Yanmar 3QM30 Water Pump

Thanks for the feedback.  Yes the pump is shaft driven (no pulley).  $800+ 
sound like a lot for a new pump when the rebuild kit is $125.  It looks like a 
new boat maintenance adventure in my future.  Pressing in the bearings and 
seals will be new to me.

Smitty
1981 C&C 36CB 

Sent from my iPhone

> On Jul 10, 2017, at 2:59 PM, [email protected] wrote:
> 
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> Today's Topics:
> 
>   1.  25MKII, Tiller Length (Bill Dakin)
>   2. Re:  Yanmar 3QM30 Water Pump Rebuild (Dreuge)
>   3. Re:  Yanmar 3QM30 Water Pump Rebuild (Frederick G Street)
>   4. Re:  Black water tanks (Lee Youngblood)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Mon, 10 Jul 2017 11:49:21 -0500
> From: Bill Dakin <[email protected]>
> To: [email protected]
> Subject: Stus-List 25MKII, Tiller Length
> Message-ID:
>    <CA+6=-qabxn7ml2oqrxw5u03_07wta1va9a1fixi4qp4qriv...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
> 
> 25MKII owners, what is your tiller length and shape
> http://anytiller.com/
> 
> I'm going to refit our Edson pedestal with the original tiller.
> 
> Bill Dakin
> Send CnC-List mailing list submissions to
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> 
> Today's Topics:
> 
>   1.  25MKII, Tiller Length (Bill Dakin)
>   2. Re:  Yanmar 3QM30 Water Pump Rebuild (Dreuge)
>   3. Re:  Yanmar 3QM30 Water Pump Rebuild (Frederick G Street)
>   4. Re:  Black water tanks (Lee Youngblood)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Mon, 10 Jul 2017 11:49:21 -0500
> From: Bill Dakin <[email protected]>
> To: [email protected]
> Subject: Stus-List 25MKII, Tiller Length
> Message-ID:
>    <CA+6=-qabxn7ml2oqrxw5u03_07wta1va9a1fixi4qp4qriv...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
> 
> 25MKII owners, what is your tiller length and shape
> http://anytiller.com/
> 
> I'm going to refit our Edson pedestal with the original tiller.
> 
> Bill Dakin
> S/V Tapestry
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> Message: 2
> Date: Mon, 10 Jul 2017 12:58:37 -0400
> From: Dreuge <[email protected]>
> To: [email protected]
> Subject: Re: Stus-List Yanmar 3QM30 Water Pump Rebuild
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset="utf-8"
> 
> Hi,
> 
> Please note that  3QM30 water pump are not like some of the GM pump with 
> pulleys, the QM pump is shaft driven directly by the camshaft(i.e. no belt).
> 
> I have not rebuilt one, but it looks easy enough, 2 circular clips, bearings 
> and seals. I can send you the schematics from the parts manual if you want.  
> It shows a nice layout of all the parts including the Yanmar part numbers.  
> TOAD Marine lists a new one at $810.16 (yanmar part number 724770-42702).   
> You can see a picture of a new pump at Crowley?s:
> https://billpay.crowleys.com/eSource3/Cooling_pump_assembly/i_0_0_/_Y%20724770-42702
>  
> <https://billpay.crowleys.com/eSource3/Cooling_pump_assembly/i_0_0_/_Y%20724770-42702>
> 
> 
> -
> Paul E.
> 1981 C&C 38 Landfall 
> S/V Johanna Rose
> 
> 
> http://svjohannarose.blogspot.com/
> 
>> On Jul 10, 2017, at 12:00 PM, [email protected] wrote:
>> 
>> Date: Mon, 10 Jul 2017 11:52:05 -0400
>> From: ahycrace <[email protected] <mailto:[email protected]>>
>> To: [email protected] <mailto:[email protected]>
>> Subject: Re: Stus-List Yanmar 3QM30 Water Pump Rebuild
>> Message-ID:
>>    <20170710155209.htbx22970.eastrmfepo103.cox....@eastrmimpo209.cox.net 
>> <mailto:20170710155209.htbx22970.eastrmfepo103.cox....@eastrmimpo209.cox.net>>
>> Content-Type: text/plain; charset="utf-8"
>> 
>> I just did this on my pump 3gm30. The problem was the rear seal. I just 
>> replaced it no problem. Clean off the shaft with 600 wet paper as well as 
>> the other surface. Probably just the seal easy fix. ? ? ? ? ? ? ? ? ? ? ? ? 
>> ? Gary?Liberty 38' mk ll
>> 
>> 
>> Sent from my Verizon, Samsung Galaxy smartphone
>> -------- Original message --------From: William via CnC-List 
>> <[email protected] <mailto:[email protected]>> Date: 7/10/17  7:41 
>> AM  (GMT-05:00) To: [email protected] <mailto:[email protected]> Cc: 
>> William <[email protected] <mailto:[email protected]>> Subject: 
>> Stus-List Yanmar 3QM30 Water Pump Rebuild 
>> The water pump on my raw water cooled 3QM30 (1980) is weeping about 5 drops 
>> per minute from the weep hole behind the impeller housing.? I'm thinking 
>> that this will require a rebuild.? Have listers done this themselves?? Any 
>> recommendations for shops that could do this for me.? I'm in NJ.
>> Any input appreciated!
>> 
>> Smitty
>> 1981 C&C 36 C/B
>> 
>> Sent from my iPhone
>> 
>> _______________________________________________
> 
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> ------------------------------
> 
> Message: 3
> Date: Mon, 10 Jul 2017 13:39:53 -0500
> From: Frederick G Street <[email protected]>
> To: [email protected]
> Subject: Re: Stus-List Yanmar 3QM30 Water Pump Rebuild
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset="utf-8"
> 
> Paul ? I?ve got the Sendure cooling system retrofit on my 3QM, so there?s the 
> engine-mounted pump for the coolant, and a separate belt-driven pump for the 
> cooling water.  The separate pump is similar to those being discussed.
> 
> ? Fred
> 
> Fred Street -- Minneapolis
> S/V Oceanis (1979 C&C Landfall 38) -- Bayfield, WI
> 
>> On Jul 10, 2017, at 11:58 AM, Dreuge via CnC-List <[email protected]> 
>> wrote:
>> 
>> Hi,
>> 
>> Please note that  3QM30 water pump are not like some of the GM pump with 
>> pulleys, the QM pump is shaft driven directly by the camshaft(i.e. no belt).
>> 
>> I have not rebuilt one, but it looks easy enough, 2 circular clips, bearings 
>> and seals. I can send you the schematics from the parts manual if you want.  
>> It shows a nice layout of all the parts including the Yanmar part numbers.  
>> TOAD Marine lists a new one at $810.16 (yanmar part number 724770-42702).   
>> You can see a picture of a new pump at Crowley?s:
>> https://billpay.crowleys.com/eSource3/Cooling_pump_assembly/i_0_0_/_Y%20724770-42702
>>  
>> <https://billpay.crowleys.com/eSource3/Cooling_pump_assembly/i_0_0_/_Y%20724770-42702>
>> 
>> 
>> -
>> Paul E.
>> 1981 C&C 38 Landfall 
>> S/V Johanna Rose
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> ------------------------------
> 
> Message: 4
> Date: Mon, 10 Jul 2017 11:58:16 -0700
> From: Lee Youngblood <[email protected]>
> To: CnC-List <[email protected]>
> Subject: Re: Stus-List Black water tanks
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset="utf-8"
> 
> Hi J-G & Bill,
> 
> On our 35-II, the bladder tank behind the head was packed up with something 
> that turned it into cement.  I think there is an additive for turning paint 
> into a solid. The head was plumbed into a plastic holding tank under the 
> v-berth, with a manual pump, to pump overboard, if offshore or in Canada 
> without pump-out facilities. I?m sure the v-berth tank is a bigger tank, and 
> after excavating the bladder, we appreciate the storage in the head.  
> Sometimes folks do a better job than the original, and you may not need to go 
> back to the original.
> 
> Lee & Kathleen on Simplicity
> a 1974 C&C 35-II
> 
> 
>> On Jul 8, 2017, at 5:04 47PM, Bill Hoyne via CnC-List 
>> <[email protected]> wrote:
>> 
>> That is a good question. I have a 35mkii and it has a black water ?tank? 
>> behind the head. It is not connected and I would like to reconnect it. Does 
>> any one know what size (gallons) it is? It seem to be somewhat collapsable - 
>> is it? Are they robust? Can they be removed/replaced? The only outlet is the 
>> pump out on the deck. Can I replumb it so I can pump it out through the 
>> thru-hull?
>> 
>> Cheers,
>> Bill Hoyne
>> Mithrandir
>> ?74 C&C35 MkII
>> in Victoria,BC
>> 
>> 
>>> On Jul 7, 2017, at 11:19 PM, Jean-Guy Nadeau via CnC-List 
>>> <[email protected] <mailto:[email protected]>> wrote:
>>> 
>>> Does anyone know if the 35MK2 were fitted with black water tanks when 
>>> manufactured in the mid-70?s?
>>> 
>>> Cheers, J-G 
>>> Callisto, 33 mk2
>>> Victoria BC
>>> _______________________________________________
>>> 
>>> This list is supported by the generous donations of our members. If you 
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>> 
>> _______________________________________________
>> 
>> This list is supported by the generous donations of our members. If you wish 
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