[C320-list] Raw water system

[Warren Updike]

After owning our #62 for about 2 years, I had a problem with cooling. I
found about 7 impeller blades in the intake to the heat exchanger from the
prior owner. Be sure to check that.

Warren & Pattie Updike
Catalina 320, #62, "Warr De Mar"
Middle River, Chesapeake Bay

-----Original Message-----
From: james_delong [mailto:james_delong at bellsouth.net] 
Sent: Monday, January 11, 2010 9:35 AM
To: c320-list at lists.catalina320.com
Subject: [C320-list] Raw water system

Y'all, (I'm allowed to use that term as I'm in Georgia)

Anyway...

I have an issue with the raw water system.  It seems to work intermently!  

Yep...checked the sea cock (clear), strainer (clear) and impeller (new)....

What is next?  I'm assuming the raw rater pump itself (do these fail?), heat
exchanger and the mixing elbow, but don't want to tackle those without some
indication either of these could be the culprit!

Some history.  Once we smelled rubber burning like the pump stopped
rotation.  After checking this and tightening the belt all was OK.  A couple
of other times there was no exhaust water, but the next time there was!
After the last sail, all was OK.  But starting the boat at the dock now
results in no flow at all.

Ideas?

Thanks,

Jim #453