Notorious J
It's gonna break, so might as well send it!
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I've been blasting around with the KEXB running paddle tires this winter, and having a good time of it. This weekend, things went wacky. On Saturday, a freshly built center dif seized up. Everything inside was virtually locked up and the inside of the case basicaly welded itself to the gears. It still ran like it was a spool, but with giant paddle tires, kept thermalling out. Fixed that on Saturday night and got out again on Sunday. This time, after about 15 minutes of good bashing and no jumping, the dreaded click in the rear dif started. Eventually it lost all drive to the rear wheels. While going through the motions of repairing/replacing the rear dif, I realized that no teeth on the spur were chipped and the gears inside were all fine. Cleaned and filled the dif with 60k and ran it on the bench. Buttery smooth. Haven't tried it under load yet, but if it goes well, then I have no idea what's going on. Anyone else ever have something similar happen? It's a HR aluminum gearbox and there was no sign of damage or cracks to it. Rear input gear is fine too. Is it possible that the center dif is blown but somehow managed to keep spinning the front tires? Again, on the bench everything seems fine.