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 Catalina/Capri 25/250 Sailor's Forums
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 Sink Pump rebuild
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Erik Cornelison
1st Mate

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USA
92 Posts

Initially Posted - 06/13/2018 :  12:33:23  Show Profile  Reply with Quote
Has anyone rebuilt the sink pump?

My hand pump leaks water from the base onto the counter top slowly while pumping. Otherwise works ok.

Anyone rebuilt it and can tell me what they did? I don't want to buy a new one.

Erik

Erik Cornelison
6th Generation Professional Sailor, First Gen Submarine Sailor.
1986 Standard Rig SW. #5234

sfsmith
Navigator

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USA
111 Posts

Response Posted - 06/13/2018 :  13:04:06  Show Profile  Reply with Quote
After trying all sorts of O-ring combinations and still getting leaks, I pulled the spigot out and wrapped the contact area with several layers of teflon tape. I had to experiment with different amounts of tape. That solved the problem for several years. It's started leaking again, so I plan to try the same solution again this year. I don't see why it wouldn't work again, but you know how it goes with boats.

Solomon Smith
TANGO 89/WK/TR/#5942
Petoskey, Michigan
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islander
Master Marine Consultant

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USA
3234 Posts

Response Posted - 06/14/2018 :  09:51:03  Show Profile  Reply with Quote
I believe there's a rebuild kit for those Whale flipper pumps. Something like 26-30 bucks.

Scott-"IMPULSE"87'C25/SR/WK/Din.#5688
Sailing out of Glen Cove,L.I Sound


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Erik Cornelison
1st Mate

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USA
92 Posts

Response Posted - 06/14/2018 :  12:53:24  Show Profile  Reply with Quote
I like that..whale flipper pump. If its just O-rings I can figure it out, wont mess with it this summer, just want to sail.

I will fix it this fall when I pull the boat from its mooring.

Erik Cornelison
6th Generation Professional Sailor, First Gen Submarine Sailor.
1986 Standard Rig SW. #5234
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hbushey
Deckhand

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USA
21 Posts

Response Posted - 06/14/2018 :  13:51:16  Show Profile  Reply with Quote
Before doing anything, pull the entire pump out. Take it apart (8 screws on the base) and locate the large black rubber cup on the pump piston. Get some silicone plumbers grease and coat the cup with a layer of the grease. The grease is food safe so it won’t hurt you or make water bad. Spread open the lip of the piston cup, I found that my pumps’ cups had taken a set from being unused for many years before I bought the boat - much like an old water pump impeller. Apply a light coat within the white plastic pump housing also. Reassemble the pump and give it try. Doing this immediately fixed the problem for me and made the pump work like new.

And for what it’s worth, I had to also do this with a brand new MK4 flipper pump from CD. Wouldn’t pump water right out of the box.

Heather and Scott
“Respite”
1989 C-25 TR/WK
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islander
Master Marine Consultant

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USA
3234 Posts

Response Posted - 06/14/2018 :  16:13:27  Show Profile  Reply with Quote
Erik, I kid you not. Whale industries is who makes the flipper sink pumps.https://www.defender.com/product.jsp?id=157993
The rebuild kit is on that page also.

Scott-"IMPULSE"87'C25/SR/WK/Din.#5688
Sailing out of Glen Cove,L.I Sound


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sethp001
Mainsheet C-25 Tech Editor

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691 Posts

Response Posted - 06/14/2018 :  18:47:49  Show Profile  Reply with Quote
quote:
Originally posted by islander

Erik, I kid you not. Whale industries is who makes the flipper sink pumps.https://www.defender.com/product.jsp?id=157993
The rebuild kit is on that page also.



I think my boat had some knockoff flipper pumps before I pulled them out and threw them away. They didn't have a name printed on them anywhere. The base dimensions were smaller than the Whale pumps.



Seth
"Outlier" 1987 Catalina 25 SR/SK/Traditional Interior #5541
"Zoo" 1977 Morgan Out Island 30
"Nomad" 1980 Prindle 16
"Lost" 1988 Catalina Capri 14.2
"Marine Tex 1" Unknown Origin POS 8' Fiberglass Dinghy
http://whichsailboat.com/2015/08/22/catalina-22-review/
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Erik Cornelison
1st Mate

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USA
92 Posts

Response Posted - 06/15/2018 :  14:41:29  Show Profile  Reply with Quote
Thanks Scott, I looked at Defender but couldn’t find the kit, your link saved the day.

Erik Cornelison
6th Generation Professional Sailor, First Gen Submarine Sailor.
1986 Standard Rig SW. #5234
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