[C320-list] Engine seacock and no water out the exhaust - 27 hp, 3G Yanmar

[Chris Burti]

Sounds like a great article. will you send it to me as well?

Chris

Chris Burti
Farmville, NC


On Tue, Jul 12, 2016 at 1:37 PM, Jeff Hare <Catalina at thehares.com> wrote:

> I'll post a series of pictures in the C320 Photo Technical Photos gallery
> showing the details, the disassembly and parts of the thru-hull valves next
> time I get to the boat.
>
> I have a spare Forespar thru-hull assembly that I can break down.  This
> should clear up all the magic surrounding our thru-hull fittings and make a
> good reference.
>
> Cheers!
> -Jeff Hare
> #809 Woodbine II
>
> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf
> Of tharrison at innovations-plus.com
> Sent: Tuesday, July 12, 2016 10:18 AM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Engine seacock and no water out the exhaust - 27
> hp, 3G Yanmar
>
> Thanks Jeff, I will tighten the four screws and see if this helps. I
> removed
> the water strainer, with great fear. Cleaned the filter and no leaks.
>
> When I first purchased the boat the seacock was real hard to open and
> close.
> I purchased special grease ($$$) from the marine supply store. I have
> applied this every haul out for the last three years. It turns nice an easy
> now. I think I will skip this maintenance practice next year.
>
> Ted
>
> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf
> Of Jeff Hare
> Sent: Monday, July 11, 2016 9:27 PM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Engine seacock and no water out the exhaust - 27
> hp, 3G Yanmar
>
> Ted,
>
> Does the seacock handle turn so easily that it could possibly close on its
> own?  That's really unusual for these valves.  Usually it's the opposite
> problem.
>
> Anyway, if you look at the top of the seacock, you'll see 4 stainless steel
> Philips head machine screws.  You can try snugging these up a little.  Not
> Sampson strength tightening, just good and snug.  Tightening/loosening
> slightly changes the pressure on the ball in the valve and may solve the
> problem.
>
> The white ring on the side of the handle hides a screw that holds the
> handle
> on.  The white ring is actually a plug for the outside of the thru-hull.
> It
> has a loop on it for tying a string to.  You can safely just pull this
> white
> plug out of the handle, as it is only held in place by friction of little
> O-ring.
>
> Do not under any circumstances remove the screw in the handle itself while
> the boat is in the water!!!  Doing so, will probably blow the screw and
> various washers half way across the boat and you'll be hard pressed to get
> them back in with water coming into the boat.  So, don't remove the
> handle!!
> But it is ok to tighten/adjust the screws on the top of the thru-hull body
> a
> little.
>
> If the handle is really loose, I suspect that it isn't sealing that well
> and
> would leak if the hose, raw water filter or impeller cover were removed.
>
> I would see if you can check this before removing the impeller cover.
>
> -Jeff Hare
>
>
>
> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf
> Of tharrison at innovations-plus.com
> Sent: Monday, July 11, 2016 1:38 PM
> To: C320-List at Catalina320.com
> Subject: [C320-list] Engine seacock and no water out the exhaust - 27 hp,
> 3G
> Yanmar
>
> I went out for sail and engine overheated.  I checked and the seacock was ¾
> closed. So I opened it and all good. So I thought, when did I close it!
> Went
> out yesterday and the same thing happened and it was closed. This time I
> knew I did not close it.  Only this time it does not pump water so I think
> I
> may have killed the impeller.
>
>
>
> So what cause the seacock to close. How do you tighten it so does not close
> on its own? There are four screws and a white ring on the side. The ring
> just turns and does not appear to do anything.  Any suggestions.
>
>
>
> The second question does anyone have the instructions to change the
> impeller. Is it just a matter of taking the four bolts out? If pieces of
> the
> impeller are in the water heat exchanger what is the  best way to get them
> out?
>
>
>
>
>
> 1997
>
> Hull 424
>
>
>
> Thanks
>
>
>
> Ted
>
>
>
>
>
>
>