Sounds like you've made up your mind and want to get rid of it.
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Probably a grenaded transfer case
- Thread starter DouglasVB
- Start date
DouglasVB
Rising Sun Member
I was this morning but now I'm not this afternoon. Very wishy-washy on this 😪
J Kimmel
Hard Core 4+
How is it mounted? That’s what I would be looking at. I literally beat the s**t out of mine for several years with one tons and 42’s and never had a break like that. An entire aluminum adapter plate cracking in half would have me thinking about how it’s all mounted. I would have no issues throwing used stuff back in there, you have something else going on to cause all that damage.
DouglasVB
Rising Sun Member
In the front, there are solid motor mounts (I think they're "bomb proof" mounts from Trail Gear): https://trail-gear.com/engine/bomb-proof-motor-mount-kit.html
The t-cases are both mounted to one of those belly pan t-case cross members that Trail Gear sells. https://trail-gear.com/catalog/product/view/_ignore_category/1/id/7197/s/crossmember-kit/
The mounts between the t-cases and that belly pan are the HD ones from Marlin Crawler: https://www.marlincrawler.com/armor/crossmember/crossmember-mount-hd
I checked all the mounts after this happened. Everything looks good. No signs of cracks. No missing hardware. But I'll check again tonight as I disassemble the t-cases to see if I'm missing something.
Was there one or two tcase mounts?
Oh and I completely get the wishy-washy. I’m like that w/ everything I own. Hate it one min, love it the next. 🤣🤪🤷♂️
DouglasVB
Rising Sun Member
Two t-case mounts. That's how it was when I bought it and when I looked around online maybe five years ago to verify that was correct, it seemed that was.
DouglasVB
Rising Sun Member
Well..... that's interesting.
www.instagram.com
More photos to come. Waiting for my phone to upload them.
Albino Rhino 4x4 on Instagram: "Anyone ever see a @marlincrawler dual t-case adapter do something like this before? While driving on the highway? 😬 . . . . #Toyota #4runner #offroad #overland #adventure #explore #toyotausa #letsgoplaces #toyotaoffroa
81 likes, 28 comments - albinorhino4x4 on February 20, 2021: "Anyone ever see a @marlincrawler dual t-case adapter do something like this before? While driving..."
www.instagram.com
More photos to come. Waiting for my phone to upload them.
DaveInDenver
Rising Sun Ham Guru
I didn't realize there was supposed to be pictures. I don't do Instawhatever but figured out a way to extract the photos directly from the links.
Holy heck, never seen a Marlin do that.
Holy heck, never seen a Marlin do that.
DouglasVB
Rising Sun Member
There's also a video if it dumping fluid when I got off the highway on Instagram.
DaveInDenver
Rising Sun Ham Guru
I saw the video but thought the pictures were plenty explanatory. Are bearings seized?
DouglasVB
Rising Sun Member
No all the bearings are in great shape. The bearing retainer plate on the adapter plate is bent. Some minimal wear on a few of the gears but nothing crazy.
I'll do a big photo dump with explanations of what we're looking at in a second. Might take a few minutes to contextualize everything.
DouglasVB
Rising Sun Member
EDIT: Check out the link below for the photos that had been here. I had some issues with posting photos on this one so I had to re-post on Page #3 of this thread:
https://risingsun4x4club.org/xf/threads/probably-a-grenaded-transfer-case.30604/page-3#post-361643
https://risingsun4x4club.org/xf/threads/probably-a-grenaded-transfer-case.30604/page-3#post-361643
Last edited:
DouglasVB
Rising Sun Member
PhatFJ
Hard Core 4+
I know a guy that has an R151 with an fj60 split case on it if this could help. Tough tranny and tcase.
DouglasVB
Rising Sun Member
Okay it seems to be letting me do images again... carrying on...
View of the rear of the Marlin Crawler dual t-case adapter plate.
View of the front of the rear t-case. Note the aluminum shavings or chunks or whatever to the left of the lower bearing. Again, no idea where they're coming from.
Here's the money shot.
Is that the serial number maybe? Or a part number? Or some casting ID?
Looking into the rear t-case. Small blessing that the 4.7:1 gears are still in good shape. All bearings looked great. No signs of damage to the rear t-case.
Assembly associated with the output shafts. Everything looked good here. And notice all the gear oil on the table. It was all pretty clear and clean-looking.
The rear t-case and output shaft assembly.
This is where it starts to get strange. Check out the aluminum on the speedo gear on the rear output shaft. It appears to have come in contact with the rear output shaft housing? Or something.
The whole output shaft gear-train assembly is just slightly... wobbly? The bearing looks good and feels good but it all was just a little wobbly. Maybe the plate that retains the bearing also got bent like the one on the Marlin Crawler dual transfer case adapter? It didn't look bent when I took it out though. Maybe that's normal slop?
Like seriously wut. No damage to the plastic speedo gear though.
You can see where it was chewing at the housing. Looks like it only chewed right when the failure happened or else I would expect to see a lot more horror here.
This oil passageway was a bit bent but I think that might have happened as I took apart the rear t-case case and output shaft assembly.
The whole thing splayed out like some mad science experiment.
Here's a better view of the warping on the teeth in the front t-case. Really doesn't look bad to me. The main contact face on the teeth looks good.
Another view of the mess.
That's all the photos I've got.
View of the rear of the Marlin Crawler dual t-case adapter plate.
View of the front of the rear t-case. Note the aluminum shavings or chunks or whatever to the left of the lower bearing. Again, no idea where they're coming from.
Here's the money shot.
Is that the serial number maybe? Or a part number? Or some casting ID?
Looking into the rear t-case. Small blessing that the 4.7:1 gears are still in good shape. All bearings looked great. No signs of damage to the rear t-case.
Assembly associated with the output shafts. Everything looked good here. And notice all the gear oil on the table. It was all pretty clear and clean-looking.
The rear t-case and output shaft assembly.
This is where it starts to get strange. Check out the aluminum on the speedo gear on the rear output shaft. It appears to have come in contact with the rear output shaft housing? Or something.
The whole output shaft gear-train assembly is just slightly... wobbly? The bearing looks good and feels good but it all was just a little wobbly. Maybe the plate that retains the bearing also got bent like the one on the Marlin Crawler dual transfer case adapter? It didn't look bent when I took it out though. Maybe that's normal slop?
Like seriously wut. No damage to the plastic speedo gear though.
You can see where it was chewing at the housing. Looks like it only chewed right when the failure happened or else I would expect to see a lot more horror here.
This oil passageway was a bit bent but I think that might have happened as I took apart the rear t-case case and output shaft assembly.
The whole thing splayed out like some mad science experiment.
Here's a better view of the warping on the teeth in the front t-case. Really doesn't look bad to me. The main contact face on the teeth looks good.
Another view of the mess.
That's all the photos I've got.
DouglasVB
Rising Sun Member
Thanks for the offer! Would that mount up to a 22RE? Any chance he's out in California? I'm in Monterey these days.
I'm thinking the lowest cost route forward would be to get an entire t-case and output shaft assembly from a junk yard, a new adapter plate (maybe from Advanced Adapters since they seem the cheapest), and use those parts plus these parts to reconstruct my 💩📦?
DouglasVB
Rising Sun Member
J Kimmel
Hard Core 4+
Wonder if the adapter loosened up
Just some guy on the internet, so take it for what it's worth.
I have always been told and heard that the motor and tranny mounts needed to be of the same material in order to work the way the system is supposed to. Rubber or poly or whatever, but don't mix and match because it will add stresses to the drivetrain bits when each piece is moving slightly more or less than the other piece when subjected to the same amount of force. You mentioned that the motor and tranny mounts were Trail Gear and the rearmost mount was a Marlin piece. Where they the same material?
Also, if I was Marlin Crawler, which I ain't, I would do a whole lot to try to keep that picture from being spread all over the 4x4 world and make sure you were a happy customer. I don't know if you have heard from them, but I bet they would like to see how their piece failed. Because for whatever reason, that adapter plate broke and you are living with the consequences and "you can buy another one if you're quick when we get them back in stock" is shitty.
Best of luck getting this figured out
I have always been told and heard that the motor and tranny mounts needed to be of the same material in order to work the way the system is supposed to. Rubber or poly or whatever, but don't mix and match because it will add stresses to the drivetrain bits when each piece is moving slightly more or less than the other piece when subjected to the same amount of force. You mentioned that the motor and tranny mounts were Trail Gear and the rearmost mount was a Marlin piece. Where they the same material?
Also, if I was Marlin Crawler, which I ain't, I would do a whole lot to try to keep that picture from being spread all over the 4x4 world and make sure you were a happy customer. I don't know if you have heard from them, but I bet they would like to see how their piece failed. Because for whatever reason, that adapter plate broke and you are living with the consequences and "you can buy another one if you're quick when we get them back in stock" is shitty.
Best of luck getting this figured out