markviii wrote:Glad to hear it had a happy ending. I have had some high-mileage Fords with 8.8's and never seen a grooved axle, but that doesn't mean it isn't common. I know the '03 Panthers had problems with failed axles, and I have heard of some half-ton trucks that did a lot of towing eating the axles. Now that you have made it home it might be a good idea to drop that gear lube...hard to say how many shavings were in the axle tube.
For those that like to tow/haul big loads, there is no replacement for the right truck. A 3/4 ton is a big upgrade over a 1/2, but there are also 3/4 ton trucks out there with semi-floating rear axles. GM made a 14 bolt semi-floating axle, and Ford made their 10.25" differential with semi or full floating axles. The easiest way to tell what you have is to see if the axle is bolted to the hub or not. The axles can be removed from a full-floater without removing the differential cover, but on a semi-floater you must remove the cover to pull the c-clips. Either type of axle will do the job if it is in good shape, but the full-floater is preferred if you want to run at the limits.
Regardless of what you drive, it pays to run a high quality gear lubricant and change it periodically..especially when towing heavy loads.
i have to tear it apart anyway to replace the right backing plate, and rebuild the trac lock, the clutches got smoked, also going to install two new axles when i get the extra money, the axle my friend in georgia gave me is in fair condition, i have maybe 20,000 miles.......after doing alot of thinking, i thing the crown in the road did it, i bet the seal was leaking on the passenger side and the oil got low, and the roads in alabama are crowned real bad......well we were in the passing lane doing 75 mph and fighting the wheel to keep her out of the ditch, the right side prob ran out of oil and smokes, i'm just happy we made it home with the car and only 24 hrs behind schedule.