Thread: Muddy CAT 3306
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Old 08-10-2020, 06:12 PM   #53
LeoKa
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City: Vancouver
Vessel Name: Ironsides
Vessel Model: 54' Bruce Roberts steel sailboat hull, coastal LRC, 220HP CAT 3306.
Join Date: Apr 2017
Posts: 1,135
It seems that my problem has been solved.
After replacing the sea water pump. Flushing the sea water system with Rydlyme. Removing and fixing the water pump. Flushing the coolant system with Rydlyme. I have perfect cooling at cruising speed.
The problem was the water pump. It was missing the connecting pins and the center bolt, which holds the gear to the impeller's housing. I bought the pins, bolt, gaskets online and mounted it back. The cooling temp immediately went down. Right now, it does not climb higher than 150F. I reward this to the Rydlyme flushing, which must have cleaned out everything.
The water pump could have been damaged by the sea water pump's deterioration, since I did not have overheating problems before.
I will go for a weekend sailing soon, which will be the real test of these repairs.
Thank for all your help.
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