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Fullraceflathead · 02-26-2020, 12:52 PM

Normally when torqued correctly to 100lbs it will stay tight. It will be so tight that it will require a puller to break it loose.
Once it becomes loose while driving and un noticed the taper will wear on both the axle and hub. Once this begins to wear the locking effect off the taper is lost.
A new hub may fix this provided the axles taper is still in decent shape. Worse case scenario would be both tapers ruined. This would take a lot of driving on a loose fit to happen. Both hub and axle would have to be replaced in this instance.
If the threads on the axle are starting to strip thus loose nut still coter pinned it is possible to rethread to the next size smaller. I made a video of doing this on my YouTube channel.
I torque my 9/16 threaded axle nuts to 80lbs and have had no problems for over 6 years now. Both of my axles were stripped and loose with the nuts still coter pinned when I bought my 1928 Roadster Pickup.
https://m.youtube.com/playlist?list=...5bcpNJQdDfO5H8

02-26-2020, 12:52 PM	#2
Fullraceflathead Senior Member Join Date: May 2012 Location: Chillicothe, Missouri Posts: 1,189	Re: rear axle taper/threads Normally when torqued correctly to 100lbs it will stay tight. It will be so tight that it will require a puller to break it loose. Once it becomes loose while driving and un noticed the taper will wear on both the axle and hub. Once this begins to wear the locking effect off the taper is lost. A new hub may fix this provided the axles taper is still in decent shape. Worse case scenario would be both tapers ruined. This would take a lot of driving on a loose fit to happen. Both hub and axle would have to be replaced in this instance. If the threads on the axle are starting to strip thus loose nut still coter pinned it is possible to rethread to the next size smaller. I made a video of doing this on my YouTube channel. I torque my 9/16 threaded axle nuts to 80lbs and have had no problems for over 6 years now. Both of my axles were stripped and loose with the nuts still coter pinned when I bought my 1928 Roadster Pickup. https://m.youtube.com/playlist?list=...5bcpNJQdDfO5H8 __________________ "If I asked people what they wanted they would have said faster horses." -Henry Ford "Primitive technology is not a design flaw" 1928 Ford Model A Roadster Pickup 1930 Gordon Smith Air Compressor 1941 Willy's Pickup 1960 Thunderbird-For Sale 1964 Buick Riviera 2x4 425 1965 Pontiac GTO, 455 Super Duty 2004 Dodge Ram SRT-10, V-10 Viper 1977 Charger Jet Boat,460 Ford,Jacuzzi Jet Front Engine Nostalgia Dragster,Supercharged 296 "Fullrace Flathead" Ford Engine Build up on DVD ask Last edited by Fullraceflathead; 02-26-2020 at 12:57 PM.