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Old 03-27-2012, 10:13 AM   #1
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Why does this happen w/ an auto locker?

Today my dad took the jeep to dunkin donuts. He said he was in the parking lot and put the jeep into 4H and drove in a straight line forward, and then a straight line backwards.

He then put it back into 2H and drove into the lot and parked and when he came out and started driving home the wheel would resist him and then cut back the other way real quick. He said when completing a right turn as soon as he let go of the wheel it would forcefully go left. And same the other way.

What happens inside the locker that makes this happen,...even after the 4 wheel drive has been disengaged?

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Old 03-27-2012, 10:23 AM   #2
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You have an auto locker in the front? Maybe he got out of 4WD, the light went out, but the transfer case was sting engaged.

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Old 03-27-2012, 10:39 AM   #3
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The transfer case does not always disengage immediately, sometimes it takes a while. With a locker it could take longer. P.S. Where is this Dunkin Donuts that requires 4wd?
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Old 03-27-2012, 10:46 AM   #4
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Quote:
Originally Posted by 50Johnbob View Post
P.S. Where is this Dunkin Donuts that requires 4wd?
That's what I was wondering.
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Old 03-27-2012, 11:24 AM   #5
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hahaha.

my dad is weird and just likes to experiment with my stuff whenever he gets the chance.

and this is completely normal for the t case to take a couple mins?
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Old 03-27-2012, 12:13 PM   #6
Knows a couple things...

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A tcase won't always immediately return back to 2wd after moving the lever back into 2wd but it will eventually. The more pressure on the gas pedal, the longer it will take to shift back into 2wd. I barely apply any gas after shifting back into 2wd to help it shift back more easily. And it is perfectly normal for a Wrangler to steer as you described when in 4x4 on pavement. The Wrangler's part-time 4x4 system mechanically locks the axles together and is only meant for offroad use.
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Old 03-27-2012, 12:46 PM   #7
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OP didn't say what type of transfer case, but I have never had one "delay" in shifting. If the mode select lever is firmly in a given detent (2H, 4H, N, 4L) then my transfer case has been in that mode. The mode select lever is mechanical--it either is or isn't in a given postion. I have had them "resist" going into a given mode\position but in that case the mode select lever was not firmly in one positon but between two, normally due to torque forces. http://www.detranscatalog.com/wp-con...P231-NP243.pdf
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Old 03-27-2012, 12:53 PM   #8
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While more common on say the CJ models(both my model 20 and dana 300 would do this often when going from 4wd to 2wd) there are some times when the case will hang up in 4wd. Add a locker in and well you get the above.
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Old 03-27-2012, 01:15 PM   #9
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I agree on the lockers--my current air lockers on the Rubi have a mind of their own. All I can do is either turn the compressors on or off--from there the lockers make their own decision Sometimes they are very fast to engage or disengage (based on the dash lights) other times they take forever--if they are slow normally a turn of the wheel and a VERY small amount of forward motion creates differential action and that gets them to move.
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Old 03-27-2012, 02:19 PM   #10
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The mode fork is moved into the 4wd position by the shift cam, but it is a spring that pushes it back to the 2wd position when the shift cam moves out of the way. This is the reason that it can hang in 4wd until the transfer case is "unloaded".
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Old 03-27-2012, 09:40 PM   #11
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I have had "transfer case bind" really bad a few times. If you're at home the easy way is to jack both front wheels off the ground and let it unload.
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Old 03-27-2012, 10:50 PM   #12
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all very helpful and appreciated as always

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