My Universal M4-30 has a Sherwood water pump that I hate every time I have to
touch it (mercifully infrequent). For some reason, they designed it with the
screws coming in from the back, which are a PITA to get to. I remember reading
that there was an Oberdorfer pump that could replace the She
Like others, I believe the vanes will orient themselves once the pump is
used. I've never bothered to orient them.
I understand completely about changing the impeller in the Sherwood pump.
After changing the impeller on my Sherwood pump, I noticed it was leaking
slightly at the shaft.
After doin
Lube them a little with Vaseline or dish soap just to be sure. I made this
video a year ago for work. Different pump... Same idea. It demonstrates
the Globe Run-Dry impeller and the Jabsco impeller puller.
https://youtu.be/AYs662eKTFs
Josh Muckley
S/V Sea Hawk
1989 C&C 37+
Solomons, MD
On Sun
Hi Dave,
Your assumption is correct.
The vanes travel from inlet to outlet the long way around the
housing. The cam allows the water to be squeezed so it goes through
the outlet port.
Although not necessary, orienting them in the direction of travel is
a good practice.
Cheers, Ru
Thanks Alan- That sure wil make the job easier (at least until someone
disagrees). I love this list! Dave
> On Apr 22, 2018, at 10:58 PM, ALAN BERGEN via CnC-List
> wrote:
>
> It doesn't matter which way the vanes are turned, when you install the
> impeller. As soon as the engine turns
It doesn't matter which way the vanes are turned, when you install the
impeller. As soon as the engine turns over, the vanes will correct
themselves.
Alan Bergen
35 Mk III Thirsty
Rose City YC
Portland, OR
On Sun, Apr 22, 2018 at 7:34 PM, David Knecht via CnC-List <
cnc-list@cnc-list.com> wrote
I checked the impeller on my Sherwood water pump and it was OK, but I am
unclear how to reassemble it. Here is a diagram of the design.
http://www.marinedieseldirect.com/catalogs/catalog_group.php?owner=mdd&page_ident=200144-51&model=M4-30%20/%20M4-30A&manufacturer=Universal&title=Sherwood%20Wat
