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Old 06-26-2014, 09:09 PM   #1
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Shifting 4H to 4L

First jeep, bought last weekend. 97 TJ, and finally got it off the road.

Shifted from 2H to 4H fine, but had problems with 4L. ( was going slow).

Finally got it in there, but seemed hard to get it out of 4L.

Feel like I'm doing something wrong. Any technique tips?

Thanks!

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Old 06-26-2014, 09:15 PM   #2
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The manual states to put the vehicle in neutral and roll at 1-3 MPH then shift. You can also do it at a standstill but it can be a bit persnickety about going into gear. 2HI to 4HI is a on the fly shit and can be done in gear with the Jeep moving. Hope this helps..

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Old 06-26-2014, 09:19 PM   #3
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The slower you can drive without actually being stopped, as in dead-slow .1 mph, the easier it is to shift into 4Lo. 4Lo is not synchronized so it takes a little practice to get the hang of it. 18 years of driving Wranglers and I'll still grind it once once in a while. I find it easiest at that dead-slow crawl going in or out of 4Lo, you may too. And welcome to the forum!
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Old 06-26-2014, 09:27 PM   #4
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Crap. I missed the part about rolling 2-3 miles per hour...in neutral. I guess you don't want to get stuck before deciding on 4L!

Having two neutrals is confusing, too! Ha! Newbie.

Thank you.
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Old 06-26-2014, 09:41 PM   #5
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No worries, its OK to shift to 4LO from a complete standstill. You might just have to pump the clutch a couple of times to get it to engage fully. I was referring to the transmission neutral btw.

I also find that using 4lo in 2nd gear is very practical on the trails. 4lo 1st is very twitchy and slow... especially with a 6 speed and 3.73's!
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Old 06-26-2014, 11:34 PM   #6
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pump the clutch or roll a little!
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Old 06-27-2014, 08:55 AM   #7
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What if it's an auto trans?
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Old 06-27-2014, 11:17 PM   #8
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Quote:
Originally Posted by Lakemam View Post
What if it's an auto trans?
Yep, should have said I have an automatic, too.
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Old 06-28-2014, 05:43 AM   #9
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With an auto, the regular shifter has to be in Neutral before attempting to change into 4L
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Old 06-28-2014, 08:15 AM   #10
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Basically you are trying to

Mesh to spinning pieces with no syncro where one is tied solidly to rear wheel rpm and the other is tied solidly to tranny output shaft rpm coupled with the fact that if you were in 2 hi you now need the tranny out put one to rotate 2.72 times faster then it was in 2H

Now if everything is at a dead stop well 2.72 times zero is still zero but if the teeth don't line up with the slots a little rotation is needed to nudge them into alignment so a slight movement of one or the other is helpful
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Old 06-28-2014, 08:34 AM   #11
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Quote:
Originally Posted by Wesboy View Post
With an auto, the regular shifter has to be in Neutral before attempting to change into 4L
My automatic is rarely in Neutral when I am shifting into or out of 4Lo, I am usually just barely rolling and in Drive or Lo when I shift in/out of 4Lo. As I recall, I rarely have luck shifting into 4Lo when in Neutral and sitting still.
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Old 06-28-2014, 10:03 AM   #12
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Quote:
Originally Posted by Wesboy View Post
With an auto, the regular shifter has to be in Neutral before attempting to change into 4L
Quote:
Originally Posted by Jerry Bransford View Post
My automatic is rarely in Neutral when I am shifting into or out of 4Lo, I am usually just barely rolling and in Drive or Lo when I shift in/out of 4Lo. As I recall, I rarely have luck shifting into 4Lo when in Neutral and sitting still.
I've always moved the regular shifter to Neutral because that is what is recommended in the Operating Information book - but as you say, always just barely rolling.
I'll definitely try it in gear next time I am out

Just looking at the Operating Information book again it states (and this could help the OP)...

Shift the transfer case lever firmly to the desired position. Do not pause in the transfer case N (Neutral).
Pausing in transfer case N (Neutral) in vehicles equipped with an automatic transmission may require shutting the engine OFF to avoid gear clash while completing the shift. If difficulty occurs, shift the automatic transmission to N (Neutral), hold foot on brake, and turn the engine OFF. Make shift to desired mode.

(Bold text is as per Operating Information booklet).

This is news to me and I haven't tried it in the real world but if you are having difficulty, perhaps the answers lies here.
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Old 06-28-2014, 10:22 AM   #13
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Basically as with an auto the tranny is never fully disconnected from the engine always a little parasitic drag in tranny and real drag in converter fluid coupling so if you put transfer case in neutral the tranny out put is free to spin and thus the input side of the tc is spinning making the 4lo mesh problematic at best

Stopped with tc in 4 high the tranny output is also stopped making mesh on tc to 4l easy with just a little roll to insure alignment
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Old 06-28-2014, 04:18 PM   #14
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Thank you all. Will give it another try tomorrow and let you know how it goes!

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