What diff do I have?

LostRenegade · **Posted:** Sat Jul 30, 2005 7:49 pm

I am thinking about getting a Powertrax no slip, but I am not sure if I have an open or LSD diff. The green band on the driver side of the axel says 8.25 KJ and 3.73 OPEN-CASE. This leads me to believe that I have an open diff. Now when on a dirt road and I punch the gas, I leave two tire tracks behind. This leads me to think that I have an LSD. So I am not sure.

My Lib is a 2003 Libertry Renegade. How can I correctly determine which diff I have so I know which powertrax no-slip to get?

lilmatty · **Posted:** Sat Jul 30, 2005 8:05 pm

I would have thought a Rennie would be LSD. One sure fire way to find out is to get both rear wheels off the ground. Spin one wheel and if the other one spins in the same direction you have an LSD. If it spins in the opposite direction it is open.

Its definitely an 8.25 though.

hoss75 · **Posted:** Sat Jul 30, 2005 8:07 pm

FWIW my '05 Renny was an open diff. so that's not a reliable indication.

lilmatty · **Posted:** Sat Jul 30, 2005 8:13 pm

Get out the floor jack then... :lol:

LostRenegade · **Posted:** Mon Aug 01, 2005 9:08 pm

What's the best way to keep it from rolling? In order to jack up the rear end and turn the wheels, the trans needs to be in neutral.

AdamIsAdam · **Posted:** Mon Aug 01, 2005 9:12 pm

Before you get the jack out, just look under it. My axle has a label still on it. I think it's on the driver's side, that says what it is.

Or, get a floor jack and put it under the diff to get the tires off the ground an inch or so. It won't tip. Block the front tires.

Don't you have your original window sticker? that will say.

Oh, and Renegade's didn't come with it automatically. It's an option like all others. Dumb, but it is.

lilmatty · **Posted:** Mon Aug 01, 2005 9:14 pm

He's got an 03 so I wouldn't trust what any of the tags on the diff says.

AdamIsAdam · **Posted:** Mon Aug 01, 2005 9:37 pm

why not?

I have an 03 also.

lilmatty · **Posted:** Mon Aug 01, 2005 9:47 pm

If the cover's been off like for a locker or sometihng tags get lost or mishandled. It just too easy to jack up the back and be sure.

AdamIsAdam · **Posted:** Mon Aug 01, 2005 9:51 pm

I'm not talking about the little metal tag that tells what gears are inside. I'm talking about a green sticker that is just inboard of the LR wheel that says: 8.25, 3.73, TRAK-LOC on it. Mine is still easily visible (just went in the garage and checked) after 41k and plenty of mud.

AdamIsAdam · **Posted:** Mon Aug 01, 2005 9:52 pm

And I didn't even need a jack.

(hell, I don't even have shoes on!)

:lol:

lilmatty · **Posted:** Mon Aug 01, 2005 9:55 pm

whatever

AdamIsAdam · **Posted:** Mon Aug 01, 2005 9:59 pm

Seriously, you don't have this sticker? I'm surprised it lasted, but it's there. Sure takes guess work out of things.

(didn't mean to come across as a wise arse)

lilmatty · **Posted:** Mon Aug 01, 2005 10:04 pm

I guess my sticker was beat off of it long ago. But I knew I had an LSD from the way it handled off road. And besides I ordered it new that way.

LostRenegade · **Posted:** Tue Aug 02, 2005 10:34 pm

I still have the green tag. As mentioned in my original post, it says "OPEN-CASE". When I get a change, I will try the wheel test. I'm not sure if my hydrolic jack will lift the rear of my KJ. If not, I can use my hi-lift and lift one side and brase it up, then lift the other side.

AdamIsAdam · **Posted:** Tue Aug 02, 2005 10:39 pm

well if it says open case, it's open.

Also, if you have a trailer hitch, stick your hi-lift in there to lift rear.

InCommando · **Posted:** Wed Aug 03, 2005 2:44 pm

Even an open rear can spin both rear tires if the load is evenly distributed, and it is on a loose surface. Not often, and not for long, but it can do it. I'll bet if you had turned your wheels right or left, and the rear end moved side-to-side a bit, it would have gone to one wheel (usually the passenger side.)

LostRenegade · **Posted:** Sat Aug 06, 2005 11:37 am

It's an open for sure. When I jacked it up and turned a tire, the other tire either didn't turn or turned slightly in the opposite direction.

Thanks,

DPKJ · **Posted:** Tue Aug 09, 2005 1:13 pm

To check for an open diff. jack up one wheel, put it in nuetral, and the wheel should spin easily. if it doesn't it is limited slip (trak-lok) or locker. The driveshaft will rotate.

CSTEINER · **Joined:** Wed Aug 17, 2005 9:44 am **Posts:** 1

I WORK AT A CHRYSLER JEEP DODGE DEALER AND ALL I WOULD NEED IS THE LAST 9 DIGITS OF YOU VIN TO TELL THE CORRECT DIF

What diff do I have?

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