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Old 11-21-2015, 11:12 PM
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Transfer Case Problem

Recently my transfer case has been having trouble disengaging from 4hi to 2hi. After I shift it back into 2hi, it won't disengage immediately. I can drive for an honest 2-5 minutes and eventually it will disengage, but it's doing it with a very noticeable clunk. The clunk is strong enough that I both feel and hear it.

Has anyone else had this problem? I'm at about 44k miles on my 2013 JKU Sahara and it just started doing this about a week ago. Now that winter's here, I can be in and out of 4hi 10-20 times a day. I use it mainly to start at slippery intersections then put it back into 2hi once moving.

I've not talked to the dealer yet, but probably will this coming week.

Mike

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Old 11-21-2015, 11:23 PM   #2
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You might be binding up you drivetrain with turns offroad. Before you go to disengage from 4 to 2 drive backwards a few feet to "unwrap" the strain on the drivetrain. You can feel the bind come undone holding on to the shifter, it will slip easier into 2...

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Old 11-21-2015, 11:26 PM   #3
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The shift is not directly connected to the lever. Moving the lever preloads the shift mechanism and the shift completes as soon as it overcomes the bind in the driveline.

BUT it could be there is a problem, resistance in the preload mech and it is also waiting to overcome that resistance.

What is the temperature up there in Alaska? Could be cold, stiff oil?
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Old 11-21-2015, 11:28 PM
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I don't think it's simple binding. I've been using the same winter on road driving technique for three years and this is the first that it's done it.


Also, I've tried it several times going straight on snow and ice covered roads where it wouldn't have enough traction to bind up and it still does it. My Iroks are a great off road tire, but their traction on the street leaves a lot to be desired.

Mike
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Old 11-21-2015, 11:31 PM
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Quote:
Originally Posted by billiebob View Post
The shift is not directly connected to the lever. Moving the lever preloads the shift mechanism and the shift completes as soon as it overcomes the bind in the driveline.

BUT it could be there is a problem, resistance in the preload mech and it is also waiting to overcome that resistance.

What is the temperature up there in Alaska? Could be cold, stiff oil?
It's a 2013 with 44k miles on it and I'm entering the third winter owning it. We've seen temps down to -10F so far this year, but it was back over 36F today and it was still doing it, so I don't think it's temperature dependent.

I also haven't changed out the fluid in my transfer case yet. It's on the list for the coming holiday weekend. Not sure if that would matter or not. I know the recommended service interval is 30k miles, but I also know plenty of cases never get their fluid changed.

Mike
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