Your diff. should not be that loud. Check your bearings. From my experience, a deceleration noise is usually a pinion bearing. Do not let it go too long, as a bad bearing will damage other components. I have also had pinion nuts come loose and had a loud howling on decel. If you need to have your rear rebuilt, make sure you go to an experienced mechanic. An improperly setup ring and pinion will only last a few miles.
Dave Fillman
45MB
---- you wrote:
> Hi Keith,
>
> Did you ever get any feedback on this? I've noticed that when I let up on
> the gas and the slack in the drive train catches up to the rear diff, it
> gets real noisy. I greased the bearings via the zerks and changed the diff
> fluid. There wasn't any metal in the oil and it seems to have quieted down
> a bit. As a result, I am also wondering if having a box of gravel in a
> cement mixer during deceleration, is just a normal sound for these rear
> diffs.
>
> I am intending on tearing mine down to replace the seals and will get to
> look around inside while I'm at it. If I find anything, I'll let you know.
>
> Can anybody on Mil Veh add to this?
>
> Greg
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