Transfer Case Slip Under Deceleration

[DiscoTech]

I searched, but could not find what I was looking for. I recently changed the front output housing on my '02 D2 in order to have a locking case. Recently, it has started to have a harsh clunk under deceleration, almost like the case is slipping into, or attempting to slip into neutral. I'm assuming the linkage for the shifter needs to be adjusted, but what else should I look for while I am digging around?

Mike

 

[p m]

One more misleading thread title...

LT230 doesn't slip. If the range selector is not all the way in, it could get out of gear and into neutral - but if that happens, you aren't going anywhere. It can't "slip" into neutral and back.

I'd change the transmission fluid (in transmission, not in transfer case).

 

[jafir]

I'd look for broken engine mounts, transmission mounts, bad u-joints, etc.

 

[ERover82]

Check those u-joints.

 

[DiscoTech]

One more misleading thread title...

LT230 doesn't slip. If the range selector is not all the way in, it could get out of gear and into neutral - but if that happens, you aren't going anywhere. It can't "slip" into neutral and back.

I'd change the transmission fluid (in transmission, not in transfer case).

Well, whatever you want to call it, slipping out of high gear into nuetral is exactly what is doing at speeds above 35 mph when decelerating. I even drove it around with the entire cemter console and everything else removed and watched it. One thing was weird, it kicked out of gear and the truck died; the battery and oil lights came on. I adjusted all the linkage today, but that has not helped. All of the u-joints and mounts seem fine; nothing wrong visually at least. I'll change the transmission fluid as soon as I get a chance to.

Mike

 

[p m]

Well, whatever you want to call it, slipping out of high gear into neutral is exactly what it feels like it is doing at speeds above 35 mph when decelerating.

Edited this for you.
How did you check your U-joints? Unfortunately, it is hard to verify their condition with the driveshafts in the vehicle.

The comment you made about "kicking out of gear and the truck died" makes me think more about the transmission (or its controller - don't know if there is one in a 02 D2).

 

[DiscoTech]

There was need to edit it, it was correct the first time. I watched the transfer case kick out of high and into neutral while I was driving. Now, the transfer case may not be at fault, it may be something else, but unless I hold the transfer case shift knob back it will kick into neutral while decelerating.

Inspecting u joints for obvious damage and play is not that difficult to do with the shafts on the truck.

 

[lrover94]

I would go with Jafir on this one.

 

[Roverdoc]

Used front output case? If the lt230 has been driven in the locked position in 4w Hi for a long distance and or freeway speeds you can mess up the engagement and it will have a tendency to drop out of gear with decelerating. I have experienced this after having to drive a long distance on the freeway in limp mode for a broken driveshaft. The fix was to jam the shifter back into unlocked hi position and go back to normal driving. After a few weeks i was able to remove the wedge and all is good again. Without knowing the history of the part you swapped in this may be the issue.

 

[ezzzzzzz]

I'm betting the linkage is not adjusted correctly. If not then the detent (item 26 in attached PDF) is possibly damaged. The detent is located to the passenger side of the main case near the neutral warning switch.

 

[DiscoTech]

I'm betting the linkage is not adjusted correctly. If not then the detent (item 26 in attached PDF) is possibly damaged. The detent is located to the passenger side of the main case near the neutral warning switch.

I'll have to keep playing with tbe linkage, but you may be right about the detent. It will grab, but is super easy to knock out of high range. I didn't even realize that detent existed.

Thanks.

 

[p m]

but unless I hold the transfer case shift knob back it will kick into neutral while decelerating.

Making Jules' face - "That's all you had to say"
U-joints likely have nothing to do with it. Either linkage, or mounts, or what Roverdoc said.

 

[DiscoTech]

Making Jules' face - "That's all you had to say"
U-joints likely have nothing to do with it. Either linkage, or mounts, or what Roverdoc said.

Shit man, it's a Rover, it could literally be anything. Lol

 

[squirt]

I'm betting the linkage is not adjusted correctly. If not then the detent (item 26 in attached PDF) is possibly damaged. The detent is located to the passenger side of the main case near the neutral warning switch.

I think this is on the right track. It's also possible that you forgot to reinstall the detent ball/spring in the right order (meaning it's stuck behind the shaft instead of riding on it), or that they're missing/damaged.

What TC shifter are you using? The original non-locking one?

 

[the deputy]

Yes, it sounds like it is not fully engaging in high. You should feel a positive lock feeling when it is fully engaged. You should also feel the same type of sensation when moving shifter into low, too.

My 01 was popping out of high recently, but the pin/clevest was rusted up...and caused it to bind enough that it wouldn't fully engage...and would pop out when decelerating.

Brian.

 

[DiscoTech]

I think this is on the right track. It's also possible that you forgot to reinstall the detent ball/spring in the right order (meaning it's stuck behind the shaft instead of riding on it), or that they're missing/damaged.

What TC shifter are you using? The original non-locking one?

I didn't even know about the detent until today, so there is a very real possibility that it is not seated correctly. I'm using D1 shifter and linkage.

 

[DiscoTech]

Yes, it sounds like it is not fully engaging in high. You should feel a positive lock feeling when it is fully engaged. You should also feel the same type of sensation when moving shifter into low, too.

My 01 was popping out of high recently, but the pin/clevest was rusted up...and caused it to bind enough that it wouldn't fully engage...and would pop out when decelerating.

Brian.

I'll have to do some more adjusting with the linkage.

Thanks!!

 

[the deputy]

Wait a minute...just noticed your Woody Hayes quote. I'm from Michigan...so I'm not sure if we are even suppose to be communicating...I'm pretty sure there's a law on the books here prohibiting it...lol.

 

[ezzzzzzz]

Did you open the sheetmetal hole enough to allow adequate movement of the shifter? Things move quite a bit under accel/decell. I'm now thinking this movement is shifting the transfercase into neutral if things are tight.

 

[DiscoTech]

Wait a minute...just noticed your Woody Hayes quote. I'm from Michigan...so I'm not sure if we are even suppose to be communicating...I'm pretty sure there's a law on the books here prohibiting it...lol.

LMFAO.