06-11-2012 06:31 PM
Solved! Go to Solution.
06-12-2012 08:33 AM
You seemed to hit the obvious items to check.
What do you mean by "The flow in the heat exchanger was 30% stopped in the return"
You would expect to see restriction in the inlet to the exchanger.
If there was foreign material in the outlet of a component than I would expect to see the same material in the inlet of the next component in the circuit.
Check the transmission cooler as well, any restriction in the sea water circuit will contribute to the issue.
Can you tell if one engine is pumping more water than the other? I know its hard to tell but it is a good indicator to tell if the system has the capability to reject sufficient heat.
06-12-2012 04:25 PM
06-12-2012 04:50 PM
Shouldn"t be too hard to check
its at the rear of the engine above the bell housing.
Remove the hoses and visually inspect
I know it is easier said than done on some vessels
The sea water circuit is a series circuit, a restriction anywhere will cause reduced flow everywhere.
06-12-2012 05:25 PM
There shouldn't be any visual restriction
Ideally clean as a whistle
Come minor deposits are OK
Are all the Anodes deteriorated?
Definitely replace all that are required
Is the aftercooler jacket water or sea water cooled?
a serial number would help
06-13-2012 12:20 AM