a good condition OEM drive flange will be fine. As already said, lubrication is key to longevity. The problem was less pronounced on Series vehicles which had no seal within the stub axle thus allowed oil to propagate from the swivels at the front and axle case at the rear to the drive flange splines and wheel bearings. Most defenders now use grease filled swivels and have seals in all stub axles to prevent leaks. Sadly this usually results in dry, rusty and worn flanges. I have debated fitting grease nipples to the caps of the HD flanges I have to allow lubrication to be forced through the splines at service intervals. However I normally put a small volume of EP80/90 in the screw on caps. Steve 02' 110 TD5 Double Cab Rebuild Thread |
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31st Aug 2017 2:06pm |
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| bankz5152 Member Since: 02 Feb 2017 Location: South London/North Kent Posts: 2147
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Very good point. Hadnt thought of it much that way round. Just seen flanges fail through torque sheering the "teeth" off, hence my previous post!
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31st Aug 2017 2:15pm |
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| rallysteve Member Since: 10 Feb 2014 Location: Cumbria Posts: 2225
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Indeed as you say when flanges finally fail (after the owner has put up with an amazing degree of slack in the transmission) people often assume it has failed due to torque alone. However,as my front CV joint can testify, the shafts, are generally the weakest component in the torque path.
The trouble is, as with quite a few of these similar things on the internet, they tend to get repeated in multiple forums and becomes 'common knowledge' without any basis. Not meant as a dig at you at all, its just what tends to happen with things on forums. As a whole, this forum is very good for honest, factual advice unlike other forums I have been involved with which are full of 'Use search function' replies to every thread and people blindly reciting the same things without understanding. Just so happens that the whole drive flange topic, along with drilled/grooved/slotted brakes are my hot topics (pet hates) 
Steve 02' 110 TD5 Double Cab Rebuild Thread |
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31st Aug 2017 2:32pm |
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| bankz5152 Member Since: 02 Feb 2017 Location: South London/North Kent Posts: 2147
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Haha i know it wasnt a dig! Always happy to learn
Would you go on about the discs? I know drilled are poor for off roaders but what about slotted alone? |
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31st Aug 2017 2:59pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17346
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Rallysteve, you are bang on the nail with your comments!
The idea that fitting HD flanges "move the point of failure" is absurd, another of the completely nonsensical internet myths. If you overload a transmission in good condition, either a CV joint or a halfshaft will fail. |
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31st Aug 2017 3:43pm |
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| zsd-puma Member Since: 09 Aug 2016 Location: Kent Posts: 2720 
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I think the myth about the drive flanges being a deliberate failure point was just dreamt up by those with rose tinted glasses. In order to justify repeated flange failures to Toyota owners.
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31st Aug 2017 3:55pm |
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