85 250sx rear end noise

[Deere]

Greetings!!

I have a 85 250sx. The rear end is making some noise. I can see where it has been pulled apart before, and resealed on both tube ends and differential.

The deal is that it makes a slight squeal or high pitched groan, when you push the bike back and forth slowly. It does not make any noise on a jack running in gear, just at a near rest.. It almost sounds as if the diff were dry and seems a bit stiff.. the diff oil has been changed, and there was no metal in it. I think it is emananting from the diff, and not the wheel bearings, but not 100% sure. Otherwise it runs and drives normally.

I compared it to my other 85 which is quiet, and seems to turn more easily.

What do you all think?. recommendations?

Thank you!!

Mike

[Silverado]

My sx did that before...at very very slow slow movement there was a slight squeal I would listen to it with the engine off while pushing it on the lawn. I changed the back wheel bearings and the problem disappeared. If you think your differential is dry sounding but you already put in 100cc of SAE 80 I would think it is your bearings......though someone can pipe it...what does a universal joint sound like when it is going ? Could it be that ?

[Deere]

Thank you. Yes, that is exactly what I'm hearing. Hopefully, when I can, I'll change them out and hope for the best!!

[Thorpe]

Maybe trying pulling the brake drum off quick, and roll it back and forth. (Quick check to make sure its nothing in there...)

[not-a-virus.exe]

^^ my uncle has that same bike and his brakes make that same noise and so do his front bearings

[Frankencelery]

Yep, I had the same thing two years ago on my 250sx. It started off slight, and turned really nasty a while later. It was the wheel bearings.