Quote:

---

No vibration very smooth going down the track

---

Quote:

---

what if the pinion nut was not torqued to spec? could that cause this?

---

Quote:

---

Quote:

---

All 4 u joint bolts have been hitting something? ,The issue maybe the axle wrap up and putting drive shaft in a bind would be my best guess

---

That could be from when it hit the ground spinning at 100+ mph?

---

Quote:

---

We have seen this quite a few times and have done it once myself.Usually it's overtorque that caused the problem.I assumed my airwrench would only torque to 150# wrong.I was left holding the yoke in my hand.Many assume the torque setting for a pinion nut is 240+# or as tight as you can get it with a 2 foot cheater pipe.There are varied setting depending on the pinion stem diameter and if it's straight or tapered.These specs can range from 125#ft to 250#ft.Always check with the manufacture for the correct setting.My thoughts are use a new lock nut,locktight and tighten as needed,you can even center punch the nut in several places to insure it doesn't back off.

---

Quote:

---

What case was this ? 741 , 742 or 489 ? If a 489 did you use a solid spacer or the crush sleeve ?

Did you have a pinion snubber ?

---

489 case, solid spacer, and no snubber SS springs Just got off the phone with Richmond and because i got the gears from a friend and the receipt is gone, they will not help me...

Quote:

---

Quote:

---

We have seen this quite a few times and have done it once myself.Usually it's overtorque that caused the problem.I assumed my airwrench would only torque to 150# wrong.I was left holding the yoke in my hand.Many assume the torque setting for a pinion nut is 240+# or as tight as you can get it with a 2 foot cheater pipe.There are varied setting depending on the pinion stem diameter and if it's straight or tapered.These specs can range from 125#ft to 250#ft.Always check with the manufacture for the correct setting.My thoughts are use a new lock nut,locktight and tighten as needed,you can even center punch the nut in several places to insure it doesn't back off.

---

Pinion nut was tighten to allow for the correct preload on the pinion with new bearings it was set to 20 inch pounds of rotation drag..

---

The pinion nut does not set preload.The crush washer if used or if its a straight pinion shims are used to set preload.

Quote:

---

Quote:

---

Quote:

---

We have seen this quite a few times and have done it once myself.Usually it's overtorque that caused the problem.I assumed my airwrench would only torque to 150# wrong.I was left holding the yoke in my hand.Many assume the torque setting for a pinion nut is 240+# or as tight as you can get it with a 2 foot cheater pipe.There are varied setting depending on the pinion stem diameter and if it's straight or tapered.These specs can range from 125#ft to 250#ft.Always check with the manufacture for the correct setting.My thoughts are use a new lock nut,locktight and tighten as needed,you can even center punch the nut in several places to insure it doesn't back off.

---

Pinion nut was tighten to allow for the correct preload on the pinion with new bearings it was set to 20 inch pounds of rotation drag..

---

The pinion nut does not set preload.The crush washer if used or if its a straight pinion shims are used to set preload.

---

My correction on the set up I used the spacer with shims to set preload