Turbo failure and dissection - Ford Powerstroke Diesel Forum
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Old 07-28-2013, 06:43 PM
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Turbo failure and dissection

Well I took my turbo apart. I've never taken any other turbo apart before and some things could have gone better. lol

Mine made a nasty whining sound when I started it up at the end of april to jump a neighbor's car. I didn't hear the whine prior to that. The last drive I took before that was when I had just retuned to the newest update from h&s for lower boost at WOT. It was too late for my turbo.

My turbo seemed to be ok when I first got it off. There was no noticeable metal in the tube leading out of the compressor housing, probably because it was run very little with it rubbing. At first I thought the rubbing must have been on the exhaust side. It wasn't. It was on the intake and I know why it happened that way now. I'll explain a little later.

I'm just going to make a bunch of posts with pictures attached so I can be clear about which picture I'm talking about. Here is a picture of the turbo after I got it out. It was leaking oil where the vgt solenoid goes into the housing.
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Old 07-28-2013, 06:45 PM
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Here is a picture of the outer compressor housing that shows where the compressor wheel was rubbing. It's where the black crap from the oil vapor was rubbed off.
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Old 07-28-2013, 06:46 PM
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Here is a picture of the compressor wheel with the outer cover removed.
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Old 07-28-2013, 06:48 PM
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Here's where I started to get mad. Look how teeny tiny that shaft is. What a joke.
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Old 07-28-2013, 06:49 PM
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Here you can see a tiny metal burr on the edge of one of the compressor blades. Further proof that it was rubbing here.
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Old 07-28-2013, 06:51 PM
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Here is what you see when you take the turbine housing off.
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Old 07-28-2013, 06:52 PM
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This picture shows a small crack in the casting that is pressed on over the turbine. I don't think this had anything to do with the failure, just shows more lack of quality in these turbos. It's kinda hard to see, but it's right by the pin.
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Old 07-28-2013, 06:55 PM
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Now I've removed that housing and this shows the vgt fins. The pressed on housing, the fins, the ring that moves the fins, and the arm that moves the ring are all stainless steel according to a magnet. The same material (by looks and the magnet) is used to make the turbine wheel.
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Old 07-28-2013, 07:00 PM
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I have the tiny shaft a smack with a hammer and out popped the turbine and shaft. What came out surprised the hell out of me. Ball bearings! The balls are very light, don't stick to a magnet, and are dark brown. More on these next.
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Old 07-28-2013, 07:01 PM
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Here's the hole the turbine shaft came out of.
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