Factory front locker (1 Viewer)

[Jstawgn]

No worries. I today's open market, it does not really matter. As long we could find the part number, it does or really matter where we could find it.

 

[bjowett]

Things really get interesting when we look at the part time A.D.D 4x4 engagement on the new Tundra. The same mechanism that locks the LC/GX diff also locks, in a slightly different form, the cv axle to side gear for the A.D.D. I’ll place my bet on Toyota messing around with the design enough so that converting it to a locker won’t be easy, or done with off the shelf parts… but we’re pretty crafty around here.

Here’s disassembled 3rd gen Tacoma 8.8” rear locker. Should be very similar in size to the new front.

 

[Jetboy]

Things really get interesting when we look at the part time A.D.D 4x4 engagement on the new Tundra. The same mechanism that locks the LC/GX diff also locks, in a slightly different form, the cv axle to side gear for the A.D.D. I’ll place my bet on Toyota messing around with the design enough so that converting it to a locker won’t be easy, or done with off the shelf parts… but we’re pretty crafty around here.

Here’s disassembled 3rd gen Tacoma 8.8” rear locker. Should be very similar in size to the new front.
View attachment 3425106

Thank you for sharing this!

Makes a lot of sense to integrate the ADD system into the differential with a similar electromagnet dog clutch vs the sliding collar and shift fork/solenoid assembly. Removes a bunch of parts and eliminates lots of failure points. Should improve long term reliability I think. Only downside I see is that it's not engageable in the field if there's a failure like the older design.

Do you happen to know how Toyota addressed the needle bearing situation? If they put another needle bearing in this one again - someone needs a public flogging.

 

[bjowett]

The inclusion of the needle bearing in the new diff is an unknown at this time. However, the stub axle is obviously faaaar longer than the old design, which will add much needed bearing area and support… should prevent the vibration.

 

[jay3253]

Sorry for bringing this back to life but does anyone know any more about this? The new Tacoma have much beefier half shafts and lower control arms. Is this still going to be a thing?