Rear end noise

[Tim64]

Hey Guys,
I've got a whining noise coming (I think) from my rear end. Mainly when making a big sweeping right turn like gettin off the highway. It has oil in it. Any ideas? If I need to replace something in it would it be easier to buy the entire thing? What would work in my 63? Lot of questions I know, but I know no better place to ask them.
Thanks,
Tim

[63sbssbbw]

Doesn't that Fatblocker do that to you?
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Sorry Tim,couldn't pass that one up LMAO

[billydonn]

Originally Posted by Tim64

Hey Guys,
I've got a whining noise coming (I think) from my rear end. Mainly when making a big sweeping right turn like gettin off the highway. It has oil in it. Any ideas? If I need to replace something in it would it be easier to buy the entire thing? What would work in my 63? Lot of questions I know, but I know no better place to ask them.
Thanks,
Tim

I would fix it, not swap it out. It could be something like a rear wheel/axle bearing... or it could be need for new carrier and/or pinion bearings, or even worn out gears. You must take care of it soon for safety sake. I would start by opening it up and replacing both wheel/axle bearings and doing an inspection. Do not loosten/remove the carrier bearing caps unless something is obviously wrong there. If nothing is obvious, replace wheel/axle bearings and see if that fixes the problem.

I'm assuming 12 bolt and 1/2 ton truck. Others may have more specific diagnostic ideas.

[HotRodYJ]

Jack it up on jack stands and run the truck in gear at idle. Then you can roll around underneath the truck and listen at each bearing location with a stethoscope to see what condition each bearing is in. If you don't have a mechanics stethescope, just use a screw driver held up to your ear. The vibrations travel thru the screwdriver and you can hear a bad bearing this way and know for sure what is bad before you tear anything apart. A bad bearing will be noticeably louder and rougher than the others. Oh and make sure your using good jack stands and not the cheap ones.

[64GMCHorsepower]

I would hope it's the pinion bearing, and not the gears themselves.....Thats a little cheaper to fix.....still a pain in the butt though....

Does it happen just turning right?

Take the left axle out and check/replace the bearing......

Also a pain, but cheaper than a rear end..

And what HotRodYJ said.....use good jack stands.......



That should be fairly easy to figure out...
good luck.

[greg64]

Besides the bearings I had a broken washer behind one of the spider gears. You'd have to pull the c-clips and axles to check these.