SeaDogAK
Senior Member
- Joined
- Aug 9, 2021
- Messages
- 309
- Vessel Name
- Sea Dog
- Vessel Make
- 1991 DeFever 49 RPH
I have a Westerbeke 8.0 BTD generator, which I believe is original equipment in my 1991 boat. Last summer I stupidly ran it with the seacock closed, which chewed up the impeller. The impeller bits clogged the heat exchanger, and when I tried to rod them out I realized the heat exchanger was totally clogged with scale. I changed out the heat exchanger, but now I’m only getting the tiniest trickle of water out the exhaust.
By pulling hoses I’ve isolated the problem down to the raw water pump. The hose going into the pump gushes water, but only a tiny trickle comes out of the pump. I’ve changed the impeller twice, but that’s not the problem. I can see the shaft turning inside the pump housing, but it’s not moving any water.
A new raw water pump is over $500. Does anybody have any ideas about troubleshooting or fixing the old pump, or do I need to bite the bullet and replace it?
By pulling hoses I’ve isolated the problem down to the raw water pump. The hose going into the pump gushes water, but only a tiny trickle comes out of the pump. I’ve changed the impeller twice, but that’s not the problem. I can see the shaft turning inside the pump housing, but it’s not moving any water.
A new raw water pump is over $500. Does anybody have any ideas about troubleshooting or fixing the old pump, or do I need to bite the bullet and replace it?