We didn't check the impeller. It was replaced last year so we didn't worry about it; in my experience, with water coming out the weep hole the pump assembly itself is failing. Plenty of water was coming out of the exhaust.
The distributor that my marina called (I was present for this) said they have no more rebuild kits and won't get any more as they are not being made any longer. (Sherwood 6-screw version) It looks to be a pretty easy replacement -- 4 bolts holding the pump to the engine -- but I didn't want to deal with the hoses, which are no doubt practically fossilized in place, and the outflow hose ends up in a very difficult to reach area. David On Sat, May 1, 2010 at 3:17 PM, Sonshingle <[email protected]> wrote: > > > David, > > Were any of the fins missing from the impellor? What went bad with your > pump? Was there much water coming out the exhaust? Is there the possibility > the pump can be rebuilt? I have a 1988 with a M-18 and am curious. > > Dick Schmidt > Greenville, NC > > > --- On *Fri, 4/30/10, David Savlin <[email protected]>* wrote: > > > From: David Savlin <[email protected]> > Subject: [IC27A] Universal M18 water pump > To: [email protected] > Date: Friday, April 30, 2010, 7:42 PM > > > > Hiyas y'all -- > > We launched Persephone this past week. YAY! On our annual dip into the Root > River in Racine, Wisconsin (where we winter our pride and joy) I performed > the regular check for leaks from the thru-hull fittings and hoses. All dry, > so I heated up the glow plugs and (as is usual after a winter) the motor > eventually coughed to life. We have an inboard Universal M-18 motor, and I > pulled the door open slightly as would fit without taking the companionway > ladder off. I didn't see anything suspicious, but a little voice in my head > said, "This year is a new year. This year is a special year. Take the ladder > off and open the door all the way." So I pulled off the ladder and opened > the engine compartment door all the way, and LO AND BEHOLD! There's a stream > of water spurting out of the lower weep hole of the sea water pump. OH NOES! > > Upon further inspection, it was spurting quite a bit of water at idle, > which dried up at higher revolutions, which was odd. I consulted our > experienced yard boys and also my handy dandy M-18 manual. Given that this > water pump is 22 years old we decided this past winter pushed it over the > edge into failure. (The engine was properly laid up for winter as evidenced > by the antifreeze that spurted out the exhaust at startup.) The pump was > indeed pushing water as evidenced by the exhaust. > > The marina office checked and as there are no more rebuild kits available > for this Sherwood 6-screw pump, a whole new pump would need to be ordered > and installed. They quoted me a max of 2 hrs labor, which makes sense given > what I saw (four screws holding the whole thing to the engine block, two > hoses attached, all easy to reach). The pump, though, was quoted as $450 > from Torresson. Does this agree with you all? I was going to do the work > myself but I was afraid of getting 22 yr old hoses off and back on, and the > quote of 1-to-2 hrs labor wasn't out of the question. > > Thanks for your advice! > > on a side note, we intend to look into servicing the fuel filters (both of > em) and looking into the heat exchanger zinc / engine coolant / etc this > year. This motor DOES have a heat exchanger, right? My boat is hull # 6480 > (I think) from 1988. > > David > s/v Persephone > Chicago, IL > > > >
