Worse leak from transfer case after replacing seal (Mitsubishi)

[Outdooraholic]

A couple of weeks ago I noticed a slow leak where the front driveshaft comes out of the transfer case. I ordered a new front output shaft seal (Timken part #223608) and 3 quarts of Redline MT-90 fluid. I changed it out this week and everything seemed to go well. Yesterday I drove the truck to work and when I went to leave there was a big puddle of gear oil under the transfer case and it was dripping from the same place. Was this the wrong seal?? Any advice? What was a small leak before I "fixed it" is now a very large leak. The old seal was stamped with part# MD731708.

 

[mezmochill]

Maybe the the old seal was allowing enough pressure to bleed that it was preventing another seal from going.

New seal, normal pressures now, blow different seal.

Or the leak is from elswhere to begin with???


Just guesses, I know nothing about mitsubishis. Good luck though, somebody will figure it out.

 

[plh]

does the part number from Timkin cross reference?

https://www.amazon.com/Md731708-Seal-Axle-40X52X10X10-Mitsubishi/dp/B00HCOGWRC

 

[Outdooraholic]

According to Mitsubishi ASA - MD731708 = OIL SEAL, T/F FR OUTPUT SHAFT
On RockAuto.com I ordered both Timken 223608 - front output shaft seal and Timken 224052 - rear output shaft seal.

Once I got the old MD731708 seal off I compared both and 223608 looked the closest and matched the description, so that is what I used. 224052 appeared to be the same diameter inside and out but was only about half as think as the original seal and according to the description was for the rear output.

When trying to cross reference MD731708 I am only finding Febest 95IAY-40521011X.

**EDIT - On O'Reilly's website it shows 223608 being rear and 224052 being front. I think they are backwards on RockAuto's website. I'm going to take out 223608 and install 224052 and see if stops the leak.

 

[Outdooraholic]

I drove it to work and just checked it an hour and a half later and no leak.

 

['round n' back again]

happy ending