recovering broken impeller

[openseas]

Hi All,
Last year, I ran the engine without water by accident for few minutes, and I believe that impeller in the water pump had some pieces fractured, and moved the cooling system.
Is there a way to remove these pieces, and where I should look for them.
The engine is Yanmar 2QM15.
Thanks,

Andy

[model 10]

The heat exchanger would be the first and perhaps the last place to look. Do you have one of those stupid sounding "cuff" things? Beware!

[Cuttyhunk]

Yes, probably the heat exchanger; very small needle nose pliers or surgical clamps can be very handy. I also have some dental picks, but you have to spear the rubber with those and very carefully drag it to where you can grab it with the clamps.

PS: if you still have the rest of that impeller, match up what you find and keep looking until you have all the pieces.

[DeepFrz]

Small pieces might go through the heat exchanger and lodge in the mixing elbow.

[belizesailor]

Good periodic maintenance anyway to inspect and clean heat exchanger.

[RDW]

Be sure and look in the other direction. The pieces can fall down. I looked thru everything forward, down stream only to find the pieces in full view up stream.
rdw

[wingless]

On my boat the impeller bits get trapped at the inlet to the first impeller.

On my boat the easiest / fastest way to collect the bits is to reverse-flush the cooler.