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Jeep Wrangler YJ
YJ General Discussion
My 93 Restoration Project
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<blockquote data-quote="machoheadgames" data-source="post: 427559" data-attributes="member: 18789"><p>No it wouldn't have damaged anything at all. Essentially all I'm saying, is that if the light is on, then the fork is slid over, locking the two piece axle into a one piece axle. Essentially you are basically set up like a TJ when that collar is slid over locking the axle shafts together. One easy way to tell would be let the jeep idle down the road, hop out, and peak underneath and see if the front driveshaft is spinning. If it is, then the front axle shaft is locked. When the vacuum system works properly, the front driveshaft will not spin in 2WD. The 4X4 light also will not be lit up of course. That light runs directly off of the front axle disconnect (CAD - Central Axle Disconnect) so if the light is on, then the fork is slid over, engaging the axle shaft. meaning the vacuum system is not operating the fork properly. But definitely no worries about damage. You can get back to messing with it any time with no worries.</p><p></p><p>The CAD is the name of that setup in the front axle. The TJ axle swap eliminates the cad by getting rid of both passenger axle shafts, putting a seal at the passenger side of the diff, and then using cover plate (block off plate) to seal the CAD box on the axle tube. The posi basically takes the responsibility of the vacuum system and puts that responsibility on you by you operating the fork with a cable. Not the worst solution, but I've never seen much reason to go that route. There is another route called the perma lock or something like that. It is basically a hybrid between posi-lock and the TJ shaft. It permanently slides the fork over and locks it in place. Then you rework the electrical so the light only works in 4WD. It's similar to the TJ shaft in that you permanently have a ready-to-go axle shaft, my issue with it is it's weaker than a TJ shaft with the collar setup, and IMO the proper way to go is to just do the TJ shaft and get rid of all the mess in the axle. But it is a solution.</p><p></p><p>It will be fine on the trail as it is currently, you have full functionality while your fork is stuck in the locked position.</p><p></p><p>Yes, I did the TJ swap last year. TJ shafts, Napa 11800 seal for passenger side of diff, TJ 4x4 switch mounted to the transfer case, took the wiring from the axle and rerouted and extended it to the new switch on the transfer case. Light comes on instantly in 4LO and 4HI. Works perfectly.</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 427559, member: 18789"] No it wouldn't have damaged anything at all. Essentially all I'm saying, is that if the light is on, then the fork is slid over, locking the two piece axle into a one piece axle. Essentially you are basically set up like a TJ when that collar is slid over locking the axle shafts together. One easy way to tell would be let the jeep idle down the road, hop out, and peak underneath and see if the front driveshaft is spinning. If it is, then the front axle shaft is locked. When the vacuum system works properly, the front driveshaft will not spin in 2WD. The 4X4 light also will not be lit up of course. That light runs directly off of the front axle disconnect (CAD - Central Axle Disconnect) so if the light is on, then the fork is slid over, engaging the axle shaft. meaning the vacuum system is not operating the fork properly. But definitely no worries about damage. You can get back to messing with it any time with no worries. The CAD is the name of that setup in the front axle. The TJ axle swap eliminates the cad by getting rid of both passenger axle shafts, putting a seal at the passenger side of the diff, and then using cover plate (block off plate) to seal the CAD box on the axle tube. The posi basically takes the responsibility of the vacuum system and puts that responsibility on you by you operating the fork with a cable. Not the worst solution, but I've never seen much reason to go that route. There is another route called the perma lock or something like that. It is basically a hybrid between posi-lock and the TJ shaft. It permanently slides the fork over and locks it in place. Then you rework the electrical so the light only works in 4WD. It's similar to the TJ shaft in that you permanently have a ready-to-go axle shaft, my issue with it is it's weaker than a TJ shaft with the collar setup, and IMO the proper way to go is to just do the TJ shaft and get rid of all the mess in the axle. But it is a solution. It will be fine on the trail as it is currently, you have full functionality while your fork is stuck in the locked position. Yes, I did the TJ swap last year. TJ shafts, Napa 11800 seal for passenger side of diff, TJ 4x4 switch mounted to the transfer case, took the wiring from the axle and rerouted and extended it to the new switch on the transfer case. Light comes on instantly in 4LO and 4HI. Works perfectly. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
My 93 Restoration Project
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