R&R N14 main bearings . How difficult?

For starters, I like youre quote, makes me laugh. Yes you can change bearings in a n-14 in the garage behind the house, but beware, these main bearings are not like any other bearings you may have changed before in anything else, it is a process that takes getting used to because you have to lock the lower bearing into the "wedding band" before you install lower cap, once you master that you will be fine, if you start truck and it runs long enough to build air pressure you have a winner. Good luck.

 

Not a hard job . But the back yard in is not very clean . You want to keep inside as clean as you can. You will need a good large torque wrench. Do not just change mains , feed it rod bearings when you do or have it done.

 

I want to say it was somewhere between $600-850 when the n-14 at work had rods and mains done. I'm not 100% sure but it was in that neighborhood. I thought it was pretty reasonable.

 

I would not worry about oil pump I rarely have seen them fail. If you have decent pressure now you'll have even better pressure after. As far as time goes your probly looking at around 6-8 hrs for the whole job rod and mains and pan reinstall. Of course this will depend on how many beers you give him during the job lol.

 

I didn't do mine until 1.3 mill. miles, and they were not that bad. The only reason we did it was because I had low oil pressure. After installation of new bearings, still low. Finally found loose wire going to oil pressure gauge.

I have 1.6 mm on the engine now, with no inframe. Neighbor has 18 trucks, all Cummins, 2 of the older trucks are N-14. One has 1.7mm, and the other 1.6mm, neither have an inframe.

So, if the truck has good pressure and was taken care of, I wouldn't bother at 6-700,000 miles.