CUTLASS Humming noise at 60mph

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OldsMob_Chris

Not-quite-so-new-guy
Feb 3, 2020
12
9
3
Montgomery,Alabama
Looks fine from what I see in the pics.

Did you rotate the wheels by hand? Any noise from the wheel bearings or rear when you do that?

Just wipe out the bottom of the housing with a rag to get out all the sediment.

Put the cover back on and fill the rear from the side plug. It's a round threaded plug with a 3/8 square recessed head. Use a small 3/8 extension and ratchet to remove it and fill with gear oil until it spills out.

Then pull the driveshaft and inspect/replace the u-joints. That where my money is at for vibration you are hearing.
 

OldsMob_Chris

Not-quite-so-new-guy
Feb 3, 2020
12
9
3
Montgomery,Alabama
Looks fine from what I see in the pics.

Did you rotate the wheels by hand? Any noise from the wheel bearings or rear when you do that?

Just wipe out the bottom of the housing with a rag to get out all the sediment.

Put the cover back on and fill the rear from the side plug. It's a round threaded plug with a 3/8 square recessed head. Use a small 3/8 extension and ratchet to remove it and fill with gear oil until it spills out.

Then pull the driveshaft and inspect/replace the u-joints. That where my money is at for vibration you are hearing.
Yes, turned the wheel just a sliding sound from the gears it seemed normal... no grinding noise tho... drive shaft is snug, I checked It earlier... I’m headed to grab a new gasket and oil now, will check U-joints when I get home. Thanks so much for your help man !
 
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