Re: Ford Endeavour : Official Review Quote:
Originally Posted by Kaypa Hi Guys,
I have a 3.2 Titanium purchased in October 2016. It has done about 37k kms.
After the first flat tire though, I was surprised when the lug wrench that came with the car did not fit the nuts on the tire. It kept slipping, and even damaged some of the nuts. At first I thought I was doing it wrong, but a couple of helpful taxi drivers / mechanics also tried and said it was the wrong size for the nuts.
Has anybody experienced this? I was, honestly, amazed. | Quote:
Originally Posted by Hellzboy I tried to change the spare but the spanner would not fit (over sized nuts) and some taxi guys helped but as luck would have it they could only loosen 5 out of the 6 nuts (one became free) and despite everything we could not change the tyre.
Back in Delhi I took the car to the service center and gave them a piece of my mind. There, one guy told me, that they have faced this issue of the nuts 'swelling up' due to repeated tyre rotation and balancing (my Endy had done 50k by then). I blasted them that if they had known about this then they should have recalled the car or advised to get them changed at any of the regular services. [b]
My vehicle is May 2016 model.
I too implore all Endy friends, especially the ones having done above 25k, to check the nuts with the spanner in their cars. I was with my family, in a place with no cellular signal and late evening and cold wind. I cannot imagine the ordeal if i would have had to leave my beast there, in the wilderness . |
Apart from the above posts by Kaypa and Hellzboy, there have been several other reports of Ford (Endeavour, Ecosport and some other models) lug nuts getting swollen. I faced this problem in my April 2018 Endeavour 2.2 Titanium recently. I was trying to remove a wheel myself and found that the wheel spanner supplied with the car was not fitting some of the nuts.
I searched for this problem online and when I Googled "Ford swollen lug nuts" I got huge number of reports about this problem from USA, India and elsewhere. It was obvious that it is a fairly common problem faced by thousands of Ford customers. Let me share some of the reports I found online : https://www.caranddriver.com/news/a1...awsuit-claims/ "They may look nice, but two-piece lug nuts on the wheels of millions of Ford vehicles can become swollen and near impossible to remove with a standard lug wrench, according to a complaint filed recently by law firm Hagens Berman.
As to the Ford lug nuts, the firm said millions of vehicles from a variety of makes and model years could be affected, but the complaint so far names Ford’s Fusion, Escape, Flex, Focus, F-150, and F-350 vehicles from the early to mid-2010s.
The problem is alleged to be that, rather than being fabricated completely out of steel, the lug nuts were instead made with a steel core and a chrome, aluminum, or stainless steel cap to match the vehicle’s wheels, according to the complaint. It claims that the lug nuts can swell and delaminate after changes in temperature and exposure to moisture. Vehicle owners then have to try (and apparently fail) to remove the swollen lug nuts with a lug wrench supplied with the Ford vehicles. Then they have to replace them." https://www.freep.com/story/money/ca...ap/1835282002/ "The power tools that service shops use to put wheels on and off can generate more force than the nuts are designed for. That can create gaps that let water and dirt in between the cap and nut. Standard tools don’t fit the nut, leaving the wheel stuck on the car." http://www.fordproblems.com/swollen-lug-nuts/ "Most lug nuts are one piece of hardened steel, but Ford chose a design that puts an aluminum cap over a steel core. The cap is notorious for swelling and delaminating when it gets hot, and it’s also a great place to trap moisture and promote corrosion."
With my own Mechanical Engineering and Materials Science background I theoretically analysed the problem taking into account the reports I found online and drew the following conclusions : 1) Ford decided to use composite (steel core covered with a shiny 'cap' made of some other metal / alloy) lug nuts purely for decorative purposes.
2) Due to an inherent design / manufacturing defect, the bonding / lamination between the inner core and outer cap is not very good and they tend to get delaminated.
3) Delamination is often caused by the use of pneumatic wrenches by workshops. Pneumatic tools are invariably used by all workshops worldwide because they quickly remove / refit the lug nuts. But the problem is that most of them apply vibratory torque, something akin to hammering. That is why they are known as 'pneumatic impact wrenches'.
4) Once even the slightest delamination takes place, a small gap gets created between the core and cap. Subsequently water / moisture enters the gap and corrosion starts. Corrosion is a chemical process and the presence of dissimilar metals which are far apart in the Electrochemical Series is the ideal situation for rapid corrosion. The products of corrosion cause swelling of the outer 'cap' because it is relatively thin and soft.
5) Once the cap swells up, the wheel wrench can't fit the lug nut. Furthermore, when delamination is complete, there is relative movement between the core and cap and even when a lug nut is tight it appears loose! Now let me come back to the problem in my Endeavour. I sent email to Ford India and requested them to change the defective lug nuts under warranty. They sent a mechanic to my residence who changed 4 out of 6 lug nuts in my affected wheel. I requested him to check the lug nuts in the other 3 wheels too. He did so and made the shocking observation that almost all the lug nuts were delaminated and some had started swelling!
I again sent a detailed mail to Ford India and they subsequently changed all the lug nuts free of cost under warranty. But since the new lug nuts appear identical to the earlier ones, I remain skeptical. But I have decided to never allow use of Pneumatic Wrench for removing / fitting lug nuts. Even during the recent replacement of my lug nuts I ensured that hand wrench was used. In my Endeavour, all wheels had been removed / refitted twice at Ford workshops during 2,500 km and 10,000 km service using pneumatic impact wrench.
To conclude, my advice to all Endeavour / Ecosport owners are : 1) Never allow use of pneumatic impact wrench to remove / refit lug nuts, including in Ford workshops.
2) Periodically, and especially before a long drive, take out the wheel spanner supplied with the tool kit and ensure it fits all the lug nuts. Turn the wheel spanner gently in clockwise and anti-clockwise directions over every lug nut to identify delamination. Request to Mods : Since this is a problem which also affects cars other than Endeavour, this post may be moved to a new thread if considered appropriate. |