american axle true trac

[mpaulson]

I'm looking for advice from anyone with the TrueTrac carrier in their rear diff. Does your diff feel like it is grabing while you turn with a load on or behind you? I'm about 10,000k or so into the truetrac carrier and just in the past few weeks while on holidays it seems to "chatter" or cause a jerky tug while turning. It is only noticable with a load in tow. I go lightly on the throtle while turning, but obviously have to push a little to go. The diff just went through another good cleaning with the axles out and cover off to make sure it is clean and little was found. The only change is that instead of Amsoil, it has Lukes lube in it now. I wouldn't think that would make any difference would you?

It seems to keep on producing metal pieces that look like the old carrier gears!!!. been cleaned 6 times in 10,000k and seems to keep coming up with debree.

I just want to see if what I'm feeling is the normal operation of this carrier. I have heard it refered to as a "harsh" carrier.

 

[PFranzese]

I don't get a chatter but if I do have a load or turn sharp with a little throttle the inside tire will chirp a little or create the jerky feel from the rear. Been doing that since new and I have 46k on it now with amsoil for the last 20k.

 

[DUBLR]

Puit some postitive traction additive in and it will go away. Same thing happended to me.

 

[Prairie Dog]

Mine has done it since new (77k now). Contrary to what is logical, I tried the friction modifier and it "seemed" to help for a very short time but I kinda chock it up to just my perception. FM really shouldn't do much of anything in a diff without clutches like ours.

 

[07 ThunderRoad]

from the '07 service manual

AXLE

NOTE: DaimlerChrysler recommends using Mopar® lubricants or lubricants of equal quality.



10 1/2 AA - Mopar® Synthetic Gear Lubricant 75W-90

10 1/2 AA EL- Mopar® Synthetic Gear Lubricant 75W-90

11 1/2 AA - Mopar® Synthetic Gear Lubricant 75W-90



NOTE: Trac-Rite™ / Trac-Rite EL™ differentials DO NOT require Limited Slip Additive.



All 10 1/2 and 11 1/2 rear axles only had the Trac-Rite or Trac-Rite EL option.

 

[DUBLR]

That is what the manual says but additive works. 200,000 miles on 03 to back it. Read another thread on this and it worked for me.

 

[HBarlow]

I haven't experienced it in about 330k miles of use of AAM axles in two different Dodge Rams. My '06 towed heavy to very heavy trailers every day of it's one year and nine month, 230k mile service to me. It had a Mag-Hytec differential cover installed at about 300 miles and fluid changed with ordinary off the shelf synthetic lube products from Auto-Zone every 50k miles. A drop of friction modifier was never used and never needed. The AAM doesn't use clutches and doesn't require or benefit from friction modifiers.

The problem is often caused by heavy loads on the rear end and compressing the rear springs which binds the u joints. Raising the rear end back to normal unloaded positions with new springs, additional leafs, Timbrens, airbags, or other solutions usually corrects the problem.