whistling sound while driving

[NOPHO84K30]

I think my rear diff is going out. When I did the rear pinion seal I noticed that the yoke moves back amd fourth alot and you can feel the bearings in it while spinning it not good .
Now if it dose blow up will the axles come out. Its a corp 14 ff.. anyone have this happen. I had a custom deluxe 20 and shot the cross pin out the cover and both axles came out while towing it. but I dont know if it was a semi or full foater

 

[MrMarty51]

Axles are bolted on, no, they wont come out when the diff. blows.
I`d stop driving it now and throw in a set of bearings and seals, maybe a new spider set too.

 

[HotRodPC]

Sounds like a classic case of gear howl. Usually is a sign of wrong installation if recently set up, OR very well worn gears. If it's worn gears, I've known them to run and howl for many many more miles if you can tolerate the wolf chasing you down the highway.

No you won't lose the axles on a Full Floater. The axles are bolted in on the outside of the wheel hubs. I believe it's 8 bolts on each axle.

 

[crazy4offroad]

Check the backlash, it may be correctable. As far as the pinion moving all around...FIX IT!