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Your opinion on this differential wear pattern?


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nehuge
New User

Oct 1, 2022, 9:11 AM

Post #1 of 5 (304 views)
Your opinion on this differential wear pattern? Sign In

Hi there, have a Dana 80 axle and just wondering if the wear pattern after a rebuild looks to be set up decently? A shop had done it 1,000 miles ago and I followed the break in procedure. They are now, well, 1,000 miles away so not worth me going back to them if this new break-in needed adjustment.

Here are some videos too of the number of particles during its first oil change after the new gear break-in. Opinions?

https://www.youtube.com/watch?v=4-LkjhNX0RY

https://youtube.com/shorts/9eXziArWgUo?feature=share

https://www.youtube.com/watch?v=VqTbRH_vNFg


Also, how do I tell by looking at it if I have an LSD or not? The dog tag on the axle doesn't show an "L" code but still...also I'm not in a position to lift both wheels off the ground to see if one spins opposite of the other. Trying to see just visually how one would know.
Thanks guys!


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Oct 1, 2022, 9:31 AM

Post #2 of 5 (301 views)
Re: Your opinion on this differential wear pattern? Sign In

#1, what is this thing?
If you don't even know if an LSD - what's the point? Go somewhere and have the gear oil changed if suggested is not the same if LSD or not. Never heard of this if machine work done right it never needed more??

Tom



nehuge
New User

Oct 8, 2022, 9:57 PM

Post #3 of 5 (234 views)
Re: Your opinion on this differential wear pattern? Sign In

#1, it is a Dana 80 axle.

I'd like to know if it is an LSD so I can add friction modifier in it or not.

I'm asking if the machine work was done right, does the wear marker/pattern look aligned correctly?


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Oct 9, 2022, 3:24 AM

Post #4 of 5 (224 views)
Re: Your opinion on this differential wear pattern? Sign In

There are so many versions of those for trucks usually IDK what was done to it.

If you just ask for gear oil for it see what a parts store says or better if redone some would have paint on larger gear with cover off show where it's centered.

Other is hoist that axle up (they were used front or rear!!) spin the wheels with whole axle off ground in neutral see if the other side spins the opposite way or the same.

Opposite should mean it's NOT an LSD diff/axle.

There should be a inverted square bolt* usually part way up to check oil level if a bent Q-Tip touches gear oil it's full enough. You fill into that also may need to remove cover gasket or just a sealer used IDK how this was done to drain it all out if no obvious drain plug some custom cover?

That fill or check bolt will usually be 3/8th use a socket extension.

That or just take it somewhere ask to take a look and new gear oil just anyway be done with this,

Tom



Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 9, 2022, 5:28 AM

Post #5 of 5 (220 views)
Re: Your opinion on this differential wear pattern? Sign In

I don't understand why there is any confusion on whether this is limited slip or not. You already have the cover off. Simply look to see if it has clutches or not. If you see springs and clutches in the center of the differential, it is limited slip. If all you see is spider gears with a center pin holding them in, then it does not.



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