I never thought I'd ever be saying this, "Thank Gawd for JiffyLube." I took my new 99 F350 into JiffyLube for an oil change and during their gazillion point check process they discovered that the cover on the front differential was bent and appeared to be leaking oil. Not good, since I just bought the truck and it had previously been sitting for 3 years, dented cover and all. JiffyLube pumped in 3.2 quarts of gear lube into the differential. The rear differential tool 3.4 quarts.
So I went to Summit and bought a couple of cheap covers and a bunch of Lucas gear oil.
I have noticed a significant amount of oil underneath that differential. Not pouring out, but certainly enough to drain it dry over the 3 years the truck was sitting.
So while I was underneath the truck drilling and tapping a hole in the exhaust manifold for the egt probe, I went ahead and popped the cover off the diff.
Sorry for the bad picture, but all I had was my phone. However, it's clear that I have issues on both sides of the gear teeth.
So how hard is it to do the gears on one of these? I've got lots of experience with setting the lash on spur gears, but I've never done a set of spiral bevel gears.
Anyone have a good source for gears they could point me to?
Anyone know of a good source for instructions on how to lash these?
I shudder to think about what I'm going to find when I pop the cover off the rear diff.