Gearbox renovation and crankcase ventilation solution

In this blog post we will show our gearbox renovation and crankcase ventilation solution. For the crankcase ventilation solution we finally decided that we will pass the blow-by gases to the intake via the valve cover.

Gearbox renovation

We have a Volvo Penta RB gearbox, which we wanted to take apart to see that everything looked good, and change/repair what was necessary.

We measured the wear on the gearbox. Everything was according to specification, so we will only change sealings and gaskets. One thing we noticed when taking it apart was that the old oil in the gearbox smelled like transmission oil, which is common to use for gearboxes, but for Volvo Penta RB gearbox you actually should use standard engine oil.

CrankCase ventilation solution

As said above, the solution we decided to settle with was to pass the blow-by gases to the intake via the valve cover. The reason we choose this solution is because we don’t want the blow by gases inside the boat.

The next step of our Volvo Penta MD19 renovation will be to do the final painting and test-run it again to make sure that the leakages fixes we did works. If you want to read more about our engine renovation, all posts related to that can be found under the category Engine.