[C320-list] Johnson Water pump replacement for Yanmar

[Joe Grande]

While I have replaced both
engine water pumps on Whisper #772 over these 18 years, I ALWAYS carry at least one extra impeller for the raw water pump.
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________________________________
From: C320-list <c320-list-bounces at lists.catalina320.com> on behalf of RONALD HODEL <ronandgail2 at me.com>
Sent: Monday, April 25, 2022 7:03:28 AM
To: C320-List at catalina320.com <C320-List at catalina320.com>
Subject: Re: [C320-list] Johnson Water pump replacement for Yanmar

I bought a new Johnson F4B-903 pump and had the one that was failing rebuilt. I put the rebuilt one back on the boat and I carry the new one in my engine spares box. It was the more expensive option but we were off cruising and going places where there would have been no place to have a failing pump fixed. (Expensive option / cheap insurance).

Ron Hodel
#1070 Lokomaikai

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> On Apr 25, 2022, at 12:51 AM, Dennis Cookson <dennis at cooksons.net> wrote:
>
> Dean, I had a similar situation and chose to refurbish the pump. Replacement bearings and o-rings are of standard size and readily available. Any marine engineer could fit these for you.
>
> Dennis Cookson
> Catalina 577
>
>> On 25 Apr 2022, at 04:10, Dean Agee <dagee at iserv.net> wrote:
>>
>> My Johnson F4B-903 pump froze up.  I disassembled it and found the smaller bearing had failed.
>>
>> It appears there are number of replacement options.  Does anyone have a recommendation for a pump?  For a vendor?
>>
>> Thanks!
>>
>>
>> Dean Agee
>> AhSeaHola, #912
>>
>> Bay St Louis, MS
>