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Unread 12-06-2014, 09:25 PM   #1
93zjgrand
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1993 ZJ 
 
Join Date: Aug 2010
Location: clover
Posts: 157
transfer case or axle u joints

Only in 4 wheel drive do I have problems.. while driving in muddy wet grass straight or turning I get this pop or chirp noise every few seconds... never in 2wd.. the dana 35 always spins in 2wd right just not engaged and I don't think it's anything on the inside.. could it be the ujoint on the axle or the transfer case... how to check each it you could/can.. the drive shift has no play and feels solid.

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Unread 12-07-2014, 12:36 PM   #2
neonhomer
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1996 ZJ 
 
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What transfer case do you have? I'm assuming the 242. Sounds like maybe the double cardan joint in the front driveshaft might be getting worn. (From what I was told by Tom Woods Custom Driveshafts) If you take the driveshaft off, the double cardan should stay up, not just flop down.

Try changing the fluid in your t-case. Two quarts of Mopar 7176 +4 (ATF +4... DON'T USE DEXRON/MERCON or GEAR OIL!) will do it.

Your u-joints might need lubrication. If you have grease fittings, give them a shot of grease. If not, you might need to pull the shaft and check the caps to see how they rotate.
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Unread 12-07-2014, 12:43 PM   #3
93zjgrand
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1993 ZJ 
 
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I have the np231.. I also have to give it more throttle than normal in 4 wheel... my front drive shade spins all the time.. but don't do it in 4 wheel
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Unread 12-07-2014, 02:40 PM   #4
durango-bob
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I would start by checking the front axle U-joints. After that the front driveshaft joints. Finally it could be the chain in the t-case that has worn and stretched.
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Unread 12-07-2014, 04:01 PM   #5
93zjgrand
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How do you check the ones on the on axle itself.. I looked under the Jeep and the drive shift were it sides in and out and the coupler is a little loose.. but the joints feel solid
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Unread 12-07-2014, 07:19 PM   #6
durango-bob
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Quote:
Originally Posted by 93zjgrand View Post
How do you check the ones on the on axle itself.. I looked under the Jeep and the drive shift were it sides in and out and the coupler is a little loose.. but the joints feel solid
The way I do it is to jack up the front end, turn the steering wheel and then rotate the tires and watch the u-joints. You will see wobbling and binding if they are bad.
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