I've heard about doing this from a couple tranny guys and i'm wondering what any of you guys have heard and if you think it would be a good idea to do

 

I wouldn't, they seem to break at the heat affected zone when you weld them.

 

Probably depends on how you do it & what filler you use. I wouldn't use mild steel with a MIG welder if I had to do it, i'd probably TIG it.

 

after just going through this and having it over hauled, I would look up Quad4x4 on google and if your hasn't broken yet or just the 1st time, i would get his replacement nut. After reading his stuff and examing the stock stuff and the weld option his option really makes sense. My nut broke, welded a new one to the shaft. Broke 200 miles later. Only towing gross of 20k and chip turned down.

 

Welding is a short term bandaid.
This is the right way to fix it> http://quad4x4.com/NV4500%205th%20Ge...0Solutions.htm

 

If you are going to weld it, double nut it and then weld the two nuts together,don't weld on the shaft.

 

i welded mine pretty much all the way around with the old miller stick welder with good heat setting on it and i just done running a 1200 mile trip with it ,to me it seems fine

 

I welded my nut to the shaft about 4 1/2 years ago now. stitched it good and hot 7018 iirc. I abused the bag off that truck, no issues. sold it since an its still on the road just fine.

 

I wouldn't weld it to the gear, as gears are usually case hardened and I have reason to believe that it will effect that hardening. Here's what I did:

https://www.dieseltruckresource.com/...h+gear+nut+fix

Almost 2 years now and never another issue.

 

Thats what I did...double nut with lockite red,torque to 300 ft/lbs each nut and mig welded both nuts together in four spots...Did this about 4 months ago and haven't really drove the truck much yet..

 

When I would have one do that, I would spend the cash, and buy the output shaft that has full splineswhere the 5th gear goes on the shaft. Its the problem, there isnt a 100% contact on the gear to the splines, and no matter how tight you put the nut on, or unless you weld it, the gear walks on the shaft, and it comes loose. Its purely a badly engineered part. Thats it. When we went with the fully splined shaft, we never welded another nut, and it curred the issues. Never saw another one come in the door unless it hasnt had the upgrade yet.

Kasey