Cleaning up the rear differential case

[Infinitiguy19]

This man (Original Poster) inspired me to clean up my spare differential: 90-q45-president-back-from-the-dead-build-t530329.html

I have tried various wire brushes but the rust is very hard to get rid of. I haven't tried spraying some evaporust on it yet because I am running low on it.

Does anyone have any tips for cleaning up the diff cases?

And one side flange has some play in it, Yet the other one has no play in it. Is that normal? It was dropped from a height of 2 feet...

[superuber]

My concern on dropping it would be did it bend a flange? I have two spare diffs and some play is normal. Are you talking back and forth play or side to side? As far as cleaning it sand blast it, or bead blast it. Gut it first of course.

[Infinitiguy19]

Well he cut the axle shafts (That connect to the flanges). The car was on its side when he did that...

The other thing is that I don't have all the tools to gut the differential so I need to either find a cover and a gasket or mask off the rear.

[Lokim]

Try a die grinder or electric drill w/ a little wire wheel.

[Infinitiguy19]

I may try a bead blaster but that would mean gutting the diff.

Any idea on what I may get into?

[superuber]

I had mine apart to put in a 4.08 from a z and its not rocket science. If you don't have the tools take it to someone who does.

[Infinitiguy19]

What I have trouble understanding is how would one remove the side flanges without the special tool called a axle stand. I can borrow a sliding hammer and make the drifts from pieces of pipe. But somehow getting a sliding hammer to grab the side flange is beyond me. And without those out then nothing further that can be done.

[Infinitiguy19]

As usual I feel like a idiot...

I thought of using some rope and a crow bar to get the side axles off. That didn't work well. Then I found some throttle cable (Bike cable) and they came off!!!

Now to get a sliding hammer and take off the ring gear!!!

I also notice the bearing caps are a little pitted which can't be good? Can they be resurfaced?

Man I wish they sold the viscous coupling separate and cheaper than the cost of a couple of used diffs.

I also feel I should replace the rubber bushings (Isolators) but I know they are not sold separate as well...Any ideas?

What about color? polished diff cover with a POR-15 painted diff case?

[Infinitiguy19]

Took off the side flange seals today, What a pain.

I notices that the ring gear has toe contact (Wear).

Is this what the Diff looks like when new?




I may call a dealer who has this in stock to see if they can send me pictures...

[OwnerCS]

Is that a differential for a TCS version?

[Infinitiguy19]

Yes sir.

[Infinitiguy19]

If you guys still care:

https://picasaweb.google.com/ppastos/19 ... directlink

[maxnix]

So you rebuilt it?

[Infinitiguy19]

I got it all apart. So far the only things that need to be done is cleaning the stuff and putting it back with fresh oil. And of course still clean the case.

Good to see you back Brian