I have just finished installing a newly rebuilt Perkins
into my sailboat. The engine
has an expansion tank across the top front of the engine. The heat exchanger
hangs off the bottom of the expansion tank.
I believe that I have connected the hoses incorrectly as I am not getting any raw water
into the mixing elbow
As originally installed the fresh water
flowed from the expansion tank into the exhaust
manifold, then from the exhaust
manifold into the heat exchanger
. As I wasn't sure which connections were which I poured water
into each of the ports
and observed where the water came out. HOWEVER, I WASN'T SMART ENOUGH TO WRITE IT DOWN!!!
Due to lack of availability of Perkins
hoses I chose to remove the heat exchanger from the expansion tank and rotate it approximately 180 degrees in order to facilitate connection of most of the other hoses. I fabricated a hose that runs between the exhaust manifold outlet and the heat exchanger inlet (at the top of the heat exchanger). I am 100% certain that this hose is properly connected.
There are three additional ports
that are all around the bottom of the heat exchanger. Two of them come straight out from the heat exchanger while the third comes out and makes a 90 degree turn UP.
I connected the input from the raw water pump
into one of the two ports that comes straight out. The second port that comes straight out I hooked up to the inlet of the engine oil
cooler. The third port (the one that makes a 90 degree turn UP) I connected to the fresh water inlet on the side of the engine block.
What have I done wrong? I have attached a couple of pictures. The first picture shows three of the four connections. In the picture the exhaust manifold outlet (the one that doesn't go to the expansion tank) goes to the upper heat exchanger port via the home-built quad 90 degree hose that goes out of the picture and then reappears in front of the heat exchanger.
Of the two lower hoses that can be seen in the picture at the bottom of the heat exchanger the upper one goes to (actually comes from) the raw water pump
outlet, while the lower one goes to the engine oil
cooler (out of the picture).
The last hose (that cannot be seen in the first picture) is attached to the 90 degree port coming out of the heat exchanger and goes over to the fresh water inlet in the engine block. It can be seen in the second picture and is next to the raw water pump
I hope someone can help me. I really don't want to have to remove the expansion tank or heat exchanger and do the "water pour" thing again.
Update: It appears that my pictures did not arrive with the post. I will supply them if someone can tell me how.
Thanks in advance,
Valiant 40 #163