[C320-list] Johnson Water pump replacement for Yanmar

[Jeff Smith]

I just to rebuild my pump (Perkins not Yanmar). Given that your bearings
failed, just realize that is a more difficult task than simply replacing
the o-ring seals. I used a ball joint press kit from an auto parts store to
press the bearings, but it was far from a smooth operation. My thought
process was that, for $35 - $45, it was worth an attempt before I committed
to $250+ for a refurbished pump.

YMMV,
Jeff
‘94, #121

On Mon, Apr 25, 2022 at 3:50 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
>
>