…OK, not gonna lie, cleaning that case lip was a pain in the ass.
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But I wanted that surface to be absolutely clean; spend the time and effort now so it’s one and done. Spent a fair bit of time degreasing and cleaning all the holes for the mounting hardware too, and used Locktite Red since I shouldn’t ever have to remove these fasteners now that I have a cover with fill and drain ports.
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If I do need to remove ‘em, a little heat will take care of it pretty easily.
At any rate, once I got it all buttoned up, I put in 3 qts of 75-90 gear lube, then pulled it onto level ground for the last little bit.
I honestly expected it to be full, and start dribbling out when I pulled the lower fill plug, but mine took a couple ounces from a 4th quart before it overflowed the fill port.
Double checked for leaks or any obvious missed bolts, etc. and took it for a couple of miles test drive, going up and down the steepest hill in our neighborhood in the process.
All good!
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Only thing I’m not happy with is that little bracket above the diff that holds the brake lines. It’s bolted down securely on the top, but there’s a tab that hangs over the front of the diff that used to go over a small stud on the cover.
However, the new ARP fasteners obviously don’t allow that, so I’ll go back in there and use a cutoff wheel on a Dremel to remove that little lip/tab that hangs over the front of the diff cover.