Jeep back on the road and started the break-in for the rear gears (finally). Used the champion 80w90 that Northridge sent with the Yukon gears.
69 kms with no rear shaft installed so no drive load on the gears. Easy driving short trips with cooling.
New rear drive shaft installed as I was doing a long arm kit and did the rear shaft at the same time.
32 kms 1st cool, 43 kms 2nd cool, 20 kms 3rd cool, 28 kms 4th cool, 13 kms 5th cool, 31 kms 6th cool
So 69 kms without rear shaft and 235 with rear shaft in. Checked the fluid level and the magnetic drain plug had a fair amount of metal shavings on it so decided to pull the cover and put clean fluid in.
Pics attached of the old oil that came out and the drain plugs on the arb diff cover. Seems like a lot of metal, especially on the drain plug, thoughts anyone?? Is the color of the oil ok?
Pics attached of the gears which I am not sure look good or not, there is a light step I can just barely feel with a pick on both the coast and drive side of the gear by the root of the tooth. Is this ok? The wear pattern is very obvious on the coast side of the gear in the pics.
Also wondering if the wear should be further down closer to the root of the tooth?
There is also a mark on each tooth coast side about 1/3 from the outside which seems really strange that can be seen in the pics (it's a bit hard to see in the pics but was obvious when I looked at the ring gear).
New oil put in, Lucas non synthetic 85W-140 as the local parts store had it and I saw it recommended on east coast gears site for break-in.
Pics in next post