9-inch pinion nut torque???

[NoAZ68]

Hello,
What is the pinion nut torque on my '68 rear end? I am replacing the seal and can't seem to find the proper torque spec, the guy at NAPA told me that I can pull it off to replace the seal. Any help would be greatly appreciated...

 

[Mr Joe]

Are you using a crush sleeve or shims on the pinion pre-load?? If you have shims, I use 205 foot pounds on the pinion nut. If you're unsure or using a crush sleeve, run the nut up very slowly until there is no up/down, in/out movement in the pinion. Continue to tighten, VERY SLOWLY, until you have 10-15 inch pounds (empty case would be 6-8) of drag on the pinion when turning it. Do not exceed 225 foot pounds on the pinion nut. I recommend NOT using an impact, some folks do.
I hope some of this rambling helps...

 

[73 toy]

Make sure you replace the crush washer, and if you over tighten it, replace it and try again. If I can remember it's around 3-7 pounds rolling torque. I had to use a 5 foot cheater and tightened it just a little at a time, constantly rechecking the rolling torque.

 

[Mr Joe]

If I can remember it's around 3-7 pounds rolling torque.

What does this mean??

 

[73 toy]

It is the torque it takes to turn the pinion shaft (on the nut after you tighten it), The resistance it takes to turn it. It's hard to explain, I'm not sure of the numbers, but it's around 7 in/lbs, I hope that helps.

 

[Skuzzlebutt]

What does this mean??

I believe he means in/lbs of torque to turn the pinion smoothly while the 3rd member is on a bench, or installed w/o axles or gear oil.
You need an in/lb torque wrench to set up gears properly. You need some other special tools too, but since you're only doing the pinion prelode, an in/lb wrench and a 200+ ft/lb wrench are what you need.

 

[Mr Joe]

I was just confused by the "pounds".. I know it's set by inch pounds. I usually set mine at 13-15 inch ponds for new bearings and 6-8 for old bearings....for a 9" diff..