Installing a no slip lunch box locker and having clearance issues with my Dana 30 carrier

So I went to the fsm for my 1999 and it's giving me a range of 70 to 90 ft lbs for ring gear bolt torque? Seems odd,I can't recall seeing a torque spec like this with a 20 ft lbs range?

Any advice here? Should I just aim to torque all bolts to the same spec and as long as I'm between 70 and 90 I'm good?

View attachment 598759

That’s not a range, and you don’t pick the middle. That means to torque in two steps: First all bolts to 70, then 90.

At least, that’s the way I’ve always understood it.
 
That’s not a range, and you don’t pick the middle. That means to torque in two steps: First all bolts to 70, then 90.

At least, that’s the way I’ve always understood it.

Most of the things we had in the military had specific torque settings. There were some though in our tech data like that (70 - 90 ft/lbs, for example) that we were taught to use any value within that range, but it was common practice to pick the middle. We did have a couple things where we had to torque everything to a specific value, then retorque to a higher value, but our tech data clearly stated to do it in a specific order. 🤷🏻‍♂️
 
That’s not a range, and you don’t pick the middle. That means to torque in two steps: First all bolts to 70, then 90.

At least, that’s the way I’ve always understood it.

Is this what it's trying to say here in the install procedure when it says "alternately tighten" as in alternately tighten to 70 then 90 ft lbs? I took that to mean tighten the bolts opposite of one another.

Screenshot_20250306-192848.webp
 
Is this what it's trying to say here in the install procedure when it says "alternately tighten" as in alternately tighten to 70 then 90 ft lbs? I took that to mean tighten the bolts opposite of one another.

View attachment 598841

I take that the same as you. Tighten bolts opposite of each other. That’s how I did my Dana 30 ring gear. Once they were all torqued in that manner, then I just went around in a circle to make sure they were all good. I do the same with lug nuts.
 
So I went to the fsm for my 1999 and it's giving me a range of 70 to 90 ft lbs for ring gear bolt torque? Seems odd,I can't recall seeing a torque spec like this with a 20 ft lbs range?

Any advice here? Should I just aim to torque all bolts to the same spec and as long as I'm between 70 and 90 I'm good?

View attachment 598759
Here’s a chart from Revolution gear, Dana 30 the torque states 55 or 75 lbs. Top of chart 3/8” bolts 55lbs, 7/16” bolts 75lbs.
https://revolutiongear.com/differen...coum62-t2_fb4yPs5Y1mF6MyzlR70OiqwvuX_BX5xPKJV
 
What about looking at this differently...out of all the numbers...has anyone or can anyone recall a ring gear sheering off the carrier?

-Mac
 
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It appears they do, different years or versions of the Dana 30. you could drill out the carrier for the larger bolts if needed

So if you didn't need to drill the carrier, 55 is right. But also, that's the size from factory, which says 70-90? 🤔
 
So if you didn't need to drill the carrier, 55 is right. But also, that's the size from factory, which says 70-90? 🤔

You would need to check bolt size to be sure. You can take one bolt out of the ring gear to check it. If it’s the 3/8” you are fine. If you find 7/16” you would have to retorque to 75. You could do it in the vehicle but you would need to reloctite the bolts so it would require removing each one.
 
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You would need to check bolt size to be sure. You can take one bolt out of the ring gear to check it. If it’s the 3/8” you are fine. If you find 7/16” you would have to retorque to 75. You could do it in the vehicle but you would need to reloctite the bolts so it would require removing each one.

I suppose if they are the 7/16 and were only torqued to 55 I don't need to replace them....

Aha. The master install kits don't say size but the r&p from RGA says 3/8 for the 30 and both for the 35. But I do remember using the smaller holes in the 35 now that I think about it... I guess I'm good. Thanks!!

I guess you get a pass this time, Yukon 😒