sea king running hot

[mike n]

hello. we got my friends 1948 5hp sea king running but its running hot. we took apart the water pump and cleaned it out but i dont understand exactly how it works and how to tell if its worn.will i see water coming out from anywhere while its running.there is a tube at the bottom of the powerhead on the port side.should water be coming out of there? thanks

mn

[Buccaneer]

Found this in my files, saved from the forum a couple of years ago.
The wobbler type pumps “displace” the water around the rubber
rotor as the eccentric “wobbles” it, forcing water “up” to the
power head. There should be no gaps where indicated in the photo,
or water won’t be properly displaced, or “forced” up hill.

Prepare to be boarded!

[frankr]

You will often see the rubber rotor is swollen because of grease leaking out of the gearcase. Major telltale sign is a gap between the eccentric and ID of the rubber. Also, the rubber often is swollen to the point that it fills the housing on the OD.

That pipe is the crankcase puddle drain. No water comes out there–at least there better not be. Water slobbers out of the slots about half way down.

[mike n]

thank you that is great info.we definitely need new pump parts.we tried to blow air in to what seems to be the pipe going up to the powerhead and it seems clogged.should i take the powerhead off and look for clogs??

mn

[mike n]

does anyone know where to get seals for the gearcase

mn

[Buccaneer]

Doesn’t look like these have actual seals……..do they?

Prepare to be boarded!

[mike n]

i dont think so .it didnt look like a normal seal

mn

[frankr]

The “water seal packing” serves as a seal on the prop shaft to keep grease out of the pump. It is a properly fitting rubber washer. Let’s face it, most motors of that era had crummy seals. That’s why you were supposed to re-grease them so often. And use grease, not oil.

[frankr]

You should be able to blow through the water pipe going to the powerhead. But do not ever remove the side covers from the powerhead unless as a last ditch effort. They are very difficult to reseal. The service manual says to send it back to the factory for re-sealing them. Kind of hard to do with the factory being long gone.

• This reply was modified 6 years ago by frankr.

[mike n]

it wouldnt blow through.should i take the power head off

mn

[Author]

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