Turbo Rebuild Question/Confusion..
 

So I started the rebuild of my td04h-15g and I ran into a situation.

It doesn't seem to have one of the two O-ring's (missing #10) . There is absolutely no evidence of one being there. I understand that sometimes the o-rings can breakdown, but can they be completely removed through time and leave no trace? Is that a "thing"?

Also, the rebuild kit I purchased comes with the O-ring (#10), and it doesn't fit at all. I've tried working in there multiple ways, its a no go. (Haven't tried cooling o-ring to get it to fit, if that would work)

Arrow is pointing to where the O-ring should be.

https://cimg7.ibsrv.net/gimg/www.mia...e19ba52a54.jpg
This is the parts diagram I've been following. (Maybe this is wrong?)

https://cimg9.ibsrv.net/gimg/www.mia...7b2470ca1b.png

Should I just reassemble without the O-ring? Or have any of you rebuilt one of these before?
Any help would be greatly appreciated.
(Also I'll be at work today, so I wont be able to respond until later today.)

It doesn't go in the groove right below the one you gave marked with an arrow? And no, that oring cant really disappear w/o a trace.

looking at pics from when I did mine, I don't recall anything being there.

IMAG1049_zps89336543.jpg Photo by hi_im_sean | Photobucket

are you sure thats the right exploded view? the h, l and hl are all a bit different, and then there is flat back and super back. Maybe some had that oring and some didnt. Not totally sure, but hope that helps.

fuk is that an oring in the lower groove? lol
http://i222.photobucket.com/albums/d...d.jpg~original


edit- OK i should have looked through my whole album before posting

lower groove, o ring
http://i222.photobucket.com/albums/d...ps885bce22.jpg


doubled edit- looking at OP pic again, your old one is still there. Shit was playing tricks with my eyes, its early, need coffee.

AHHH thank you! I see it now in front of me, and the oring that I got with the rebuild should fit.

Actually have another question.
While piecing it back together, and also running out of time, I got to this point.

https://cimg4.ibsrv.net/gimg/www.mia...f1be60fc95.jpg

- Everything is centered and spins freely in this position.
- Gap is consistent all the way around.
- Could possibly close distance by using large (rubber) hammer and applying force evenly.
- Can also try to sand more of the corrosion away, but most of it's already been cleaned off.
- Collar goes around this, but doesn't seem to 'close' the gap.

Is this supposed to have this gap or do these two surfaces have a flush mate?
Just want to know before I go and try to get them to mate flush and maybe break something..

They're tight, I beat the hell out of mine with a mallet, evenly. There will be what appears to be a small gap which is actually a chamfer, but from what I recall, that gap is way too big. Pretty sure the turbine housing face should bottom out on the center section.

I did some research last night, and what you said aligns with what I found.
The gaps supposed to about 1/2 of the one pictured, so time to start swinging.
Thanks for the useful tips!