Cleaning A Heat Exchanger

stormsurf · 18-06-2009, 06:07

I've got a pair of Yanmar 6LY2A-STP's and am having an overheat problem on my starboard side. I've done the usual raw water check and changed raw water impeller. I am now down to cleaning the heat exchanger. To clean the tubes, I had a great idea using a .22 caliber rifle cleaning brush for the tubes. I will try this today. Any other ideas for trouble-shooting?

Thanks much. Captain Blair Perkins

anjinsan · 18-06-2009, 07:56

Westerbeke / Universal Marine Heat Exchanger Photo Gallery by Maine Sailing at pbase.com
found this on line, hope it helps.

speciald@ocens. · 18-06-2009, 08:37

Take it to a radiator shop. They will "pickle" it in an acid wash that will remove the scale. Re-paint it and your ready to go.

limmer · 18-06-2009, 08:41

I am about to head south so I took all the heat exchangers off and took them to a rad shop. 3 in total, 50 bucks each and they rebuilt them to new, paint and everything. they let them sit in a acid sollution for a day or so which strips and cleans all debris and then pressure tests them . limmer

18-06-2009, 06:07	#1
stormsurf Registered User Join Date: Mar 2009 Location: Nantucket MA Boat: Midship Marine, Aluminum Power Catamaran, 47'- Shearwater Posts: 10	Cleaning A Heat Exchanger I've got a pair of Yanmar 6LY2A-STP's and am having an overheat problem on my starboard side. I've done the usual raw water check and changed raw water impeller. I am now down to cleaning the heat exchanger. To clean the tubes, I had a great idea using a .22 caliber rifle cleaning brush for the tubes. I will try this today. Any other ideas for trouble-shooting? Thanks much. Captain Blair Perkins

18-06-2009, 07:56	#2
anjinsan Registered User Join Date: Dec 2008 Location: California Boat: Catalina 30 Posts: 79	heat exchanger Westerbeke / Universal Marine Heat Exchanger Photo Gallery by Maine Sailing at pbase.com found this on line, hope it helps.

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18-06-2009, 08:37	#3
speciald@ocens. Registered User Join Date: Apr 2008 Location: On the boat - Carib, Chesapeake Boat: 58 Taswell AS Posts: 411	Take it to a radiator shop. They will "pickle" it in an acid wash that will remove the scale. Re-paint it and your ready to go.

18-06-2009, 08:41	#4
limmer Registered User Join Date: Apr 2007 Location: n vancouver Boat: c&c landfall 43 Posts: 100	I am about to head south so I took all the heat exchangers off and took them to a rad shop. 3 in total, 50 bucks each and they rebuilt them to new, paint and everything. they let them sit in a acid sollution for a day or so which strips and cleans all debris and then pressure tests them . limmer