[C320-list] Westerbeke 30b

[Mike Mellon]

There is another alternative pump available (or was available 3 years 
ago), but again, the information on it is not accessible to me at the 
moment.   The issue was that it used a unique impeller which was 
available only from the company that offers the pump. I'll try to locate 
the name.  You might find it on the web. They did claim as I recall that 
it had a longer impeller lifetime.

By the way, I found the PN's**for the pumps:  The original pump is 
33636, the replacement by Westerbeke is *48080.* 
<https://www.bing.com/search?q=westerbeke+raw+water+pump+48080&FORM=QSRE7>

Here is an excellent video about how the pump goes together and is rebuilt.

https://marinehowto.com/rebuilding-a-raw-water-pump/

Mike


On 6/14/2020 10:34 AM, danb70341 at gmail.com wrote:
> Thanks Mike
> I will likely replace but looking for a cheaper alternative to the westerbeke pump. I saw a video on line of a replacement using a Johnson pump but was for westerbeke generator. I think the water pump is the same as on the 30b
> Dan
> Tranquility #250
>
> Sent from my iPad
>
>> On Jun 14, 2020, at 12:24 PM, Mike Mellon <mmellon at cruzio.com> wrote:
>>
>> Hello, Dan.  I am not on the boat presently, so I can't check for sure. But my recollection is that the original Johnson pump on our 30B (1996 320) does have a weep hole at the bottom, and it should be clear.  In that pump, the is an oil seal closest to the engine, and another seal closer to the impeller that seals the water pump chamber.  The weep (drain) hole is in between them, so if the water seal does not seal perfectly, then any excess water will be drained out.  If there is a lot of water coming out (I would guess more than a drop every few minutes), that indicates the water seal is failing.
>>
>> The pump can be rebuilt or replaced with the newer design (I don't have access to the part numbers right now).
>>
>> When I am on the boat, I'll check this original pump (which is now a rebuilt spare) and the newer pump that replaced the original and inspect them for the drain hole.
>>
>> Best regards,
>>
>> Mike Mellon
>> LaVida, 1996, #324
>>
>>
>>> On 6/14/2020 6:57 AM, pat reynolds wrote:
>>>   Not on my 1995
>>>      On Wednesday, June 10, 2020, 10:46:02 AM CDT, danb70341 at gmail.com <danb70341 at gmail.com> wrote:
>>>     If you have this engine does the raw water pump have a weep hole? I think they all do but the hole I observed contains a piece of metal. I am wondering why that is the case.
>>>
>>> Thanks
>>> Dan Bochniak
>>> Tranquility #250
>>>
>>>
>>> Sent from my iPad
>> -- 
>> Michael Mellon
>> 45 Ortalon Ave
>> Santa Cruz, CA 95060
>> mmellon at cruzio.com
>> 831-425-5583 Home
>>
-- 
Michael Mellon
45 Ortalon Ave
Santa Cruz, CA 95060
mmellon at cruzio.com
831-425-5583 Home