Hi everybody
I just put in a a new transmission. My engine is a Volvoi MD17C raw water cooled the transmission is a MSB . I have however come up with a mindbending issue and I would appreciate your input. When I cleaned out the other transmission I found a old piece of impeller, almost half a wing stuck in one of the elbows. This surprised me as the transmission water to cool it is before the pump and the engine. I suspect that the transmission cooling has been set up differently when the previous owner had the boat This brings up the point of what is the right order. As it is I have it set up like this Seacock - Strainer- Water pump -engine- riser-exhaust I had a lot of scale in the old transmission and considering a piece of impeller as well it is a wonder how water came through it. I am considering a different order, actually 2 different ways. 1.Seacock- Strainer- Water pump - Transmission - Engine- Riser- Exhaust Either that or 2 . Seacock- Strainer - Water pump - T - (one end of the T to the engine the other to the Transmission) Riser and T to transmission for the exhaust This would eliminate scale build up in the transmission restricting cooling of the engine. In the manual the water is routed from the seacock to the transmission then the pump, but that seems wrong, what do you think Regards John
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