How can you tell if you have a track lock differential??

[Geminiroq]

Hey guys,

I was reading the 1979 Jeep Brochure and I noticed that they said there was a track lock diffential option....errrrr...at least it looks like it might be an option. It does not specify.

Anyways....how can I tell if my chero or any other jeep has this option?

Thank you,

[Mark Wilde]

I think the trak-lok is the same as a posi....jack the rear end so both tires can rotate. Hand-spin one side. If your diff is open (like most stock) the other tire will turn in the opposite direction. If you have posi (trak-lok) the other tire SHOULD turn the same direction.

That's the quick and easy way. The other way is to take off the diff cover and see if there's a clutch pack inside. If so, it will require a special friction additive to the gear oil when you do replace the gear oil. Not as spendy as the "special" QT fluid, but almost!

[Geeeep]

There should be a warning sticker in the glove box and a tag on the differential cover (between two of the bolts). However the above two tests are better who knows if anything was swapped by a PO.

[Chevelleguy]

The only sure way is to pull the cover. The Track-loc is very weak and doesn't last long so if it is original, it surely won't show any resistance, mine in the front won't.

[Dr Teeth]

If you're really lazy like me, pull into a gravel patch and punch the gas. Once the dust clears look behind you to see if you left one trench in the gravel or two!

Todd

[RED-85-Z51]

On my 89, one time it spun 1 tire down my driveway, but today I power brakes a little and floored it and left 2 even lines down a 200 foot driveway...

I spun em down a pebble covered road a couple weeks ago and both spun the same.

In 4WD, wont all 4 tires spin?