[Diy_efi] some pictures...

The AirHawk airhawk
Tue Jul 4 03:50:51 UTC 2006


> Ok next question is which end of the shaft it goes on... is it possible it goes on from the 'thin' 
> (intake) end ?

Yes. The turbine is Inconel or some other hard-as-hell metal that was friction-welded to the shaft. 
Don't attempt to remove it, and do what you can to NOT flex any of the blades. One chip, and you 
might as well toss it to the scrapper.

> if not, how on earth do I remove the exhaust turbine from the shaft?
>
> I dont want to damage the central part of the shaft since the bronze sleeve goes on there.

As someone pointed out - remove the bronze sleeve, then a bit of judicious grinding on that bearing 
race will cause it  to come apart. Don't worry about damaging the race, it's trash. If you're good 
with a bluetip wrench, it will be quite easy to remove it. I'd say the shaft is likely quite nearly 
as hard as the bearing race, the wheel is probably harder (and an order of magnitude more brittle).

Go Gently with any hammers or vises around that wheel.

> What 'kind' of turbo is this anyway? I thought they were either ball bearing or floating sleeve - 
> this is both?

I don't know - exactly what *is* the turbo? Garrett? Mitsu? Hybrid?

Likely the ball-bearings went the way of the exhaust.

Re-assembly *probably* goes something like this: Turbine Wheel, seal, press-fit bearing, sleeve; 
assemble into cartridge with care not to bind bearing and/or damage seal; compressor-end bearing, 
seal, thrust washer (if any req.), compressor, locking nut; torque to spec.

That is a *VERY* general description of the likely re-assembly for this turbo. I strongly urge you 
to seek more information from the manufacturer. A backyard rebuild is possible, and has a 
high-probability of success if undertaken with the full knowledge of WHAT you are attempting.

Clean, clean, clean. That is the word of the day, should you decide to attempt your own re-man.

-Scott Creech 






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