Re: [Amel Yacht Owners] Onan Raw Water Cooling System Maintenance
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What hull number/year? Has the Onan cooling system ever been overhauled? How many hours on the Onan? Who is the technician or company and what product or chemicals are recommended?
As an alternative, you could remove hoses, raw water pump, manifold, and exhaust elbow, then take the metal parts to a shop that cleans radiators. Have these components chemically cleaned. Repaint and reinstall the components using new gaskets. Install new end caps and zinc on the heat exchanger. Rebuild the raw water pump and install a new impeller.
My guess is that this method is at least twice as good as the run-the-stuff through the sea water cooling system and likely close to the same cost. And, if you rebuild this way, you will basically have a new cooling system.
CW Bill Rouse
Admiral, Texas Navy
Amel School www.amelschool.com
720 Winnie St
Galveston Island, TX 77550