Sterling 10.25 blues

Luda-Chris · Apr 9, 2022

I’m kinda piggybacking off my post about chasing an OD light in my 92 F250. Popped off the differential cover to check out the tone ring, which looks like it has a couple burrs on some teeth. Found metal chunks in the sump. I’m guessing this is what damaged the tone ring. Ring and pinion look good, no obvious gouges or chunks missing. I’ve attached a couple pictures of the chaos. Are these chunks from the limited slip?

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Luda-Chris · Apr 9, 2022

More carnage

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94turbocrewcab-lb · Apr 10, 2022

Did you service this axle once in awhile? Fluids and make sure it’s filled?

Luda-Chris · Apr 10, 2022

94turbocrewcab-lb said:
Did you service this axle once in awhile? Fluids and make sure it’s filled?

This is the first I’ve been in it since I bought it a couple years ago. It’s obviously been neglected. What are the chances the pinion bearings look like this? Driver side differential bearing is shot, passenger side looks new.

I still can’t figure out where the metal chunks came from. A theory I have is that previous owner had an issue and repaired it but left this crap in the bottom of the housing.

94turbocrewcab-lb · Apr 10, 2022

I’d probably look for a replacement axle...and then just rebuild the old one if you felt like it.

Luda-Chris · Apr 10, 2022

94turbocrewcab-lb said:
I’d probably look for a replacement axle...and then just rebuild the old one if you felt like it.

Certainly an option at this point. What a pain in the ass lol

u2slow · Apr 10, 2022

Maybe its metal shed from the pinion bearing?

I would be changing all the bearings since you're in there. You may need to shim it differently... I blindly did bearing re&re on a dana 70 once, and there was no carrier pre-load with the new bearings and the same shims. The housing had worn.

Luda-Chris · Apr 10, 2022

u2slow said:
Maybe its metal shed from the pinion bearing?

I would be changing all the bearings since you're in there. You may need to shim it differently... I blindly did bearing re&re on a dana 70 once, and there was no carrier pre-load with the new bearings and the same shims. The housing had worn.

There’s just too much metal to be from the worn bearings. The bigger piece is there is concave. Someone has suggested it might be a washer from the spider gears or from the LS clutch pack but everything looks intact

u2slow · Apr 10, 2022

I considered it might be a chunk of pinion bearing cage...

Luda-Chris · Apr 10, 2022

u2slow said:
I considered it might be a chunk of pinion bearing cage...

I’m able to get a good look at the pinion bearing and it’s intact. I’ll look again this week but I'm leaning towards a retaining clip for the clutch pack slipped out and got mangled. I’ll keep ya posted

Jesus Freak · Apr 10, 2022

I don't know anything about it, but when I get my '87 tow truck on the road and lay up my '86 dually this is one of the things I plan on confronting. There's no telling what's in my pumpkin. Please keep us posted on the progress and findings.

Jesus Freak · Apr 10, 2022

Luda-Chris said:
Certainly an option at this point. What a pain in the ass lol

My junkyard friend has a 3:55 I might get and redo, instead of messing with the 4:10. Whatever I decide, I'm going through the booger!

Luda-Chris · Apr 14, 2022

Jesus Freak said:
My junkyard friend has a 3:55 I might get and redo, instead of messing with the 4:10. Whatever I decide, I'm going through the booger!

The metal was from a clutch pack guide on the limited slip. Waiting on parts now.

IDIBRONCO · Apr 14, 2022

I'm glad you found that problem.

Jesus Freak · Apr 14, 2022

Yeah, good deal. Of all the stuff I've worked on, I haven't yet did a differential. It's coming though.

Sterling 10.25 blues

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