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Unread 11-08-2009, 11:15 AM   #1
bdfletch
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YJ front drive spinning/posi-lock/no 4 wheel drive

I just installed posi-lock on the front axle after finding all the vacuum hoses shot. Trying it on the beach only the back wheels spun..no 4 wheel drive as far as I can tell. The front drive shaft was turning just fine though it doesn't turn in 2 wheel drive though maybe that is okay. I'm a newbie. any ideas - thanks in advance.

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Unread 11-08-2009, 12:14 PM   #2
Apollo12227
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The reason your front driveshaft was spinning is because your transfer case is locked in... If you ever want to test engagement of the posi lok you have to engage the posilok with the transfercase NOT locked... With the posi lok locked in and ur transfer case not locked in... Try to turn front driveshaft by hand, on e you can't spin it by hand without the transfercase locked then your differential is positively engaged.

I've already typed a bunch so I'll let the others troubleshoot the actual issue but above is how you know for sure if the front end is locked in.
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Unread 11-08-2009, 02:37 PM   #3
H3RTCH
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X2 check to see if your posi-lock is working by the method he said. Keeping the jeep in 2WD, engage the posi-lock. If you can turn the drive shaft more than just a hair in either direction, it is not engaging.



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Unread 11-08-2009, 04:10 PM   #4
timatoe
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I'd do this......

Pull the cover off the disco. housing and then operate the Posi to make sure it's moving properly.

Put it back on and make sure the fork is over the sliding collar properly, yes it will go on wrong and not move the collar.

After it's all back on adjust accordingly.
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Unread 11-08-2009, 06:10 PM   #5
Machine15825
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I noticed with my posi lock sometimes I have to surge forward for my front axle to engage fully. Try feathering the clutch and "rock" the jeep and see if you can get an extra 1/4 inch of pull. That last quarter inch is where it's all at. That's provided you are confident you installed and adjusted it properly.
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Unread 11-09-2009, 05:01 AM   #6
bdfletch
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I am new here and you people are right on top of everything!! Thank you for the troubleshooting techniques because I tried them and you were right...I hadn't installed the alignment correctly and wasn't engaging. and yes, that last 1/4/ counts!!

THANK YOU!
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Unread 11-09-2009, 08:21 AM   #7
Machine15825
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That's definitely right. Glad I could help. Enjoy!
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Unread 11-09-2009, 10:58 PM   #8
timatoe
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Glad you got it fixed. Don't be a stranger.
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