Re: front diff part help, ASAP (do not move)
Well, I got the front diff back out of my truck, as well as the 89 blazer on won on eBay last month.
After I cracked my case open, I was greeted with all sorts of metallic particles in the oil, after only putting about 80 miles on it. There was a good bit of slop in the gears, which means the lash was never properly set, or the bearings were never fully pressed and over those 80 miles, pressed themselves on, thus making everything loose.
The oil leak came from the drivers side of the unit. I couldnt determine if the RTV they used to hold in the cover plate was leaking or if it was the actual seal for the hub itself. Well after having my dad give me a second opinion on it, he noticed the seal itself was not seated evenly so there was no doubt in his mind that it was the cause of the leak.
As far as the metallic particles, well they are steel particles, not aluminum so it narrowed the hunt down as to what to look for. The only thing I could find worn was one of the adjusters which the bearing race sits on, however there are no signs of the race itself spinning, so that must have been from when it went the first time. The only other thing that it could be from is the ring and pinion itself. Since there was a ton of slop in the unit by the time I pulled it, im sure the gears just wore the hell out of themselves through inproper adjustment thus leaving little pieces of steel in the oil.
Ive been documenting all my work for both the guy at the shop as well as my credit card company, so when I get them uploaded this evening, Ill post them up.
Oh yeah, and as far as those retainers, even one of them on the blazer diff was bent and looked like it was on its way out, so I think im going to fabricate some newer heavy duty ones if anyone is interested since you cant get them from GM without spending $200.