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Separating turbo impellers....
Posted by: goatsnvairs ()
Date: November 27, 2017 10:10AM

Disassembling my turbocharger for cleaning and rebuild. Have the housings off and center unit isolated. Took the compressor impeller nut off, but the impeller is stuck to the shaft. Not sure if it's okay to press the shaft out of the impeller or not. Didn't expect it to be so tight. Don't think it's ever been apart, but turned nicely before I started disassembly. Can I use an arbor press on the shaft?

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Re: Separating turbo impellers....
Posted by: thewolfe ()
Date: November 27, 2017 10:25AM

You can use a press but you can also use heat. Heat the compressor wheel with a propane torch then quickly grab it with a rag and twist it off. This works most of the time unless you have a real tight one.

Nate Wolfe
Portland OR
65 Corsa 180

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Re: Separating turbo impellers....
Posted by: goatsnvairs ()
Date: November 27, 2017 10:30AM

Thanks, will try the heat first. Hate to be pressing on that thing and bugger up the threads or something. I was thinking maybe the oil seal on the exhaust side was frozen to the housing, but that wouldn't keep the compressor from coming off.....

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Re: Separating turbo impellers....
Posted by: The Stig ()
Date: November 27, 2017 10:34AM

I use heat as Nate suggests. Just keep the torch constantly moving. After a minute or so it will slide right off.

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Re: Separating turbo impellers....
Posted by: thewolfe ()
Date: November 27, 2017 10:35AM

It doesn't take much to press them out so I highly doubt you would ruin any threads. Some wheels have a slight press fit, others slide right on and off.

Nate Wolfe
Portland OR
65 Corsa 180

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Re: Separating turbo impellers....
Posted by: goatsnvairs ()
Date: November 29, 2017 09:16AM

Worked like a charm, with heat slipped right off. Now the carbon seal is stuck in there. Currently soaking more.....

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Re: Separating turbo impellers....
Posted by: thewolfe ()
Date: November 29, 2017 09:48AM

Once you get the snap ring out, the only thing holding the carbon seal assembly in place is the big o ring. It should press out easily.

Nate Wolfe
Portland OR
65 Corsa 180

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Re: Separating turbo impellers....
Posted by: jjohnsonjo ()
Date: November 29, 2017 03:36PM

Nate, it sounds like you have taken more apart than me. memory seems that earliest were pressed on, latest just snug.

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

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Re: Separating turbo impellers....
Posted by: thewolfe ()
Date: November 29, 2017 03:49PM

You may be correct. I just took apart an early and a late. The early compressor slid right off. The late took some heat to get off. The few e flow wheels I have installed just slid right on and off.

Nate Wolfe
Portland OR
65 Corsa 180

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Re: Separating turbo impellers....
Posted by: vairmech ()
Date: November 29, 2017 04:41PM

If you use anything to press on the carbon seal cover from the other side keep in mind that you are pressing on the carbon seal it's self.

I use my vise and open it up so that it is larger than the carbon seal cover and then flatly slap the center section on the vise jaws while holding my hand under the cover to catch it when it comes out. Practice slowly the first couple of times just to make sure you hit flat on the center section. If you hit anything but flat you will mark up the face pretty good.

I have never broken a carbon seal removing in this manner. Also keep in mind that there is a little o-ring under the carbon seal that needs to be changed. It is not that hard to do, You can use a socket that fits in the aluminum cover hole to tap the carbon seal out. You will need to use a vise to put the seal back together by pressing on the retainer ring ONLY. You need to be pretty square or you will ruin the retainer.

Ken Hand
Handy Car Care
248 613 8586

Vairmech@aol.com

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Re: Separating turbo impellers....
Posted by: goatsnvairs ()
Date: December 03, 2017 05:24AM

vairmech Wrote:
-------------------------------------------------------
> If you use anything to press on the carbon seal
> cover from the other side keep in mind that you
> are pressing on the carbon seal it's self.
>
> I use my vise and open it up so that it is larger
> than the carbon seal cover and then flatly slap
> the center section on the vise jaws while holding
> my hand under the cover to catch it when it comes
> out. Practice slowly the first couple of times
> just to make sure you hit flat on the center
> section. If you hit anything but flat you will
> mark up the face pretty good.
>
> I have never broken a carbon seal removing in this
> manner. Also keep in mind that there is a little
> o-ring under the carbon seal that needs to be
> changed. It is not that hard to do, You can use a
> socket that fits in the aluminum cover hole to tap
> the carbon seal out. You will need to use a vise
> to put the seal back together by pressing on the
> retainer ring ONLY. You need to be pretty square
> or you will ruin the retainer.
Will keep that in mind. After I got the impeller off the carbon seat did not want to come out. Soaking now, will try vice method tomorrow.

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