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post #1 of 3 Old 09-07-2015 Thread Starter
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Turbo wastegate sticks

It's identified as standard routine maintenance to disconnect the linkage on our Volvo TAMD31S and exercise the gate. Indeed, I find it stuck often. It has gotten to the point where I do so every single time I head out. I was even putting a bit of penetrating oil on the pivot, hoping it would stay free. No luck. In fact, I'm worried there could be seals that don't like it. More often than not, I have to smack it to free it up. No way the vacuum actuator would open the gate on its own.

Any ideas on a lubricant that might stay under all that heat. Doubt it.


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Jeanneau 54DS

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post #2 of 3 Old 09-07-2015
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Re: Turbo wastegate sticks

No oil or solvent. High temperature bearings are either metal on metal or cooled and flooded with high presure oil. Oil on metal to metal burns at high temperatures leaving carbon deposits.
Be prepared to repair or replace before it fails.

Zen is a matter of recognizing reality.
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post #3 of 3 Old 09-07-2015 Thread Starter
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Re: Turbo wastegate sticks

Good point. Something odd about the design that it needs to be exercised. I may strip it down this winter.


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Jeanneau 54DS

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