Rear axle thread stripped

[Joe K]

Originally Posted by TDO

As a machinist I've did a lot of threads, first chuck it in a lathe and turn off all the old threads then weld up and re thread to original size.

This probably the best fix, but one has to be VERY sure of their welding. Definitely a job for liquid penetrant or mag particle.

But when done one can claim strength equal to if not exceeding the original material.

Joe K

[Ron in Quincy]

The original 5/8-18 axel nut is a special hardened nut; if you use a 5/8-18 nut that is not hardened it will strip the threads from the nut and sometimes ruin the axel threads. The axel nut needs to torque to as least 90 foot pounds then tighten enough to insert the cotter key.

I do not believe it is a good idea to cut the axel threads to the next smaller size as the axel carries a lot of safety load and if it fails it could result in a serious accident.

If you check a Dealers Price List there are more than one 5/8-18 castle nut listed, the axel nut is marked "Special"

Ron

[Charlie Stephens]

If you end up welding and rethreading or just rethreading to a smaller size be sure to run a brake drum retainer such as the one from Speedway http://www.speedwaymotors.com/Early-...iner,1981.html

If you replace the axle these retainers are still a good idea. Don't ask how I know.

Charlie Stephens