Differential hub temp ??????

[Philv]

Ok, I just resealed my axle. 11.5" and today I checked the hub temps. After about 15 min at 65 my left hub was 115ish and my right was 140ish. Is this normal or could the right be too tight? I adjusted them like a shop and all the videos say. Had decent drag, no lateral movement, idk it's starting to worry me.

 

[IOWA LLY]

Probably got it to tight.


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[Philv]

If I loosen it to the next notch, then I end up with play in the hub.

 

[IOWA LLY]

Hmmm. That’s odd. Shouldn’t be able to feel any play.


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[Ridin'GMC]

Double check if the brakes are not sticking. That can affect the hub temperature. I've had a sticking caliper made my hub smoking hot and the rim was 275 degrees.

 

[Philv]

Am I going to burn up the bearings at 140-150? I can't do anything about it until tomorrow after work.

 

[2004LB7]

Bearings will run just fine at those temps. See what it is after putting a few miles on it (of course making sure your brakes check out)

The bearing and hub tolerance may have contributed to the difference in tightness. I wouldn't worry unless it was pushing past 200-250* or so and didn't get any better after breaking it in

 

[Philv]

Thanks guys. I'm the type of tech that works with specs. And I couldn't find any specs on doing this except torque, loosen, hand tight. I need measurements to be certain it's right.lol tomorrow I'm going to get caliper temps, hub temps, and put it on the rack and inspect.

 

[Chevy1925]

your rear diff is going to see 240-250* temps when pulling heavy and under heavy throttle up hills in hot temps. i wouldnt even be concerning myself with 25* temp diff between the two hubs....

 

[jlawles2]

Double check the fluid level in the diff. Might even try jacking up one side at a time to ensure that fluid had made it to the hub.

When I did the seals in mine, they were only lasting about 30k miles. last time, I replaced the bearings, and jacked back side up to ensure oil was in the hubs. I thin I might have even put oil the the hub before stabbing the axle to help ensure that oil made it to the seal to keep it from chewing itself up.