Raw water pump seal on 2012 V8 5.7L

Donald0039

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Jun 11, 2022
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447
I see some dripping from the raw water pump after shutting down the engine. I was hoping it was the O-ring for the outer housing but the sealing area of the outer housing looked fine as did the O-ring.

So now I think it's the shaft seal. Hopefully the leaking seal has not allowed damage to the bearing.

It does not look like too much work to replace the seal. The bearing would be more work.

A new pump is $500.

Sending it out for a rebuild is $200.

Has anyone needed to replace the seal because of a drip or leak? Was the bearing still good?
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
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a new pump is only $175

look up Johnson pumps. you have either a Johnson F5B-9 or the slightly longer F6B-9. the longer (higher flow) F6B-9 is about $80 cheaper than the F5B for some reason. rebuild kits are reasonable too.

dont pay volvo for the same pump you can buy yourself.

here is a link to the factory catalog (see page 46) https://www.spxflow.com/assets/pdf/johnson-pump-marine-marine-catalog-2018-us.pdf

Avoid the chinese knock-offs on amazon (the sellers with the alphabet soup names)
 

Donald0039

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Jun 11, 2022
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This is the raw water pump. It's a 2011 boat with the engine replaced under warranty in 2012 and I believe some parts from original engine were bolted onto new engine.

Engine is FWC.
 

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Donald0039

Chief Petty Officer
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Jun 11, 2022
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447
The
this should be it with the wire anti-rotation bracket

10-13614-02​


View attachment 408784
The VP pump has a slightly different size inlet than outlet. These seem to look the same diameter. Could not find in the specs where diameters were listed.
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
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Messages
50,944
look at the cover on your pump. it will have Johnsons part number on it.
 
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