Axle Swap w/Auto 4WD T-Case. Anyone done it?

[duvinclunk]

We are in the process of having two Gladiators built and have run into problems with one of the vehicles. Both are Rubicon models and both are getting Currie Extreme 60 axles swapped in. The shop has completed the first truck. This truck has the Auto 4WD transfer case while the other has the normal one. When doing some testing and shakedown, we realized that the truck with the auto t-case isn't able to engage the front axles during 4WD in high or low. We believe we have done everything correctly and wondered if there is a possibility that the t-case on the auto 4WD vehicle has other sensors or motors that allow the auto system to work properly that aren't functioning due to the FAD and original axles being removed. We have the hubs manually locked and confirm the driveshaft is rotating. We have the Tazer settings done to indicate that the truck has removed factory lockers and removed FAD but we then get a 'SERV 4WD' error on the dash. With the driveshaft rotating we determine that the manual hubs are working and thus spinning axle shafts, ring, and pinion but would seem there isn't a connection happening in the t-case.

Has anyone done an axle swap with this t-case? Are we missing something?

TIA

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[Panthers65]

Are you saying the part time case (2H/4H/N/4Lo) is having issues, or the full time case (2H/4HPart/4HFull/N/4Lo) is having issues?

I would assume the full time capable case would have additional issues when trying to use in full time, since that allows slippage in the case between front and rear, it may be causing the front to "slip" because of the additional weight/changes to the axle.

the standard part time case and 4HPart of the full time case should both function the same, and be a direct connection between the front and rear driveshafts.

 

[duvinclunk]

Are you saying the part time case (2H/4H/N/4Lo) is having issues, or the full time case (2H/4HPart/4HFull/N/4Lo) is having issues?

I would assume the full time capable case would have additional issues when trying to use in full time, since that allows slippage in the case between front and rear, it may be causing the front to "slip" because of the additional weight/changes to the axle.

the standard part time case and 4HPart of the full time case should both function the same, and be a direct connection between the front and rear driveshafts.

Sorry for the confusion. The t-case that I'm referring to is the (2H/4HAuto/4HPart/N/4Lo) one. I was referring to the 'auto' of that t-case being the selection when the 4WD is on part-time based on slip. We are not concerned about the t-case working in the 'auto', just want it to with normal 4H and 4L.

 

[duvinclunk]

Nothing?

 

[ShadowsPapa]

This truck has the part-time 4WD transfer case while the other has the normal one.

Part time transfer case is the "normal" one. It's the stock version.
If it has the full time position it's the optional transfer case.
There must be a way to tell it that the front axle is locked. With the part time it won't matter much because there's no differential action between the front and rear outputs of the transfer case but with the full-time last thing you want is it engaging with the front axle not locked.
But both should have had sensors, if I recall correctly.

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