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Old 24-08-2011, 11:20   #1
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Turbo Charger Cleaning Tips ?

any advice on getting a turbo assembly that is gooed up to run freely?

not too much carbon build up in the housing but does not turn freely,suspect carbon and burnt oil on the internal bushes and spindle.

is this a job for a specialist!

any tips/advice before i proceed and dismantle it?

thanks in advance!!
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Old 24-08-2011, 11:38   #2
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Re: turbo charger cleaning?tips?

Take pix to remind you how it goes together, no matter how simple you think it is or how obvious it looks right now, a few days will change that

I use a dot punch to mark adjacent points of the two halves so they go back the same place.
Remember that even the scratches from a wire brush will cause damage and encourage new carbon to build in future
Clendliness is everything. Treat O rings as though they were the insides of your eyes and dont be fooled into thinking its only for experts

good luck
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Old 24-08-2011, 11:44   #3
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Re: turbo charger cleaning?tips?

Quote:
Originally Posted by anjou View Post
Take pix to remind you how it goes together, no matter how simple you think it is or how obvious it looks right now, a few days will change that

I use a dot punch to mark adjacent points of the two halves so they go back the same place.
Remember that even the scratches from a wire brush will cause damage and encourage new carbon to build in future
Clendliness is everything. Treat O rings as though they were the insides of your eyes and dont be fooled into thinking its only for experts

good luck
any idea on the best solvent for carbon,currently using oven cleaner(sodium hydroxide)
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Old 24-08-2011, 11:45   #4
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Re: turbo charger cleaning?tips?

Brake cleaner...but of course disassembled and not when the engine is running. Put some light oil on the shaft before reassembly.
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Old 24-08-2011, 11:49   #5
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Re: turbo charger cleaning?tips?

will try that thanks
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Old 24-08-2011, 12:00   #6
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Re: turbo charger cleaning?tips?

Quote:
Originally Posted by anjou View Post
www.amy-artimis.blogspot.com/ Worth a read if you have time.
Neat bed !!!
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Old 25-08-2011, 06:12   #7
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Re: Turbo Charger Cleaning Tips ?

I was wondering when you would rejoin the forum Anjou... Welcome back.
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Old 25-08-2011, 07:07   #8
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Re: Turbo Charger Cleaning Tips ?

Tspringer went through some serious issues with his engine arising from efforts to "clean" his turbo. It might be worth reading through his thread at Yanmar Smoking and Making Oil

FWIW...
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Old 25-08-2011, 07:32   #9
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Re: Turbo Charger Cleaning Tips ?

We used to use coconut husk as the blasting medium to clean the turbine assembly.

An automotive type de greaser for the outside housings and air dry thoroughly. Use a lint free cloth and inspect with magnifying glass before reassembly.

ps, loving my big bed all to myself but still not getting much sleep because so much light comes through the over bed hatch

Must update blog
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Old 25-08-2011, 12:50   #10
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Re: Turbo Charger Cleaning Tips ?

spindle free now in the housing,but heat sheild sticking so cant get the turbine side of things seperated from the exhaust body.....soaking in penetrating oil.....more to follow.

looks like it wount be nessacary to dissasemble oil/bearing housing.
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Old 25-08-2011, 13:39   #11
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Refurbishment of turbos even internal cleaning is a job for a proper turbo house. The system needs professional cleaning and then balancing and recertification. Tolerances are way to small for the amateur.

Dave
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Old 25-08-2011, 13:57   #12
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Re: Turbo Charger Cleaning Tips ?

was quoted £260 pounds today,thats about $350plus carrige,and since im not disassembling the whole unit,only the exhaust centrifuge to remove carbon/rust,i will live with the consequences.
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Old 25-08-2011, 14:40   #13
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Quote:
Originally Posted by atoll
was quoted £260 pounds today,thats about $350plus carrige,and since im not disassembling the whole unit,only the exhaust centrifuge to remove carbon/rust,i will live with the consequences.
I suspect you will not went it fails and takes the engine out. !

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Old 25-08-2011, 19:06   #14
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Re: Turbo Charger Cleaning Tips ?

I had our turbocharger off a couple of weeks ago (Yanmar 75hp). It's an IHI. It was frozen up, not turning. I only partially disassembled it - it became obvious that the problem was in the exhaust side, and it was carboned up. I tried several different things on it, and then crossed my fingers and used oven cleaner on it. I've successfully used oven cleaner on exhaust elbows with GREAT success. It worked like a charm. As noted above, be VERY careful - these things spin at 60-70,000 rpms, and a tiny nick will destroy them. I used a stainless brush on the lagging (the inside of the exhaust housing) after removing the turbine. Don't touch the turbine with ANYTHING metal.

I reassembled it, and it now runs BETTER than it ever has. Spools up quickly, and runs at top RPM without trouble at all.

My fault completely that it got carboned up. Running it at too low an RPM.
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