rear t-case output seal

[LA_Fred]

Hey guys,
this is a fairly common problem and
this is the second seal that has gone bad in 3000 miles? This last seal I made sure to silicone the splines, lightly sand the area where the t-case and seal seat and made sure to lubricate the area whera the seal and output shaft connect.  torqued to correct specs and still about 1500 miles late, leaky leaky!
BTW the case is a gear drive dual ultimate with 4.7's in the rear case.
Any comments?

Best regards,
Fred

[greengo]

i had a simular problem on a third member flange. it had a small almost unnoticable groove in it where the old seal rode. i sanded it down a little to smooth it out, but it still leaked. so i thought i had damaged the seal when installing, and replaced it. once again it leaked, this time i pulled it apart and decided to put a speedy sleave on the flange, it was about $30 at napa, and it fixed the problem. that small grove caused it all along. the other possible cause for your leak could be the problem i am experencing now, my rear output bearing on the t-case hase about a 1/4" play in it, causing it to leak. im pretty sure this isnt your problem cause you mentioned nothing about bad driveline vibes. hope this helps.  Kory

[84runner]

And don't over fill