I put too much tranny fluid in and before I fixed it...Update Tcase help??.

[chevyfumes]

I over filled the th350 by about a quart, I couldn't see sh!t with the clean ATF and the shiney new dip stick. So anyway I took the Blazer for a spin to heat up the tranny and puked some out, the weird thing was when I got it back to the shop and crawled underneath to wipe off the fluid the tranny was clean. No ATF anywhere, it was all over the back side of my Tcase, down the rear DS, on the bottom of both mufflers and all over the pumpkin.
After I cleaned it up there were no leaks anywhere, so is the way it was spread out and sprayed just from airflow? Or am I a female Alaskan native that just ate a sandwich?

 

[DokWatson]

Probably came out the breather.

 

[chevyfumes]

I didn't even think to look where that was aiming. I havent been under the Blazer in a few years.

 

[K85 Octane]

I vote breather and airflow

I was driving my dads duramax w/allison when the cooler line decided to break. OMG was it everywhere. Wheel wells, rims, rocker, 10" up the fenders, and all down the underside.

Inside the freaking RIMS, what the hell?!!

so I feel your pain
at least the truck feels better, it always feels better once you chuck a little

 

[AJMBLAZER]

Wait...fumes is in the garage talking tech...on HIS BLAZER!


This isn't right!

 

[miniwally]

I over filled the th350 by about a quart, I couldn't see sh!t with the clean ATF and the shiney new dip stick. So anyway I took the Blazer for a spin to heat up the tranny and puked some out, the weird thing was when I got it back to the shop and crawled underneath to wipe off the fluid the tranny was clean. No ATF anywhere, it was all over the back side of my Tcase, down the rear DS, on the bottom of both mufflers and all over the pumpkin.
After I cleaned it up there were no leaks anywhere, so is the way it was spread out and sprayed just from airflow? Or am I a female Alaskan native that just ate a sandwich?

Not a big deal, it should have come out the breather and just coated everything behind that point.
I run the Th350 in the buggy/race car a quart over full all the time and haven't ever really had any issues. It will push a bit of fluid out the vent into the catch can if theres too much.

 

[chevyfumes]

Wait...fumes is in the garage talking tech...on HIS BLAZER!


This isn't right!

I'm cookin up something special for the shooting range, don't get yer panties in a bunch.

Not a big deal, it should have come out the breather and just coated everything behind that point.
I run the Th350 in the buggy/race car a quart over full all the time and haven't ever really had any issues. It will push a bit of fluid out the vent into the catch can if theres too much.

Yeah I'll have to roll back under it and see where I mounted the breather (been a while), just looked weird where the ATF ended up.

 

[COCHEV]

concider it a nice rust prevention coating

 

[Smokinthehippies]

Wait...fumes is in the garage talking tech...on HIS BLAZER!


This isn't right!

lol. i didnt even know he had a blazer?

i just figured him and jek were here just for the padding.


which just means i havent been here long enough to remember back when they were under 10k posts.

 

[AJMBLAZER]

I'm cookin up something special for the shooting range, don't get yer panties in a bunch.

I'm hoping it involves a pintle mount on a roll bar and not shooting the Blazer.

lol. i didnt even know he had a blazer?

i just figured him and jek were here just for the padding.


which just means i havent been here long enough to remember back when they were under 10k posts.

Hell, they both do. I barely remember vague allusions to both as moving objects.


...and when you joined they were probably both still over 20,000.

 

[chevyfumes]

I even drove mine to Utah for a little shindig that some guy named Steve had.
Of course if stormtrooper had talked me into wheeling my busted up Blazer it'd still be there, just think,,,,9 years later it now has a functioning transfer case. I'm making progress, I can't speak for Jek...

 

[Smokinthehippies]

I'm hoping it involves a pintle mount on a roll bar and not shooting the Blazer.


Hell, they both do. I barely remember vague allusions to both as moving objects.


...and when you joined they were probably both still over 20,000.

i know for sure jek was, i think fumes was in the 19k range but not 100%

I even drove mine to Utah for a little shindig that some guy named Steve had.
Of course if stormtrooper had talked me into wheeling my busted up Blazer it'd still be there, just think,,,,9 years later it now has a functioning transfer case. I'm making progress, I can't speak for Jek...

lol. your blazer has been collecting dust for more years then i've been driving in general! i dont know if thats worse for me or for you!

 

[chevyfumes]

I just took it out for a spin after draining abou 3/4 of a quart of ATF out and the same thing when I got back, fluid everywhere but on the tranny. So I started looking at the back of the Tcase and snugged up some bolts, Hmm seem fine, so I decided to check the fluid in that. Unbolted the filler square bolt and about 2 quarts of fluid came out. I thought I unbolted the drain at first. I thought WTF??? I know it was warm but it wasn't hot and 2 quarts!!!

Now I can't tell for sh!t what color it was so I can't tell if it was ATF or 90wt. I know I filled the Tcase w/ 90 but could the tranny have busted a seal and been puking into the Tcase?

I have no idea how that much fluid could have been in there, I know I didn't overfill the tranny that much and the Tcase is a no brainer right? Fill til it's level with the fill hole right?? And it couldn't have been that hot?

So WTF? What's going on? The Tcase is a 205 BTW.

 

[dremu]

I just took it out for a spin after draining abou 3/4 of a quart of ATF out and the same thing when I got back, fluid everywhere but on the tranny. So I started looking at the back of the Tcase and snugged up some bolts, Hmm seem fine, so I decided to check the fluid in that. Unbolted the filler square bolt and about 2 quarts of fluid came out. I thought I unbolted the drain at first. I thought WTF??? I know it was warm but it wasn't hot and 2 quarts!!!

Now I can't tell for sh!t what color it was so I can't tell if it was ATF or 90wt. I know I filled the Tcase w/ 90 but could the tranny have busted a seal and been puking into the Tcase?

I have no idea how that much fluid could have been in there, I know I didn't overfill the tranny that much and the Tcase is a no brainer right? Fill til it's level with the fill hole right?? And it couldn't have been that hot?

So WTF? What's going on? The Tcase is a 205 BTW.

There is a seal, IIRC, between the tranny and the T-case.

You oughta be able to tell ATF from 90W by consistency, even if you have a really bad case of Daltonism...

-- A

 

[chosen(1)]

There are 2 seals in the adapter between the trans and x-fer case. I've had the same thing happen, and it's a real pita to do 3 hours of work to replace a $5 part.

 

[chevyfumes]

Fock.Anybody got any pics? They are seals in the adapter and not the tranny.

 

[chevyfumes]

OK I cleaned it off one more time, checked the fluid in the 205 and it does look and smell like ATF, but it was level. I ran the Blazer again got it nice and hot and checked the tranny fluid, it's now level, clean and where it should be, now no leaks anywhere.
So if the tranny did leak into the Tcase then it floated ATF on top of the 90, and the tranny looks high enough that it shouldn't flow the other direction unless I'm nose down about 30 degrees so I guess only drive it uphill.

 

[Fordum]

The 205 pretty much does not care what you put in it.

You could run fresh water in place of oil if you didn't let it sit and rust up....
Personally, I run synthetic 90W.
When gas mileage got critical, the truck companies switched over to ATF to cut down on parasitic losses associated with churning the heavy oil around.
The first time I read that, I figured that the 205s would last about long enough to get out of warranty, but I was wrong. I don't think that it shortened the life much at all.

Part of that is because ATF is pretty amazing stuff. I have a set of tribology books (Reference books on the study of lubrication and friction, google it.) and the chapters on ATF state that it is the most complex lubricant ever made.

That particular issue is about 30 years old, so it may not be true anymore. I need to get an updated copy.

However, I got a little off topic. Funny, that never happens to me..........

While the 205 will just shrug and take it, the paper clutches, hydrulaic systems and other goodies in the automatic will just throw up their hands and run around screaming nonnie nonnie nonnie if too much 90 weight gets in there.
Trust me, you do not want that......

There have been several threads about those seals, but one in particular stands out. It involved double lip seals, single lip seals, wrong part numbers, just about everything you could imagine.
I think the poor 205 went off and back on 3 or 4 times.

It was so bad, I suggested sealing up the vent on the 205, running ATF in both, and putting a return line between the two......

I will look around for it.

 

[chevyfumes]

Cool thanks. I was gonna just run ATF in it but I had a jug of new 90wt in stock at the time I filled it. If nothing else I'll keep an eye on it and if the tranny fluid even starts to look funny or for whatever reason I suspect migration I can at least switch the 205 to ATF until I get more info on exactly whats going on.

 

[Fordum]

Well I finally found the thread. Turns out it was two different threads. But it was a 241, not a 205 that was getting the transmission fluid into it, so that is no help.

The problem with running ATF in both and letting the seal leak, is that sooner or later, one or the other is going to starve and get damaged.

I still think that running a return line from the 205 vent back to the tranny, would work, but I don't know anyone willing to risk it.......
You would probably need to install a dip tube where the vent is in the 205 so that the fluid would flow back before the 205 go too full and put more pressure on the seals.

Hey, it works in my old 8N Ford tractor. The hydraulic pump is mounted in the bottom of the rear end, and the transmission, rear end and pump all use the same fluid. No seals between any of them.
It just circulates around in the housing.