, may I ask if the problem was resolved for us 2019 and newer PP1 owners here? I read the first 12 pages, but realize I was wasting my time since those were older cars. Hoping Ford fixed whatever the problem was. By the way, the correct torque from the service manual (at least back then) was reported as 98 ft/lbs + 45 degrees (1/8th of a turn). Is that still the correct spec for 2019 cars? Hope it's not an issue anymore. Otherwise, to check my 2019 Bullitt. Thank you.
The spec in my 2019 manual (dated August 2018) is 85 ft*lb and 30 degrees.Now that somebody else brought this thread from the dead
The difference between 98 and 85 is probably not much in terms of bolt stretch on a thread that size, both are probably just to get the joint fully seated. Guessing the thread pitch is 1 mm the difference in 30 and 45 degrees angle is about 0.002". I would like to measure the bolt stretch to see what the total is but for now I have no reason to remove the nut (< 4000 miles on my Mustang). It is a little disconcerting to see Ford change the spec so often!
You appear to know about bolted joints. I used to work at a company based in Illinois that did a lot of research on those. In this case with a splined joint that is a light press fit it seems there would be no rotational movement to make the nut turn. If that is the case is the joint relaxing to cause the loosening?
It was changed early on. 2016 MY at the latest.Makes sense to me. Do you know when was the nut changed? Wonder which one my 2019 with build date of August 2019 has
Did mine 8 months ago at about 29000 miles. Mine turned out to be the friction washer on the driver side only as well. Hub is still good. Read these pages and went thru an elimination process to get to the end result, being the washer. Like 2 others mentioned in this epic thread, i did not replace the washer, simply took out the old worn out and bent washer and put everything back on. No noise at all from the passenger side so i left it alone. Noise is completely gone, used to drive me crazy.
