General Tech Singing Rear Wheel Bearing

[KVH]

I hope I'm not hearing what I think I'm hearing. In fourth gear, around the same speed, I was hearing a singing from my passenger rear wheel area. I remember bringing the hub to a shop four years ago in the midst of a rebuild, and they advised against pulling it apart. They said it was fused solid with that wedge key fitting. I don't hear the noise in second or third gear. There's a chance its from the transmission. I doubt the rear end. Both have plenty of gear oil. I'm going to check the grease fitting on those hubs. I suppose I may not have caught them way back when. Any thoughts appreciated. Thanks.

 

[mctriumph]

It is not unusual for the ring/pinion to whine when old.I doubt your wheel bearing is bas as this
is not the noise they make, more of a low rumble.
If it is pinion noise, nothing will make it stop, not even STP.
I drove with such a diff for many years in my old 60. It never got worse or indeed ,changed in the next 17 years.
Mad dog

 

[CJD]

It sounds more like a tranny issue from your description. Here are some examples to help you diagnose...

Wheel bearings....bearings make a rumbling sound that changes with speed. The rumble will be there at all times the car is in motion, and will not go away if you shift to neutral while coasting.

Differential gears...these gears usually whine either when under power, or under coast, or both. It will be most pronounced at 30mph, 60 mph, and 90mph. If you shift to neutral while coasting, the whine will normally go away. When in gear, it will change tone significantly when accelerating and going off the power to coasting, and vice versa.

Transmission gears...tranny only makes noise in the gear that has the problem. Other gears will be quite.

Tranny bearings. Will make a rumbling or hissing noise, when the clutch is engaged. If you press the clutch to release it, the noise will go away.

 

[KVH]

OK thx I’ll go for a ride and see if I can better pinpoint.