bullcrew

OK the truetracs got me through ALOT of places that open diffs wouldnt deam of yesterday including 1.5' of silt on rutted hill climbs and off camber stuff. This pic is with the back of the 4runner sitting flat on the ground and the wheel dropped out trying to get a bite! Notice the front not spinning!!! I did figure out the break thing, had to crank the wheel to the left as the drvr side front was airborn and pressed the break while accelerating and thats the only reason it mobbed out!!! So I am pleased as to the workings of them, lifted tires suck but the break press does help.
I am tearing down the ADD system right now to find the reason for the loud snap and loss of 4x4.


Stuck and heres where it broke!


PROBLEM FOUND! Stub Axle

96redtoy

man that is some real powdery looking sand

good luck finding the problem

sloth!

how do you like those tires? have youhad them thru the snow yet?

abecedarian

looking at that sand.... any chance that you've lost one of the vac lines to the ADD?

slosurfer

That's what I asked him in one of his other threads on the same issue. I just removed my ADD system (actually the whole diff, but got rid of everything else) and I was surprised how much there was to it.

Can't tell in the pics, but are you missing your front skidplate? If so, I'd definately be checking all those vaccuum lines, don't forget the hard lines on the front of the diff.

bullcrew

Problem found and pic above!

Now looking to buy a stub axle! Anyone!!!!!!

bullcrew

They are similair tread to their cousins the cooper stt (made in the same place by cooper). I had these siped and I can vouge that they ROCK in snow and ice when siped. They are amazing in the white stuff.

slosurfer

Yep! That would do it. Congrats on finding it, bummer on the breakage. How hard were you on the throttle when you applied the brake to get it to lock up?

bullcrew

I was high centered and didnt realize it was spinning when I slapped the breaks and accelerated! OOOOPS!

Matt16

Thanks for updating us on the Truetrac performance. Someday I want one for snow.

bullcrew

OK got my parts today, had to swap shocks on a guys parts runner to his runner. In return I got the whole front axle diff asembley, both half shafts and rotors. Ill swpa the stuff over tomorrow and get it back up to par! Worked out pretty well thanks to craigslist and peeps parting vehicles!

bullcrew

As far as getting unstuck if it hadntn for the front TT I would have been stuck with the back laying flat on the wall of the wash. It was to the back tires and laying completely on it like it was as shelf. The fronts with the brakes on and turned are what pulled me off it!
I can see a place for lockers without a ?, its just nice to know the TT's were not a waste of money!

tc

Except that a TT still lets the wheel off the ground spin up to 2x and then breaks stuff when it hooks up ...

Matt16

I don't think it it would be any different from open in that situation. Brake torquing is tough on the drivetrain, but with my 31"s I don't think it will be an issue.

I want a Truetrac as I go through lots of deep snow on fishing trips in the fall/ winter/ spring where I can't just take another line. With rocky/ uneven stuff, I can usually pick another line and make it through open front (rear's already locked). Now with the ability to alter tire pressure to the conditions, it does much better over rocks than before.

bullcrew

Probably right as to what snapped the stub, I should stop the wheels completely before brakiing and accelerating.
I'm debating lockers front and rear now, I realized that I like plowing over the stuff more than just loose stuff

tc

No, it's not - it's exactly the same as open - that's my point. I doubt this breakage would have happened with a true locker.

Actually, come to think of it, it may be WORSE than open due to the bias ratio, which acts as a torque multiplier in this instance.

abecedarian

sorry, have to ask...
why would someone drive with their wheels in the ruts?
judging by the pic there is room to shift to the right in order to avoid getting stuck:

bullcrew

Because I thought I could make it!
The guy in a t100 behind me made it but he also had 14" wide tires!!!!
Just moved up here from railroad canyon rd in Elsinore!!! Trying to get the wife to move back ASAP as I hate Idaho!!!!!

Matt16

Your wife doesn't look so happy about the line you took.