Limited slip differential

bdavid said:

Looks like a standard open diff to me..

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JKbrick said:

Changed the fluid in my sons TJ yesterday and have a question. The build sheet for his serial number said "trac lock differential rear axle". With both tires off the ground both wheels turned the same direction but the rear end pictured
View attachment 113754
Seems to look like the front end to me.
View attachment 113755
Anyone know if the rear looks like a limited slip? I went ahead and put 4oz of additive in there just in case

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David1tontj said:

Limited slips do look like open sometimes. The clutch packs are behind the side spider gears. I thought there would be a center spring though that pushes the side gears away from each other (kinda like a big "s" looking thing.)

In my opinion-the picture you have cannot say it isn't a posi.

If when one wheel is up, it still gets power to the other, then I'm sure it is a posi.

Have you tried jacking both wheels up, and leaving it in gear(or park). An open diff would spin the other wheel in the opposite direction when turning one of the wheels. A posi might still do this, but there would be resistance.

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MarkW13 said:

If the top pic is the rear i'd say you have a trac lock. The parts diagrams i saw has View attachment 113757 a more tubular carrier with the plates on the opposite side of the ring gear. The second picture with the tapered carrier is consistent with pictures of open carriers.

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JKbrick said:

Both rear wheels spun the same direction but I don't remember if it was in or out of gear. That is what I remember doing in my younger years to see if it was open but now I don't know

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