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Turbo Rebuild Question/Confusion..

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Old 10-07-2017, 08:39 AM
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Default 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.


This is the parts diagram I've been following. (Maybe this is wrong?)



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.)
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Old 10-07-2017, 10:39 AM
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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.
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Old 10-07-2017, 10:44 AM
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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.
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Old 10-07-2017, 10:46 AM
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*** is that an oring in the lower groove? lol



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

lower groove, o ring



doubled edit- looking at OP pic again, your old one is still there. **** was playing tricks with my eyes, its early, need coffee.
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Old 10-07-2017, 06:58 PM
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Originally Posted by hi_im_sean
*** is that an oring in the lower groove? lol



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

lower groove, o ring



doubled edit- looking at OP pic again, your old one is still there. **** 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.
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Old 10-15-2017, 01:45 PM
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Actually have another question.
While piecing it back together, and also running out of time, I got to this point.



- 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..
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Old 10-15-2017, 08:33 PM
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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.
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Old 10-16-2017, 10:13 AM
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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!
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