[C320-list] C320-list Digest, Vol 3232, Issue 1 raw water pump

Tue Jul 31 17:25:30 PDT 2018

I’ve replaced the seal on my raw pump in the past.  The easiest way I’ve found to do it, is to remove the pump and take it to a shop because the seal has to be pressed out and a new one pressed in.  It’s a pretty simple job in a shop with the right tools.  I found it to be much cheaper than replacing the pump, especially if the inner surfaces are in good shape.  A leaking pump at the shaft seal however is a different animal than the pump not drawing water and pumping.  My guess is that if you have a new impeller and good cover sealing surfaces, your problem may likely be air trapped in the pump.  This happens commonly on my pump when I clean the suction strainer. Try loosening the clamp on the suction hose to the pump and see if there is water right there or a bunch of trapped air.  You have to bleed all of the air out in order for the pump to pull suction.  Because of this, I installed a hose connection just upstream of my strainer where I can put a short length of clear hose to get some head height, fill the hose with water and let it prime itself from a bucket of water.  If you do this, you have to close your thru hull valve or the  water will just pour through it however.  Once it pumps clear water from the bucket, I shut the engine down, disconnect the hose and line up the  thru hull valve again.  I also use the same set up to flush my raw water system with fresh water or pink antifreeze for winterizing.  Hope this helps…

Regards,

Joe Luciano
Second Wind
2005 Catalina 320

> On Jul 31, 2018, at 5:03 PM, Tom Talling <ttalling at gmail.com> wrote:
> 
> Yes very frustrated.  It would not draw over 1 gallon of antifreeze at the end of last year and I replaced the impeller and it still wouldn’t draw. When it went back in the water in the spring it would draw but it was leaking so I replaced the impeller again as well as cleaning up the surfaces. It stilled leaked. I am thinking it is the impeller shaft seal and am trying to replace it but having difficulty finding the right one.  Just thinking buying a whole new pump would be a lot easier. 
> 
> Regards,
> 
> Tom Talling
> 215-262-1427
> Blue Mountain Medical
> www.BlueMountainMedical.com
> 
> Please excuse my brevity. 
> 
> Sent from my iPhone
> 
>> On Jul 31, 2018, at 4:00 PM, c320-list-request at lists.catalina320.com wrote:
>> 
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>> Today's Topics:
>> 
>>  1. Raw water pump (Tom Talling)
>>  2. Raw Water pump (Tom Talling)
>>  3. Re: Raw water pump (Dick Walker)
>>  4. Re: Raw water pump (Dick Walker)
>>  5. Re: Raw water pump (Graeme Clark)
>> 
>> 
>> ----------------------------------------------------------------------
>> 
>> Message: 1
>> Date: Tue, 31 Jul 2018 09:14:18 -0400
>> From: Tom Talling <ttalling at gmail.com>
>> To: c320-list at lists.catalina320.com
>> Subject: [C320-list] Raw water pump
>> Message-ID: <03248F2C-0448-40F1-968D-B1449967DF73 at gmail.com>
>> Content-Type: text/plain;    charset=us-ascii
>> 
>> 
>> Can anyone recommend an affordable aftermarket raw water pump that holds up?
>> Regards,
>> 
>> Tom Talling
>> One Shot
>> Bohemia River
>> TTalling at comcast.net
>> 215-262-1427
>> 
>> Please excuse my brevity. 
>> 
>> Sent from my iPhone
>> 
>> 
>> ------------------------------
>> 
>> Message: 2
>> Date: Tue, 31 Jul 2018 09:15:17 -0400
>> From: Tom Talling <ttalling at gmail.com>
>> To: c320-list at lists.catalina320.com
>> Subject: [C320-list] Raw Water pump
>> Message-ID: <3FDF262E-DB7A-4AD2-8F92-6DD9E8D9CB95 at gmail.com>
>> Content-Type: text/plain;    charset=us-ascii
>> 
>> I forgot to say it was for a Yanmar Diesel.  
>> 
>> Regards,
>> 
>> Tom Talling
>> 215-262-1427
>> 
>> Please excuse my brevity. 
>> 
>> Sent from my iPhone
>> 
>> 
>> ------------------------------
>> 
>> Message: 3
>> Date: Tue, 31 Jul 2018 09:01:04 -0700
>> From: Dick Walker <dickwalker at att.net>
>> To: C320-List at Catalina320.com
>> Cc: c320-list at lists.catalina320.com
>> Subject: Re: [C320-list] Raw water pump
>> Message-ID: <4BC661C8-E640-476B-801F-55F69E868E49 at att.net>
>> Content-Type: text/plain;    charset=us-ascii
>> 
>> I would not mess around and get the stock pump. 
>> 
>> Cheers
>> 
>> 
>> 
>> Dick Walker
>> 740 Olive Ave.
>> Coronado ,CA 92118
>> 619.435.8986
>> 
>> 
>> 
>>> On Jul 31, 2018, at 06:14, Tom Talling <ttalling at gmail.com> wrote:
>>> 
>>> 
>>> Can anyone recommend an affordable aftermarket raw water pump that holds up?
>>> Regards,
>>> 
>>> Tom Talling
>>> One Shot
>>> Bohemia River
>>> TTalling at comcast.net
>>> 215-262-1427
>>> 
>>> Please excuse my brevity. 
>>> 
>>> Sent from my iPhone
>> 
>> 
>> 
>> ------------------------------
>> 
>> Message: 4
>> Date: Tue, 31 Jul 2018 09:01:04 -0700
>> From: Dick Walker <dickwalker at att.net>
>> To: C320-List at Catalina320.com
>> Cc: c320-list at lists.catalina320.com
>> Subject: Re: [C320-list] Raw water pump
>> Message-ID: <4BC661C8-E640-476B-801F-55F69E868E49 at att.net>
>> Content-Type: text/plain;    charset=us-ascii
>> 
>> I would not mess around and get the stock pump. 
>> 
>> Cheers
>> 
>> 
>> 
>> Dick Walker
>> 740 Olive Ave.
>> Coronado ,CA 92118
>> 619.435.8986
>> 
>> 
>> 
>>> On Jul 31, 2018, at 06:14, Tom Talling <ttalling at gmail.com> wrote:
>>> 
>>> 
>>> Can anyone recommend an affordable aftermarket raw water pump that holds up?
>>> Regards,
>>> 
>>> Tom Talling
>>> One Shot
>>> Bohemia River
>>> TTalling at comcast.net
>>> 215-262-1427
>>> 
>>> Please excuse my brevity. 
>>> 
>>> Sent from my iPhone
>> 
>> 
>> 
>> ------------------------------
>> 
>> Message: 5
>> Date: Tue, 31 Jul 2018 17:50:43 +0100
>> From: Graeme Clark <cg at skyflyer.co.uk>
>> To: Catalina list <C320-List at Catalina320.com>
>> Subject: Re: [C320-list] Raw water pump
>> Message-ID: <E899DDD3-7B8C-43BC-9D61-D6EC1F7A1717 at skyflyer.co.uk>
>> Content-Type: text/plain;    charset=utf-8
>> 
>> Tom
>> 
>> I?m curious; I have a 22 year old Yanmar 3GM30 with  the stock pump (actually made by Jabsco, I believe) and it has held up for over 2000 hrs? You sound as though you?ve had a frustrating time with yours? If so i think you?ve been unlucky.
>> For what its worth - possibly irrelevant - I always replace the impeller every year, as well as the cover gasket. They are both low cost items and it seems worth it for peace of mind.
>> 
>> Graeme
>> 1996, #366
>> 
>>> On 31 Jul 2018, at 14:14, Tom Talling <ttalling at gmail.com> wrote:
>>> 
>>> 
>>> Can anyone recommend an affordable aftermarket raw water pump that holds up?
>>> Regards,
>>> 
>>> Tom Talling
>>> One Shot
>>> Bohemia River
>>> TTalling at comcast.net
>>> 215-262-1427
>>> 
>>> Please excuse my brevity. 
>>> 
>>> Sent from my iPhone
>> 
>> 
>> 
>> End of C320-list Digest, Vol 3232, Issue 1
>> ******************************************