Front Axle Slipping/4WD Slipping - Nortrac 254

[430488]

This is great! What does the UNC and NL and L mean?

 

[ptsg]

This is great! What does the UNC and NL and L mean?

UNC means Unified National Coarse thread. UNF means Unified National Fine thread

NL = Non lubricated threads
L = Lubricated threads

That chart should cover most of the stuff needed on a daily basis.

 

[430488]

Just an update. I got it all back together and everything seems to work fine. Attached are a few more photos. It wasn’t too bad but I hope I don’t have to do it again. I appreciate everyone’s assistance!

 

[stevem5215]

Now just remember to only use 2wd when doing "ram into stuff" with the loader. That 4wd assist isn't heavy duty and there's been lots of people over the many years that have broken those front axles.

 

[CaptTomJ404]

So I had time today to dig into the tractor It was pretty easy to remove the front axle. Four big bolts. Two in front of the differential and two behind. Disconnect the steering knuckle on the left side and two people can roll the axle out. I popped the cover on top of the axle and quickly saw the 6 bolts that hold the ring gear onto carrier were all sheared. Unfortunately I had to disassemble the whole differential to get the ring gear out. Next weekend I will work on drilling out the broken bolts and getting it back together. Not an expensive repair but a little time consuming.

I have a 2005 NT254 and I'm in the process of replacing the clutches, rear main oil seal, pilot bearing, and throw out bearing....now going to try and line it up to get the two halves back together. Good pics on the sheared bolts.