Seahorse 18 oil in and around water pump

[TenE307]

I just replaced the impeller and tried it. worked for about 5 min then noticed no water coming out. so took it back apart and impeller is fine. the drive shaft that moves the propeller comes out and the oil in there is not white. is the drive shaft supposed to come out.<br /><br />model fd-12 1958 seahorse 18<br /><br />Thanks, <br /><br />tried to get it out fot the weekend, but back to 4.5 hp.

 

[JB]

Re: Seahorse 18 oil in and around water pump

Ahoy, Ten.<br /><br />Your question is not clear. Are you talking about the drive shaft (vertical) or the prop shaft (horizontal?

 

[TenE307]

Re: Seahorse 18 oil in and around water pump

vertical. cant get to prop shaft screws are painted in and wont come out.

 

[alcan]

Re: Seahorse 18 oil in and around water pump

Hi Ten<br /> With the water pump removed,the driveshaft will slide out of the L/U. If the driveshaft slides out with the pump housing installed you will need a new pump housing, or possibly just a new drive pin for the empeller. Check L/U oil for water intrusion. The preform vac and presure test to determine if you have leaks. Odds are pretty good that you'll need to reseal your L/U. Do the tests first, no sense messing with it unbless leaks are found. Quite a bit of sludgey oil here is normal espiecaly when run in a test tank. There is no t-stat on this model, So the cooling system is fairly stright forward. Empeller, empeller housing. drive pin,wear plate, and water tube gromets all must be in good shape. Also check and clean the casting before instalation of pump components.

 

[Yepblaze]

Re: Seahorse 18 oil in and around water pump

On my 58 18hp Johnson, Yes the shaft would lift out from the lower unit. <br /><br />In fact the shaft sort of did the rising snake from a basket, as I applied pressure to the removed and in a vise for repair lower unit.<br /><br />With such a rich oil mix and only partialy complete combustion these motors exibit, a lot of goo in the barrel is normal. Even during a day of putting here and there and idleing, a lot of that goo builds in the midsection only to come out as little globish oily gooballs that are seen on occasion behind the boat.

 

[TenE307]

Re: Seahorse 18 oil in and around water pump

Any advice on taking the screws out on the lower unit. got all but two off and they wont budge.