yanmar

I removed the heat exchanger from a Yanmar 2GM20F and would like to replace the shroud surrounding the core. Does anyone if that is doable and if so, how are the brass end caps which the tubes pass through removed? Did Yanmar pressure fit them on or will a little PB blaster and firm tapping...

I am planning to change antifreeze in the cooling system of my Yanmar 3YM30 (the closed circulation, not the sea water). I could find in the engine manual the coolant capacity, but that does not include the volume of the coolant circulating through the water heater. Does anybody know what extra...