Some interesting pics...
So I finally got around to cutting apart my old rear axle and making my rear diff mounting plate to hold it in my workbench. I took some interesting pics of the axle and diff I thought I'd share with you all.
First, I heard a snap while trying to pry the actuator off the housing, and when I got it off, I found this.
Ouch. I pulled it apart a bit and took a closer look at the fracture surface and found somethings interesting...
Can you see it? There is surface corrosion on the fracture surface most of the way through the thickness of the piece. So it wasn't really my fault it broke as it was already corroded most of the way through. That's kind of a relief, except for the fact that I still have a broken piece.
Here is the outside face of the actuator plate (this is the part that faces the differential housing).
You can see there is a great amount of material loss on the right side. There was alot of junk jammed in between the actuator and diff housing when I took it apart. Lots of corrosion here. Here's the other side of this plate, zoomed in on the corroded area.
It looks like it has actually cracked here. Can't say for sure since there is so much corrosion all over it.
Here's is what the inside of the actuator housing looks like.
Actually looks pretty clean. There is very little grease left, and what is there is super thick and dry, and there is some sand in there.
That's it for the diff actuator. I did take some pics of the inside of the axle housing after cutting it apart. Here is a close up of the main pinhole I patched in the diff housing.
I was surprised that I couldn't really see any other pinholes from the inside despite the fact that I found some from the outside and patched them. I could definitely see some spots that were very thin. It also showed the problem with these things to begin with. The diff housing part (the pumpkin) is a pressed plate that is welded on and is significantly thinner than the rest of the axle. They could have solved this problem by simply using a thicker piece of stock metal.
Here is an overall of the diff. This is after having sat in my basement open for almost a year. For as terrible as the outside looks, the inside looks pristine. I can see the marking paint from when the diff was first set up at toyota.
You can also see here the part of the axle housing I cut off to make the diff mount for my workbench.
So with the broken components, I won't be cleaning this thing up and selling it as a whole unit. As I said, the insides look absolutely pristine, and while the outsides are rusty, they aren't really that bad expect for some of the locker bits. The diff carrier has some rust, but would clean up fine (It's super thick). When I drained the diff fluid the first time, there were no chucks whatsoever, just a shiny goo on the magnet.
So anyway, if anyone out there needs some parts for a locker, drop me a PM and will part the thing out. It's 4.3 gears.
Hope you enjoy the pics.