Mike Posted November 1 Share Posted November 1 The coolant cap on my TAMD63 was flagged as incorrect on the survey when I purchased my boat. This was interesting to me because the cap looks like it is original. After doing a lot of digging, and questions with various diesel technicians, I discovered the surveyor is correct. Apparently, if you are using an external recovery tank, the coolant cap needs to have a rubber gasket on the top rim. If you don't have a rubber gasket, it can prevent the coolant from returning to the engine when it cools down. I checked the Volvo Penta parts diagram and apparently the original cap (even the replacement) does not come with this gasket. Possibly because the original design didn't include an external recovery tank??? The surveyor recommended a Stant cap at 7psi (or 50 kPa), which you can find almost anywhere. Quote Link to comment Share on other sites More sharing options...
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