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Old 13-04-2011, 09:44   #1
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Raw Water Pump

My yanmar needs a new one 3gm30f.
Any recomendations as to replace or rebuild.
Or a better price of $400 ?
The leak is a small drip when off nothing when running.
Seems to be at shaft end , there is a small slit where water is dripping.
Thank-you for any help .

"It was the Law of the Sea, they said. Civilization ends at the waterline. Beyond that, we all enter the food chain, and not always right at the top.
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Old 13-04-2011, 09:55   #2
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Re: raw water pump

I had same problem for a 3HMF
Small leak also... not due to impeller or seal
just the pump leaking
I get a new one , I think it's worth the 400 $ and I sleep better...
Price was 400 and something

People spend time putting little boats in bottles, me I put bottles in my little boat...
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Old 13-04-2011, 10:58   #3
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Re: raw water pump

If it like most pumps that drip is a sign that the pump needs the seals replaced. just get a rebuild kit. if like my Perkins pump it takes about an hour if it is readily accessible. kit was about $40.00 on mine
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Old 13-04-2011, 11:06   #4
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Re: raw water pump

sometimes your yanmar parts place will rebuild the pump seal for around 100 bucks. you can rebuild the seal yourself with a little effort for around 10 bucks. either way you need to remove the pump. beats paying 400 or more.
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Old 13-04-2011, 11:22   #5
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Re: raw water pump

Depco Pump Company in Clearwater, Florida rebuilds all makes of marine water pumps; you will not know it is not new when you get it back.........
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