Corrosion Issue - SailNet Community

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  #1  
Old 08-28-2007
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Corrosion Issue

I have a 1973 Volvo-Penta, MD6A, 2 cyl diesel engine. After doing some repair work to the old girl, I discovered that the top of my lift pump has corroded shut and I can't seem to budge it to get to the screen or the diaphram inside. The bolt comes out easily, but the cover is really on there. It looks as though there should have been a gasket there to avoid such an issue, but that is long gone! The piece is shaped a little like a chinese peasant hat and is very thin where it meets the body of the pump and appears to be quite delicate.

any suggestions on what i might be able to do to loosen it and eventually get this piece off?

Once Again...
Many Thanks!
Chris
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Old 08-28-2007
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Can you post a photo of the part??
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Old 08-28-2007
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Rockter will become famous soon enough
A little heat may work... perhaps boiling water. I suspect raw flame will fry the diaphragm and set the diesel on fire or something horrible.

Is the lift pump still lifting OK? I'd leave it if it were.
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Quote:
Originally Posted by sailingdog View Post
Can you post a photo of the part??
I have been searching for a good picture, but can't seem to find any. I will be going back to the boat this weekend, and will take some shots if I can't get it off.
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Old 08-28-2007
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SanderO is an unknown quantity at this point
PB Blaster for a week?

jef
sv shiva
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Old 08-28-2007
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Quote:
Originally Posted by SanderO View Post
PB Blaster for a week?
Where do you get that? I have heard good things about that stuff, but forgot what it was called.

Chris
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Old 08-28-2007
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I got mine at the local auto parts store.
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Old 08-28-2007
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I'll Try it this weekend! Thanks everyone...
Chris
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Be careful... PB Blaster can damage the seals and gaskets... so be very careful with it.
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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Old 08-29-2007
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Maybe heat it with a heat gun or hair dryer. I would just replace it because it will eventually lose seal when you put it back together
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