Elock diff question
 

Hey guys!!! Kinda new here but have done a lot

Of reading... I see a bunch of
People saying the rear diff only locks it 4x4 mode
Even on the fx... And that only the raptor locks the diff in 2hi.

Heres the thing my 2012 fx4 screw 5.5 3.73 rear, 5.0l does lock at 2hi but it comes off at 50km/h (31mph)... Why is it that mine does go on and others not, just curious defs not complaining :D... Thanks guys

Cheers!

Mine 12 fx4 is the same way

My 13 as well, I think the 2wd thing was for the 2011 model

Same here... 2013

yeah after 2011 they lock in 2 wheel drive.

I believe,and from my understanding, in 2012 they had included that function.

Mine in my 2012 too. But doesnt it engage and disengage up to 20 mph? I think I read that on my display.
Also anyone, whats the point? I noticed it sucks on pavement, sucks on ice, all it does is make the rear end hop, so whats it for?

definatly not for pavement. it will work great in off road situations. mud stuff like that gives you traction to both wheels even if one is off the ground.

Thats weird... I think its great. Maybe you think it sucks because you have traction control on when you are trying to use it. Its not going to work how a locked diff should when that is on. When I am out offroading i turn advancetrac off and then put the rear diff lock on when needed in 2wd. Works awesome. Then, if needed, put it to 4wd.

Its great for offroad! when not in 4x4. Also straight line launches i think it helps a lil bit?

You guys should definitely be careful with locking the rear during some of the conditions your driving in. Don't lock it on dry pavement, let alone try to turn on the pavement. Watch it on ice, keep your foot out of the throttle. Snow is hit or miss. Mud is usually a good place to use it, but again sometimes a locked rear can get you stuck even worse if your on a muddy hill and get pulled down into something like a ditch. With both tires turning the same speed your vehicle may push or pull into the direction where traction is available.

The locker is great for flexed vehicles and uneven terrain where a wheel lifts from the ground. I am glad that we have an option to lock the rear or run it open, you just have to determine if a given situation warrants locking the rear.

Well put. Some of these guys are gonna blow out their locker real quick using it like that.

You work at the dif factory, So i have a question; When IS the right time to lock the diff?

Any situation when your off roading and one of the rear tires are in the air, if your doin any rock crawling. Any technical off roading situation when you need optimum traction. But you should never use it on pavement or dry unforgiving road surfaces. But I'm sure there's somebody way smarter than me that could help you even more.

I have the 3.73 E locker. Iv only used it in serious off roading conditions when the rear is fully flexed out and one of the tires are in the air. Or when I brag to my chevy owning friends that I can lock it when I want to, not when the truck wants to, But that's just sitting in the driveway in park, I just like to hear the electronic *clunk* when I pull the button out

Thanks for the good info, yeah I've kept mine off for fear of breaking and I'm on pavement 95% of the time anyway.

I ve done severa 2wd launch's with the locker. No issues there. I wouldnt recommend turning a bunch on dry pavement locked, but going straight down the road wont hurt one single thing.

The main problem with the locker on dry hard surfaces is turning. You will damage your differential if you drove this on the street and did turns with it. I wanted this option for off roading as well as getting myself out of a bad situation like deep snow where I need that type of traction.

Also, FWIW, my 2013 XLT can lock in 2wd and unlocks automatically at 25MPH.


Simple rules:

1. use it on dirt, mud, sand or heavy deep snow
2. NEVER use it on pavement or concrete surfaces wet or dry!

Anyone having the issue of using it then turning it off and it still being engaged?

.

Your not going to damage the locker. You will wear your tires. That locker is much stronger than the traction of the tire.

This is completely false! Yes you will wear the tires but eventually things i
Are gonna give in the diff or axles! It's not just the locker but the splines on the axles, the teeth in the pinions, there are lots of things that will give by running a locker dry.

2011 the e-locker came available standard, us 2009-2010 guys don't have it, was only available on the raptor in 2010.. but someone figured out if you put a raptor tccm and the raptor 4wd nob you accomplish locking the diff in 2h for the 2009-2010 guys.
https://www.f150forum.com/f38/e-lock...ide-mod-83937/

Okay i will back up a little on my comment. i would not recommend driving around every day with the locker locked up as a normal on dry pavement. It would wear out parts... Agreed. Although my opinion is that it would take a very long time and a lot of miles to do so.

But if you have it locked and end up in a parking lot and are turning around or anything else your not going to hurt a damn thing being on dry pavement.

I've seen numerous people blow out parts on their rigs on the trail which is usually in a situation where traction was greater, ie rock crawling. This same concept applies to the street, rubber against dry road creates a ton of friction which will show you the weak link.

Is it going to hurt anything if done on accident hopefully not but it could happen the first time you do it.

A customer of mine grenaded his transfer case from the wheel-hop when his e-locker was engaged. FOMOCO replaced it under warranty, but it goes to show that there are some serious forces at work back there.

The advantage that the e-locker has over a factory LS is that there are no clutches to wear out, and since it kicks out at 25mph it won't get the rear end loose on ice like the LS.

About the only disadvantage is that you have to engage it.

I understand **** could break but I don't think turning on pavement is going to break anything... When it happens you hear the inner tire scraping... That to me tells me that that is where the force is being released. I know it's not the best thing for it but do I think it's going to break my diff? No

Maybe not that one time but it can, and is it going to be your diff? Nope probably not, more like your axle at the splines. I've been around lockers and offloading enough to know it happens, sure the tire chirp and hop is there but that is just sending shock waves of stress throughout the driveline.

Bottom line is I don't care really, it's not my truck. I know how and when to use 4wd and lockers. This is a reason I will never buy a used 4wd, you never really know what the person before you did with it.