AAM rearend problem

[CumminsWill82]

Hi there, i was changing my rear fluid sunday since after the hurricane i headed to my buddies farm in Homestead, FL and it was flooded 12-16 inches in some parts so i decided to change front and rear fluids. My front was fine, but the rear was a bit nasty looking. I had changed the fluid with 1,000 miles cause it looked white like if had water. now at 12k miles when i had the cover off i saw my diff carrier was eaten away by the gears from the torsen diff :{ (someone not long ago posted a pic about this). The rear end has been fine no noise and torsen diff has been working fine ,only thing is it clunks alot, improper backlash in my opinion . BTW never towed or abused ,has anyone else had this problem. They should have stuck with a DANA 80

 

[betterthanstock]

are u sure? isn't there a TSB where they say people THINK it looks that way but it's only machining marks from manufacture? How is the magnet? If It's full of filings you got a problem if not may be not... .

 

[CumminsWill82]

yea the magnet had metal fuzz, no machinig marks it wasn't like that when new

 

[EBottema]

Dana, we love you. I love mine. Change is not always good...



Take is by the dealer? its a 2005 isnt it?

 

[CumminsWill82]

yea its an 05, Dana we definetly loves, hell i marry her. thats one thing the fords got over everyone else the dana 60 fronts and 80 rears oh !and the 135 on the f 450&550

 

[Punkineater]

Correct me if I'm wrong, but I believe Ford runs a Sterling in the rear of the F250 and F350 and not a Dana 80.

 

[Subby]

I'm thinking Ford runs the 10. 5 Sterling in the F250 and SRW F350s, a Dana 80 in the F350 DRWs, and a new Dana axle in both the 450/550 starting with the 05s. Before this, the F450 got what appeared to be a Dana 80 HD with an ribbed aluminum cover. Never heard this officially but sure did look an awful lot like our Dana 80 in the 2nd Gens. The truck I drive everyday for work is an 02 F550 with the Dana 135 (or is it 130C??) rear. Man, no worries with that axle. We have an 05 F450 Crew 4X4 at work and I can say for sure that it has neither the Dana 80 HD or the 135. Seems like I read or heard somewhere that Dana developed an axle somewhere in the middle so Ford could use one axle for both models. Uh oh, look what happened. I kind of jacked this thread. Well I do love to talk about big rearends! Axles, I mean.

 

[CumminsWill82]

yep 10. 50 or 10. 25 rear made by VISTEON a ford motor co spin off division like aam was gm. remember gm 14 bolt rears all were made by saginaw a gm division latter sold to a fomer chrysler vp by the name of Dauch and named none other than AAM corp. similar fate with New Venture gear. GM had muncie that manufactured the sm465 & 420 4sp granny trannys. Chrysler i think had a susidary ,New Process Gear(damn good trannys&tcases). In the early 90s i think they both merged and latter became independent from chryco & gm, and recently was bought by Magna something another german owned company.

BTW DC aslo owns frieghtshaker,detroitdiesel,westernstar,sterling.

 

[Nate]

Some metal fuzz on the magnet in a diff is normal. I wouldn't imagine 12-16" deep water would have let water into the diffs, the breaters are pretty high.

 

[CumminsWill82]

the breathers are pretty high, but when your diff is hot and it runs into cool water high enough, it will cool rapidly and cause like a low preassure inside and it'll suck water through the seals.

 

[JRG]

<1000 mi should not be too bad with syn fluid, no towing, or hard romping. I would guess there was an issue prior and the water just expidited the it. My freinds 03 had a bad pinion from the get go. It is under warranty just take it in, has to be done no matter what anyway.



As far as pulling water through the seals. . I doubt it. It would suck air in throught the breather befor water throught the seals. Unless the breather was blocked off which is the mistake some wheelers do instead of extending their breathers.



JRG