‘94 Transfer Case

[Big T]

Got under the ‘94 Suburban to check for leaks. Found the drain plug loose on the front differential. Tightened that up and topped off the diff with about 8 oz of oil.

Checked transmission fluid and it’s not only full, but also very clear/clean.

Went under it to take some pics of the leak plumes, which are not all bad. Save for one plug under the front, it’s mostly dry:

 

[btfarm]

Rear main?

 

[Big T]

Rear main?

Rear main seal on the transmission?

BTW drove it around and it’s running pretty darn good. Son will drive it to work 3 days this week.

 

[btfarm]

The 2nd looks like rear main crankshaft seal leakage.

 

[Big T]

The 2nd looks like rear main crankshaft seal leakage.

That’s the junction of the transfer case connecting to the rear of the transmission.

 

[btfarm]

That’s the junction of the transfer case connecting to the rear of the transmission.

I see it now.

 

[WarWagon]

It doesn't look like you have taken the fill plug out in awhile to check the level or condition of it's oil. Have a drain pan under it in case it's overfull. The seal between the transmission and the transfer case gives up and fills the transfer case up.

Depending on how fast it's leaking you may have low transmission fluid shortly after removing the excess oil. It may quit moving low transmission oil level.

I would check the bolts are tight to the transmission from the transfer case.

 

[Big T]

Q: what grade oil goes in the transfer case?

Q: will a transfer case from a ‘95 Suburban work in a ‘94?

 

[Big T]

Does the transfer case use ATF?

 

[jrsavoie]

Does the transfer case use ATF?

Seems like some do and some don't.

I usually check the fluids for your vehicle page on Amsoil.com

Anybody can use the pages

 

[Bowhunterbrown]

I think all the earlier floor shift transfer cases just take regular ATF. The later push button/auto-trac transfer cases require the blue stuff from GM with friction modifiers for the clutch pack.

 

[WarWagon]

Does the transfer case use ATF?

That's all I ran in the 1992-1995's I had. Esp. since that seal wasn't good in a couple of mine, well, till the transmission was rebuilt and that seal replaced.

 

[Big T]

I pulled the upper fill plug tonight and……it was over full such that it dumped a heavy enough flow that it got into my hair :-(

So I have a leaking seal. Need to get a view of the tag on it to confirm the model. I will order up gasket, plus the seals for each driveshaft. This won’t get done until I’m back down from Montana in February.

 

[Bowhunterbrown]

Might check your adapter for cracks and/or wallored out mounting holes. I had that between my 4l80e and 246 autotrac that had a leaking trans/transfer case seal.

 

[Big T]

Might check your adapter for cracks and/or wallored out mounting holes. I had that between my 4l80e and 246 autotrac that had a leaking trans/transfer case seal.

I will when I pull the transfer case.

Again, this will be addressed in February. Not a primary driver, so we have the luxury of parking it. Told him to park it in front of the garage at my place to make it looked lived in.

 

[Big T]

I have a NP 241-C from a '95 K2500 Diesel Suburban in working condition, about 185K miles on it. Need to verify the transfer case model in the '94. If the transfer case in the '95 will work in the '94, I would like to do a rebuild refresher on it first and just swap it in. Which kit do I buy and where do I buy it from? Would like verified USA parts. Does this kit meet those standards:

Dodge Chevy Transfer Case Rebuild Bearing & Chain Kit NP 241 (BK241D-1) | eBay

Fits various Dodge & Chevrolet applications equipped with the NP 241 Transfer Case. Your NP 241 case may have any 1 of 3 1.25" wide chains. 8 CYL 5.0L 1989 - 1994 NP 241. 8 CYL 5.7L 1989 - 2004 NP 241.

www.ebay.com

 

[jrsavoie]

I also just posted a transfer case out of a wrecked 1996 K1500 gasser in for sale section. Along with a bunch of other stuff.
Shipping would probably suck.
No idea what the transfer case is worth. But it needs to go.

 

[Big T]

I also just posted a transfer case out of a wrecked 1996 K1500 gasser in for sale section. Along with a bunch of other stuff.
Shipping would probably suck.
No idea what the transfer case is worth. But it needs to go.

Seen guys getting $200 for them. Post it up on a Jeep forum as they like them for conversions. Or post up on eBay.

 

[jrsavoie]

Seen guys getting $200 for them. Post it up on a Jeep forum as they like them for conversions. Or post up on eBay.

Thanks. That gives us a start

I'd just as soon sell the whole pile to somebody and let them deal with it.

 

[Big T]

Thanks. That gives us a start

I'd just as soon sell the whole pile to somebody and let them deal with it.

There were NP 241s with 27 splines and 32 splines on the shaft. I think the 1500s had the 27 splines, while the 2500 and 3500 had 32 splines. Be nice if you could check.