LD28 marine water drain plug

[richard Novossiltzeff]

Hi all,
The marine version of the LD28 doesn't have a radiator only a heat exchanger, so I'm not sure if the engine is fitted with a drain plug. The manual says the fresh water should be flushed/cleaned and changed every 6 months/600hrs but nowhere does it say how to do that?
Anybody out there with that info?
Thanks
Richard
Albin27CS with LD28M
Nova Scotia Canada

[asavage]

The block has a drain plug -- pretty good size -- left side rear (the side the starter is not on). Here's a blow-up of a pic of that side of the engine, and you can just make it out:



It sits at the lower end of water jacket, so it's the low point of the engine and the first time you pull it, a lot of crap comes out. It is installed very tight, so get a good-fitting socket and a breaker bar, and hold it square before applying torque, or you'll end up drilling it out when the corners round off.

The heat exchanger is the blue box at the front?

[click on images for larger)




Yeah, I'd drain at the block at the back. You might even want to install a valve back there, if you can find a compatible fitting. It's probably an odd size.

[richard Novossiltzeff]

Great info, Al, thanks.
I'll get on to it and actually I might pass that on to the Albineers who have the Nissan since nobody answered my queery on the Albin site... could it be that nobody drains the engine?
Yes, the heat exchanger is the blue box in front, in the picture. The ½" black hose going down from it goes to the raw water pump which is a neoprene impeller type which is run by an "A" belt from the crankshaft pulley. The raw water goes through the exchanger and then goes through the exhaust to cool the gases and exits at the stern.
Happy motoring.
Richard
PS: did you get a copy of the marine maintenance manual?

[asavage]

PS: did you get a copy of the marine maintenance manual?

I had forgotten, after looking at his blog layout. I've just d/l'd it, and I'll get it on my list, to reassemble the pages he's got oddly chopped up. Thanks.