excessive ring gear run out

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Joined
Jan 17, 2024
Messages
7
Location
Temple City, CA
Is it a remedy for excessive ring gear run out (0.005 [measured 70,000 miles ago] when the specified max. is 0.0028) by replacing original side bearings with 266,000 miles on them, but never abused in any way, with new bearings?
 
I would think ring gear runout is the part itself or the carrier it is mounted to? What are you doing, refreshing a high mileage diff?

If it all looks good and ran that long already without unusual wear, I don't think it's an issue worth buying expensive parts for. JMHO

Shoot ZUK an email if you want an answer from a very experienced Toyota diff expert. gearinstalls@gmail.com
 
Thanks

Can you say what causes ring gear runout?

Is there any way to fix ring gear runout other than replacing the parts?

Bad installation can cause it. I had a 7.5 IFS ring gear "bent" by a poor installer back in the 90's
 
Bad installation can cause it. I had a 7.5 IFS ring gear "bent" by a poor installer back in the 90's
Thanks, but in this case the install was done by toyota and after 195,000 miles I'm thinking wear and tear somewhere, I was thinking maybe the side bearings.
 
I would think ring gear runout is the part itself or the carrier it is mounted to? What are you doing, refreshing a high mileage diff?

If it all looks good and ran that long already without unusual wear, I don't think it's an issue worth buying expensive parts for. JMHO

Shoot ZUK an email if you want an answer from a very experienced Toyota diff expert. gearinstalls@gmail.com
Thanks, I have just emailed ZUK. And yes, I guess refresh is a good way of putting it.
 
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