Find out if those bolts can be reused before you do anything
Post in thread 'FSM (Factory Service Manual) Corrections' https://wranglertjforum.com/threads/fsm-factory-service-manual-corrections.64096/post-1176152
There was some discussion about this in the FSM corrections thread, but no real resolution.
@hosejockey61 any chance you can help set the record straight on Dana 30 ring gear bolt torque spec?
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
I set them at 80
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.
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
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.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
Clear as mud. Do they sell two different ring gears for the Dana 30?
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
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?![]()
Clear as mud. Do they sell two different ring gears for the Dana 30?
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.