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Old 01-06-2010, 08:31 AM   #1
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Slipping out of 4WD?

The 4WD on my '98 tends to "slip out", and I'm not sure what would make it do that. I know it's out because it will make a "gear-grinding" sound when I hit the gas pretty good. I then put the lever to 2WD and then put it back in 4WD and it usually stays for a long time. I'm kinda new to this whole 4WD thing, and I'm not sure if this is something that's typical or not, and what can be done to fix/improve this. Any thoughts?
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Old 01-06-2010, 09:24 AM   #2
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If I shift mine into 4-hi pulling straight back, it will engage for a short time and then jump out. When I shift it properly by pulling back to neutral, then over to the right and then back, it never jumps out. Good luck.

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Old 01-06-2010, 09:34 AM   #3
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Quote:
Originally Posted by coolbreeze View Post
If I shift mine into 4-hi pulling straight back, it will engage for a short time and then jump out. When I shift it properly by pulling back to neutral, then over to the right and then back, it never jumps out. Good luck.
That's not "properly"...neutral isn't there for 4hi, it's there for shifting into 4 lo. Won't hurt to do it that way as long as you're not moving...but I think your transfer case linkage is just a hair off, which would explain why it holds shifting into 4hi from one direction as opposed to the other.

That goes for the OP as well...the transfer case linkage needs adjusted. I haven't had to do it with mine, but if you search the forum (use the search...might take years if you read each page) I'm almost positive there's a few people who have explained how to properly adjust it.
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Old 01-06-2010, 12:09 PM   #4
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Mine would pop out of 2 lo under certain conditions. Slight adjustment to the linkage and it hasn't poped out since.
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Old 01-06-2010, 12:14 PM   #5
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it does it on my 98 too. its really annoying! i'll go search the adjustment right now. i was told that the stock linkage has many pivot points and with the amount of lift my tj has i should just go ahead and get the aftermarket linkage replacement. this is it:Teraflex 4947100 - TeraFlex Transfer Case Shifter Linkage Adapter for 97-06 Jeep® Wrangler TJ & Unlimited - Quadratec


i actually meant to post this: http://www.novak-adapt.com/catalog/kit_sk2x.htm
i hope that helps
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Old 01-06-2010, 12:55 PM   #6
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Quote:
Originally Posted by s3nt3nc3d View Post
That's not "properly"...neutral isn't there for 4hi, it's there for shifting into 4 lo. Won't hurt to do it that way as long as you're not moving...but I think your transfer case linkage is just a hair off, which would explain why it holds shifting into 4hi from one direction as opposed to the other.

That goes for the OP as well...the transfer case linkage needs adjusted. I haven't had to do it with mine, but if you search the forum (use the search...might take years if you read each page) I'm almost positive there's a few people who have explained how to properly adjust it.
You are of course correct. Mine doesn't jump out of 4-hi, but 4-lo when I shift it sloppily
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Old 01-06-2010, 01:08 PM   #7
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How do you adjust the linkage on it then? Mine has a habit where if I pull it up to 4Hi, all the way to the bezel it will pop out. I've gotta pull it up then push it slightly back down to where I feel it fully engage.
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Old 01-06-2010, 01:51 PM   #8
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Quote:
Originally Posted by burton160w View Post
How do you adjust the linkage on it then? Mine has a habit where if I pull it up to 4Hi, all the way to the bezel it will pop out. I've gotta pull it up then push it slightly back down to where I feel it fully engage.
Thats exactly what I have to do......


Heres a quote from Jerry Bransford:
"The rod can slip out of adjustment, there is but a single bolt that holds it in place. Get underneath and watch the linkage while a friend shifts it for you so you can figure out how it works. Then use a 1/2" wrench to loosen the bolt that secure's the rod's position you'll have discovered by this time and then slide the rod back in more where it used to be before it slipped out of adjustment.

I normally use a pair of pliers to move the short lever on the transfer case the rod connects to so the t-case is fully into 4Lo. Then I adjust the shift handle's rod length so it can consistently pull the little short lever all the way into 4Lo. Then tighten the crap out of that bolt so it the rod won't slip out again. "


I have a big lift, xfer case drop, and body lift. So I am not sure if simply adjusting it will work but when the temp gets out of negative numbers I'll give it a shot.....
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Old 01-06-2010, 07:40 PM   #9
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Per the service manual: 1. Shift transfer case into 4L position. 2. Loosen lock bolt (mentioned above) on adjusting trunnion. 3. Be sure linkage rod slides freely in trunnion. Clean rod and apply spray lube if necessary. 4. Verify that shift lever is fully engaged in 4L position. 5. Tighten lock bolt.

Getting mine in 4H or 4L was next to impossible. Followed this procedure this morning and all is well.
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Old 01-06-2010, 07:59 PM   #10
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thanks! do you have a body lift or xfer drop or susp lift?
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Old 01-06-2010, 08:29 PM   #11
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I have a body lift, installed by the previous owner. He didn't install the drop bracket supplied with the lift and was never able to put the Jeep in 4L. Omix-Ada sent me a replacement bracket but after I installed it I didn't have 4H either. Bought the Service Manual, followed the adjustment procedure I quoted above and I now have 4H and 4L and shifting is very smooth with no grinding. Drove about 15 miles in the sand today, in and out of 4wd with no problems at all.
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Old 01-06-2010, 11:31 PM   #12
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I followed the same FSM procedure on mine. Took it for a test and it popped out of 4 lo almost immediately. So did the adjustment again. The second time around, I used a bungee cord to my center console to hold the shift lever all the way in 4 lo before doing the adjustment. Came out perfect.
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Old 01-07-2010, 04:13 PM   #13
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This happened to me last week while going 50 - see thread:http://www.wranglerforum.com/f5/loud...ase-42135.html

Fixed the problem yesterday by installing the drop down bracket that came with the body lift. According to the directions, I shouldn't have needed the bracket. The linkage was out of alignment but now it shifts like butter and hopefully won't pop out again. I'll get a pic of the bracket up shortly.

My advise to anyone installing the JKS BL/MML - install the linkage adjustment bracket even if you think you don't need it.
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Old 01-07-2010, 04:58 PM   #14
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Here's the pic showing the new bracket and how it adjusted the linkage angle.
(Not sure if I'm wording that right, but you get what I mean.)
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Old 01-07-2010, 09:23 PM   #15
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this is a dumb q, but what's the difference b/w a drop down bracket that comes in a BL kit, and something like installing a teraflex shift linkage adapter? i think this may resolve my issues?
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Old 01-08-2010, 02:31 PM   #16
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Quote:
Originally Posted by kdukes4 View Post
this is a dumb q, but what's the difference b/w a drop down bracket that comes in a BL kit, and something like installing a teraflex shift linkage adapter? i think this may resolve my issues?
Not a dumb question at all - and I'm not sure. I think either will resolve the misalignment issue. The Teraflex linkage is more of a linkage replacement - I think. Kind of like the difference between a track bar relocation bracket and an adjustable track bar maybe. Someone will correct me if I'm wrong I hope.
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Old 01-08-2010, 03:11 PM   #17
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Basically they are the same thing. Both of them bolt to the tub to move that side of your linkage rod to a more advantageous position. If you wanted to get away from bolting to the tub and make things bullet proof, you would have to move to something that bolts to the transmission only. I'm not at home or I would provide a link to the one I'm thinking of.
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Old 01-08-2010, 03:58 PM   #18
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meant to post this: Novak's NP / NVG Shifter Assembly for Jeeps
i hope that helps
this is the one that does not bolt to the body.
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Old 01-09-2010, 11:44 AM   #19
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The Advanced Adapter is a pretty simple install as well. And cheaper from what i remember.

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