Cleaning of the cooler.
The cool water cooler for the starboard engine was cleaned last year but for the port side engine this was impossible due to the fact that the cooler could not be removed since the fuel tank was in the way. Since the fuel tanks were removed it was now possible to remove the cooler as well. How the cooler needs to be removed speaks for itself loosen the nuts and pull the cooler out.
Although difficult to see on the pictures the cooler was pretty dirty and I presume that it has never been removed since the engines were installed.
The cooler was placed in a bin filled with normal house hold cleaning agent, vinegar. To make sure that there was a reasonable flow through the cooler a small aquarium pump was placed into the bin and the flow through de cooler was directed opposite the normal flow from the round part to the square part.
Since I did not see a lot of difference after 24 hours I let the cooler into liquid the for another 48 hours.
When the cooler then was removed one could see some improvement and looking into the bin there was quite some dirt on the bottom.
New O-rings were installed on the cooler new gaskets made and the cooler was installed again on the engine. First impression after having a test run with the engine while docked is that the cleaning of the cooler was required, engine temperature stays now cooler than before the cleaning.
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