(Solved)weebels wobble but it don't fall out- Driveshaft *transfer case* mount

Video of finding issue
https://youtube.com/shorts/xKrc6i0FpDY?feature=share

The dang ol' wobbles. I've chased different wobbles for 100k miles, fix 'em better, then, some other 20+ year old and 380k mile part goes out. 'tis the nature of the beast.

Zen and the Art of Toyota Maintenance

BUT! I found the most recent weebler and it is where the driveshaft mounts to the transmission. The mounting plate at the transmission and its bearing/bushing that holds that sucker steady is finally too tired to perform.

The thing is, I can't find that repair in the FSM that I have.... I'm not sure what that part would be called, and if any of you have replaced that part before, any help in locating the part number and the process to replace it, would be glorious and repaid with the great pride and esteem of knowing you've helped make another Tacoma's wobbliness, less.


Cheers

ps.Please make it Friedehh already will you?

 

A photo might go a long way here, but I believe you're describing the output shaft bearing on the transfer case (not the transmission if you're 4x4).

If you've had drive line vibrations in the past (your post and avatar tag "replaceable cardan" suggest you have) and continued to drive the truck without addressing them immediately, then you could have worn the output bearing. The same goes for the pinion bearing on the 3rd member.

As far as a solution- you'll likely need to get the xfer case to a transmission shop for a rebuild or look for a used replacement.

Have you removed the drive shaft and felt notable play in the output shaft/flange?

 

Yea sorry I tend to put the whole thing together in my head as the transmission.

Driveline vibration-I dealt with as quickly as I was able to determine the cause was the Cardan.

History of wobbles repaired since I bought it was:
First, transmission mount
Next, upper balljoints, and lower balljoints after failure, replaced all and was pretty stable.
Then, Driveshaft, Replaced whole thing.

Then everything was good for a while. My suspension was worn, bad, for a long time, didn't have the money to replace. finally got that replaced. Now that the suspension vibrations are gone this wobble during acceleration became obvious. I just Drove it for the first time today on the highway after getting sus and alignment.

no need to remove the driveshaft, I can wobble the mounting plate easy with my hand now.

There is a plate to access and replace that part.

Usually I can find the things I need in the FSM that I have but I'm not having luck on this one. I can find the matrix chart and it describes this wobble, but no page number reference for repair. which is the first time I've come across that

 

If you can move it by hand stop driving it- you're going to break something else (if that hasn't already happened).

I don't know. In the transfer case component and diagrams, an output bearing is not directly called out. There is a tail housing extension plate, but I don't know if that plate contains a bearing or not.

 

Ya, now im not daily driving this since I got my 01 all good.
so until I get this fixed she will be hanging out

this is where the wobble is

 

Thanks for reminding me that the driveshaft is mounted off of the transfer case as I can now find the area in question in my FSM. Doi.

So now that i’ve found it in my fsm, it is looking like the bearing is probably Inter grated in the “rear companion flange”. Which looks to be fairly simple to accomplish if that is the case. Am i looking at that wrong?

 

Yes- that's the diagram I was referring to. There is not enough detail to suggest there is an integrated bearing in the extension housing- or at least I would never interrupt the diagram as such- YMMV.

 

I was thinking that the rear companion flange has an integrated bearing since the rear companion flange is turning the drive shaft, there must be a way that it can spin but be stable within the extension housing, right? Wouldn't that have to be an integrated bearing, since there is no other bearing?

Surely someone has come across this before? I was hoping that someone has, before I start figure it out by pulling it apart and either fixing or replacing with a donor. because my transmission and transfer-case are in great working order, and haven't ever had problems.

 

It's certainly possible that someone has torn down an xfer case and will have a more definitive answer for you, but I do not.

I think you might be a little unwilling to admit/disillusioned to think you haven't had issues with your xfer case, play in that location is likely to only come from vibration over time. It didn't happen overnight.

 

Interesting assumptions I think we probably have different tolerances for repair work?

If I have to replace the whole tcase, I will. But I can tell you that is absolutely not my first guess from the flange having play. But also very aware that it could indeed be the tcase itself.

ya, it’s got 383,000 miles on it that’s how play can happen, that thing has been spinning a long time and now that my suspension geometry is really strong that is now the weakest link and I noticed it.


There is normally some play at that flange from what I understand, but this is now more than normal, from what I can tell.

Either way it will get fixed. It is intermittent still, based on how much I’m accelerating and how fast I’m going

also, there’s still a chance the wobble isn’t the flange at all… because vibrations and wobbles can come from lots of places. And as I said, I haven't had this issue the whole time, I have had different parts that caused different wobbles and vibrations.

 

Even easier than I ever imagined.
https://youtube.com/shorts/xKrc6i0FpDY?feature=share
This is why I don’t jump to worst case scenarios, like the transfer case being spent.