[C320-list] Raw water system

[Chris Burti]

Two issues come readily to mind with these symptoms:

1. A piece of impeller broke off with a prior owner and just now has moved
to block the flow (pretty unlikely). You need to check flow at each point in
the circulation system for blockages or leaks, not just at the intake. Check
your bilge, if you have a lot of unexpected water, you may have a problem
after the pump from a leaking, muffler, hose or anti siphon break.

2.  More likely, your impeller has broken loose and is spinning on its
bushing. Remove the cover and see if you can turn the impeller while holding
the pulley on the outside of the pump.




On Mon, Jan 11, 2010 at 9:35 AM, james_delong <james_delong at bellsouth.net>wrote:

> 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
>



-- 
Chris Burti Farmville, NC