Right Eaton ELocker for 05 Rubicon Axle?

[cpwolf]

I’m looking at an Eaton E Locker for my Dana 44 2005 Rubicon front stock locker replacement with 4.88 gears. I’ve looked and it seems to be the right one, it’s used, but, looking at the description of that part on Summit like you see in the pic says 3.73 and down and I am wondering if that means down as in lower gears, higher #, it says:

Summit description

Fits 3.92 ratio and numerically higher, Jeep Rubicon models will need to use the 3.73 and down style carrier.


used Locker
Description:
EATON ELOCKER® DIFFERENTIAL 19969-010; DANA 44 FRONT OR REAR; 30 SPLINE; 3.92 AND UP.

 

[jjvw]

Rubicons only need 3.73 and down if you are going to reuse the existing 3.92 and up thick cut ring gear.

If the R&P is new, then anything Rubicon can be ignored and normal carrier breaks and standard cut gears can be used.

 

[sierradmax]

19977-010. Did the locker give out?

 

[cpwolf]

19977-010. Did the locker give out?

Not give out, but I just did a check, and the front pump isn’t turning off. I haven’t had time to do a full on check on why or where. I had an Eaton for Dana 30 I sold, and over the break just had a search for used Dana 44 and could shelve it for a while if needed.

I need to go through it, your axles have been solid, just haven’t had many chances to really use them, ha.

So for my axle I would need the 19977-00 Eaton for this gearing?

 

[cpwolf]

19977-010. Did the locker give out?

The description on this 19977-010 says

“Fits 3.73 ratio and numerically lower”

With 4.88’s that seems wrong? I’m not an expert on these ha, seems like I get them backwards

 

[gasiorv]

If you have thick cut 4.88 (which is what you would have if it was installed on stock rubicon locker) then you want the 3.73 and lower.

 

[sierradmax]

This a good representation showing the Dana 44 carrier break.

https://wranglertjforum.com/threads/thick-vs-standard-gears.57709/post-1017283

 

[cpwolf]

If you have thick cut 4.88 (which is what you would have if it was installed on stock rubicon locker) then you want the 3.73 and lower.

This a good representation showing the Dana 44 carrier break.

https://wranglertjforum.com/threads/thick-vs-standard-gears.57709/post-1017283

Ok, so I learned something.

The Rubicon with stock Rubicon locker needed the lower number 3.73 and below because of the deck height.

Makes sense, and thanks for the other thread, explains it.

 

[cpwolf]

This a good representation showing the Dana 44 carrier break.

https://wranglertjforum.com/threads/thick-vs-standard-gears.57709/post-1017283

Ok, thanks for this education.

The 4.88’s you put in would have to be thick cut to work with the stock Rubicon locker. So, if I want to get an Eaton ELocker, the one you listed that fits the 3.73 and lower, would fit the aftermarket thick cut 4.88’s.


Unless I wanted to get new ring and pinion, which I don’t, because swapping the one you listed should be much easier, and I’m not big on buying not needed parts ha.

 

[sierradmax]

Ok, thanks for this education.

The 4.88’s you put in would have to be thick cut to work with the stock Rubicon locker. So, if I want to get an Eaton ELocker, the one you listed that fits the 3.73 and lower, would fit the aftermarket thick cut 4.88’s.


Unless I wanted to get new ring and pinion, which I don’t, because swapping the one you listed should be much easier, and I’m not big on buying not needed parts ha.

exactly. The only thing you'll need to do is measure and repeat backlash. Pinion depth is already set. 9 times out of 10, existing carrier shims will work. I'd suggest some new ring gear bolts and thoroughly clean the ring gear so no oil contamination on RG thread bores.

 

[cpwolf]

exactly. The only thing you'll need to do is measure and repeat backlash. Pinion depth is already set. 9 times out of 10, existing carrier shims will work. I'd suggest some new ring gear bolts and thoroughly clean the ring gear so no oil contamination on RG thread bores.

Got it. Just the info I needed.

Hope your ankle is doing well, Merry Christmas.

 

[cpwolf]

So I had a used Dana 30 Eaton E Locker that I had never used, sold it for $600 last week, then found this
19977-010 new in box from a shop that bought for a job then they ended up not using it. Got it for $700, they are $1,350 new plus shipping and tax, so pretty solid deal.

I’m gonna shelf for now and get the time to diagnose what’s up with the pump running, and worst case this is ready to go front or rear if I ever bomb one, ha.

Thanks for the steering on which model, turns out even better finding a new one literally 15 minute drive from my house.