p-32 front hub

[Rinkydink]

Symptom- Right front rotor has runout measuring 8/1000's. This is after replacing parts because the assembly overheated and basically locked the front right wheel.



I replaced rotor, caliper, brake line, races & bearings. The only thing I did not replace was the axle & the hub which leads me to the first question:

 
?1. Does anyone know where to purchase a replacement hub?? Apparently Workhorse discontinued it and I can't find an aftermarket anywhere!


I believe the hub is the issue because I removed the rotor and reinstalled the hub without the rotor and mic'd it front and back. It's the same 8/1000's front and back. I've double checked that the races are seated properly best I can tell. (I've now reassembled that wheel so many times, I can do it with my eyes closed.. or I'm missing something over and over!)     

?#2 If I cannot find a replacement, can the existing hub be machined?
?#3 Can a correction plate be used between the rotor and the hub? If so, where do I get one? (looked for that as well)

Final thoughts/questions... the assembly did get very hot. How likely is it that the hub itself was damaged? it's a solid "chunk" of iron. The only other part could be the axle... is that even possible? I have no idea how to measure/check for that. I would love any input/thoughts... especially if there is a replacement hub out there somewhere!

Thanx guys!!

Mike

[RockwoodMike]

I have looked on Ebay and Rockauto ..Nothing!! Everyone and their cat has a rear hub..

A good machine shop should have no problem to chuck it up in a lathe..8 thousands is just a skim cut.. ..What about the axle shaft itself

? Does it have any blueing on it where it got hot too??

[RockwoodMike]

https://www.partsgeek.com/catalog/1999/chevrolet/p30/brake/brake_rotor.html?rp=brake_rotor_and_hub_assembly

I think the reason the hub itself is no longer available is they replaced it with a one piece unit that has the rotor and hub together..

[RockwoodMike]

https://www.rockauto.com/en/moreinfo.php?pk=3869205&cc=1353596&pt=1896&jsn=997

[Rinkydink]

I have looked on Ebay and Rockauto ..Nothing!! Everyone and their cat has a rear hub..

A good machine shop should have no problem to chuck it up in a lathe..8 thousands is just a skim cut.. ..What about the axle shaft itself

? Does it have any blueing on it where it got hot too??

No on blue axle shaft... the binding was at the caliper/rotor. Rotor overheated as did the hub, and the bearings that I replaced had some discoloration,  but really think the axle is fine.

I'm leaning machine shop. Thanks!

[Rinkydink]

https://www.partsgeek.com/catalog/1999/chevrolet/p30/brake/brake_rotor.html?rp=brake_rotor_and_hub_assembly

I think the reason the hub itself is no longer available is they replaced it with a one piece unit that has the rotor and hub together..

I've seen these... but I need a 5 bolt hub. If there's a 5 bolt, maybe it works. Something to look into.

Mike

[RockwoodMike]

with these links, you are buying a hub and rotor combined into one casting..This new part replaces your

individual hub and rotor..

[Rinkydink]

with these links, you are buying a hub and rotor combined into one casting..This new part replaces your

individual hub and rotor..

Yes, but they show 8 wheel studs... existing only has 5... unless my rim as extra holes, (I don't remember) don't think I could mount the wheel.

[Rinkydink]

Just looked at a pic... my wheel does have multiple mounting holes!!!

Maybe the once piece assembly will work!

I saw them, but was looking for an exact replacement. Will dig deeper,

Thanks!

[RockwoodMike]

looking down at your tire, it has 8 lugs !!

The 5 lugs are what bolt the hub to the rotor..

The new one piece casting available everywhere does not have the 5 bolts because the rotor and hub are cast into one piece..

[RockwoodMike]

Maybe I am wrong..

[RockwoodMike]

https://www.youtube.com/watch?v=36LCRRFMGNw

Is this what your hub looks like?

[RockwoodMike]

I think you are S.O.L.

[RockwoodMike]

If you are going to try the machine idea, maybe you should also get it magnafluxed ..Check it for cracks..If it got that hot to warp, cracking it might be a possibility

[Rinkydink]

https://www.youtube.com/watch?v=36LCRRFMGNw

Is this what your hub looks like?

Yes, that's it.