Originally Posted by screech1
what is that?? i was told they did something as far as a posi...
I did it to my cherokee, all you do is take the shift fork assembly off of the axle. remove one of the C clips off of the shaft inside of it, move the fork over to the locked position, and re-install the C clip in the same spot on the shaft. It will now be on the opposite side of the shift fork, holding it in the locked position. Next step is to slide the collar on the 2 piece front axle into the locked position. which is at the point in which the two axle halves meet. Basically it is like driving around with your hubs always in, but much less abrasive on your hardware. You are still fully able to drive in 2wd, but your 4wd is only a lever pull away. Much more reliable that vacuum 4x4. The thing is! like I said. I am not sure if this is the case with the YJ wrangler. Hope this helps!
Here is some more good info, and pictures regarding the vacuum bypass mod.
Free D30 CAD Bypass (-91) - Jeep Cherokee Forum