BW 1356 Transfer Case rear seal

[mox-ct]

I have a 1997 F350 dually 4X4 with a automatic tranny and the BW 1356 transfer case. I'm original owner so I know whats been done to it. I blew the original magnesium case BW 1356 and replaced it with a rebuilt aluminum case BW 1356 about 5 years ago. Now the rear seal is leaking a little. I went to the local parts store and got a new seal and pulled the drive shaft which slides into the seal. Then pulled the seal. When I installed the new seal, it was loose. I measured them, the one I pulled is 2.740 and the new one is 2.700". The new one fits the driveshaft fine but too loose for the hole in the tail shaft. Are there different tail shaft housings??? that need different seals???

Ford is always messing with my head!

[okney1lz]

There is a "Bolt On" and a "Slip On" 1356 according to Transtar's catalog.

They show different seals for the front and rear output shafts. And they list a part number for the "Slip On" housing seal in the exploded view, but not in the parts list.

Is it possible you have the seal for the opposite output shaft?

Which seal are you replacing? Front or rear?

[mox-ct]

My bad, it's the slip on rear drive shaft. I went back to the parts store. The guy immediately called his bud at Ford who gave him the part number. He came out with the correct seal and said his electronic catalog was incorrect, i.e. had the wrong part number listed. Go figure?!?! The new correct seal fits purrrrrfect!!! I check the fluid, it needed about a pint. While I was there, check the rear differential, it needed about a pint and the front diff was fine. Thanks for your consideration in helping me find a solution, it's always appreciated.