I was looking at my build sheet again, and I think I confused myself a little

So my build sheet has this listed for my axles:

Now from what I know, Jeep's name for their LSD is Trac-Loc or Tru-Loc. I have neither of these listed on my build sheet. Does this mean that what I have is actually the BLD?

Or is the BLD just an electronic thing?

 

Anti-spin differential means Trac-Loc. Tru-Loc refers to the electronic locking differentials, standard on the Rubicon.

All JKs have BLD, which is an electronic control that uses the brakes to shift power from one wheel to another to maximize traction.


My regards,

Widewing

 

X2 on what Widewing said, you have the LSD.

 

Cool, thanks for clearing that up for me guys, I kinda thought it was one or the other, but not both.

I'm still learning new things about my JK all the time

I've certainly never put this much thought into any of my previous vehicles.

 

Just to clarify, you also have the BLD. The LSD is in the rear axle, where as the BLD is brake activated. There are some threads on the BLD worth reading to understand how it works. Here is one:

https://www.jk-forum.com/forums/show...&highlight=bld

 

one more thing, BLD will kill your power due to brakeing the spinning side. You will bog down to gain traction, an lsd used the power from the Jeep to lock up the rear using clutch plates or screw type in the detroit. That will not bog down with the esp off.

 

Thanks, there was some good info there...especially the link to the Chrysler blog

 

Yeah, first time , I hit a big mud hole it bogged to a standstill, then I hit the switch and walked right out.

 

Actually the BLD stays active in 4LO, don't confuse it with the regular traction control which will account for the bogging down (because it cuts engine power). Now BLD will require some additional power in a situation that it's used, but in 4LO it's usually not an issue as the brake force applied is usually minimal.

If wheeling in 4HI though you would definitely want/need to disengage the ESP via the button, especially for mud or snow.

 

The BLD is is actually quite helpful in many situations that allow one wheel to start slipping you will never know it even kicked in.