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Old 05-15-2012, 11:04 AM   #1
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Unhappy Had an aw crap moment this past weekend!

So I go to the coast to spend the weekend with my mom for Mothers Day and while we have my YJ on my dads lift to adjust the brakes we notice the cause of my clunking that I have been having, my exhaust is bumping against the front drive shaft. Seems that since I removed the trac bars and sway bar things have shifted a little.

No problem, we get out his torch and put a jack on the pipe to put a little tension on it so we can heat it and bend it. So we slowly and carefully (or so we thought) heat the pipe and then we smell something burning! Seems that all of the vacume lines from the transfer case got hot enough to light off, crap, where's the fire extinguisher??? We get the fire out but now I have no 4WD! Double CRAP!

OK, now I have to bypass that cluster of junk and get the Posi Lock system, oh well crap happens huh. BTW we did correct the problem regarding the exhaust!

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Old 05-15-2012, 11:31 AM   #2
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LOL! Sounds just like something that would happen to me. You will like the Posi-Lok I believe. I do. AND you know how to wire the dashboard light to work! Have a great day!

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Old 05-15-2012, 11:40 AM   #3
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LOL! Sounds just like something that would happen to me. You will like the Posi-Lok I believe. I do. AND you know how to wire the dashboard light to work! Have a great day!
I know I will like it, thanks. I read your other post, glad your all set! I am supposed to get it Friday and should have it done Saturday!

Have a good one yourself!
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Old 05-21-2012, 11:11 AM   #4
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Thumbs up I got the Posi Lock system installed!

I got the package Friday when I got home from work and installed the system Saturday, man that was easy! The only problem I had was when drilling the hole in the firewall the drill bit stuck and I busted open my knuckle on the clutch pedal assy! Man that thing was sharp.

Now I don't have to worry about vacume lines any longer! Woo hoo. And of course the 4WD light now works just like it should.
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Old 05-21-2012, 12:06 PM   #5
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Ifi may ask, What exactly does the Posi lock system do?
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Old 05-21-2012, 12:23 PM   #6
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It is manual locking system for the front axles and replaces the vacum actuated system that engages the four wheel drive. The vacum system tends to be problematic.
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Old 05-21-2012, 12:33 PM   #7
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What he said!
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Old 05-21-2012, 02:19 PM   #8
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Does it work the same as putting it in 4WD as it does with vacuum tubing? or do i like have to get out turn it?
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Old 05-21-2012, 02:24 PM   #9
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It is a cable system that replaces the vacum motor that pulls th3 fork that engages the axle. You just have to pull the cable. You can mount wherever you want to even outside the jeep if you really wanted but most people install on/under the dash. It also lets you take the front wheels out of four wheel when making tight turns and give you the option of 2 wheel low. It is around $200 usually and since teh vacum motor can cost over $100 at some places it is a very popular and easily done modification.
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Old 05-21-2012, 02:40 PM   #10
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Thats pretty cool
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Old 05-21-2012, 02:45 PM   #11
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Thumbs up Here is what I know

I paid $159.99 for the kit and like cozeinlb said it is a cable operated system as opposed to a vacume operated system like you have today.

So what you do is this:
Push the center of the cable to unlock the cable and pull it out and release the lock button, now you have locked the front axle.
Then you put the transfer case into either 4WH or 4WL depending on your needs.

And when your done:
Put the transfer case back into 2WD.
Press the center button on the cable and push it in and release the lock button and now you have unlocked the front axle.

Hope this helps!
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Old 05-22-2012, 10:39 AM   #12
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Congrats, jeff! Glad you got it going.
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Old 05-22-2012, 11:19 AM   #13
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Congrats, jeff! Glad you got it going.
Thanks man! Glad you have yours working as well!
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Old 05-22-2012, 08:33 PM   #14
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Where did you order you cable system from and was it a compleate system. I would like to get it for mine.thanks
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Old 05-22-2012, 08:42 PM   #15
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Old 05-23-2012, 10:50 AM   #16
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Thumbs up Here you go

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Where did you order you cable system from and was it a compleate system. I would like to get it for mine.thanks
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OK guys, I got it from Quadratec and here is the link:

Posi-Lok PSL900 - 4x4 Posi-Lok for 84-95 Jeep® Wrangler YJ, Cherokee XJ & Comanche MJ - Quadratec

There are 2 options available, one for 0-2.5" lift and the other is for a 3" lift and up. I went with the 3" and up even though I don't have a lift on mine YET as that is something in the works for me. And yes, it is a complete kit with everything you need including the wiring to turn on the 4WD light.
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Old 05-23-2012, 01:34 PM   #17
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Thanks jeff for the information.
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Old 05-23-2012, 05:13 PM   #18
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How compatible is this with a locker and atlas II transfer case? These are two upgrades in my future plans list. My system is working fine but I have thought about the posi loc so I could drive in 2 low on back roads. It would give me the slower speed with better steering.
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Old 05-23-2012, 06:26 PM   #19
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How compatible is this with a locker and atlas II transfer case? These are two upgrades in my future plans list. My system is working fine but I have thought about the posi loc so I could drive in 2 low on back roads. It would give me the slower speed with better steering.
OK, just to be clear I am no expert when it comes to Jeeps, I have only owned mine for 2 months after all!

That being said, if you still have the vacume system AND the 2 piece passenger side axle this will still work for you as the stock system and the Posi Lock system do the exact same thing, move the shift fork that moves the collar that locks the 2 piece axle together.

This system does not touch anything else in the Jeep so it would not matter which transfer case you run. Okie Dokie.
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Old 05-24-2012, 01:56 AM   #20
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Yeah I was hoping someone else might answer. I have been looking at the Posi lock but didn't know if anyone had any issues when combined with the Atlas and a locker. You shouldn't it is simply replacing the factory vacuum system with a manual one.

With the atlas you can choose to run just the front or just the rear so I wouldn't need it for 2L after the Atlas. But that is a ways down the road.

This would give me my 2L until I can afford the upgrade. If anyone knows of any issues let me know.

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