Trying to wrap my head around my transfer case full of ATF

Joined
Apr 26, 2018
Messages
4
Location
austin tx
First post here! I've searched around for an answer but there's so much info i can't really seem to understand what im looking for.

I have a 1988 FJ62 with 211000 miles. 3rd owner. Purchased last december.

When i was checking the vehicle out, i noticed (what i thought) was gear oil slowly leaking from the rear seal of the transfer case and onto the drive shaft, which slung it onto the bottom of the body. "No problem, I'll get around to fixing that later". The leak was not real noticeable so i forgot about it.

Fast forward to a week ago. My gf and i are driving from Austin to big bend. 2 hours out and the transmission light comes on and i can feel heat through the floor. No noises, and shifting normally. Stopped at an auto store and the transmission was a quart and a half low but the fluid was red and didn't smell burnt at all. Transmission cooled down, light went off, we kept driving.
80 miles later, light comes on again. we pull off and the transfer case is lightly smoking.
"Ah, the leak must have finally dried the case out. "
It wasn't dry. I pulled the FILL plug and to my suprise, hot burnt ATF started pouring out.

We flat bedded it 4 hours home at a cost of 987 dollars. Damn.

Called a couple of mechanics including someone at TLC and was told that this was common and that the chevron seal was worn out and that to fix it, i was going to need to tear my t-case apart to get to it, and in the process rebuild the t-case. Fine. I can do that.

Im looking for what part/parts i need to replace!

Sourcing a quality transfer case rebuild kit is no problem, but i cant find a part number or diagram of this "chevron seal". Several people in the industry haven't even heard of it.

What do i need to fix my truck?
 

Godwin

Resident Herpetologist
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Joined
Dec 4, 2004
Messages
4,817
Location
Alabama
Seal between the transmission and transfer case has worn and allowed ATF from the tranny to fill the transfer case. Transfer case should be filled with gear oil. Time to rebuild the transfer case and replace the seal between the t-case and tranny and I recommend using the FJ62 OEM seal.
 

OSS

Joined
Jun 30, 2017
Messages
2,329
Location
Oblivion
Part number for that transfer case oil seal is PN:
90316-48003

It's just called an oil seal (that's what Toyota calls it). Maybe others call it a "chevron" seal (never heard the term) because it carries the rank of "General" in the transfer case- being the bastard that it is.

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Joined
Apr 26, 2018
Messages
4
Location
austin tx
Thank you. This was exactly what I was looking for. Pic heavy rebuild thread to follow. Just now learning the format. Finally got access to some fsm. Infinite gratitude to you all.
 
Joined
Mar 14, 2008
Messages
1,058
Read and re-read the procedure. Be ready when the idler shaft falls out that ATF is going to pour all over you until you get it shoved back in. Then again when you change out the orings on it.
 
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