Thread: Impeller change
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Old 03-23-2017, 09:15 AM   #43
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City: League City, Tx
Country: Texas
Vessel Model: Carver 356
Join Date: Oct 2007
Posts: 6,360
Originally Posted by Bigsfish View Post

I had a pair of Cats that loved eating impeller blades, they ended up some place in the heat exchanger and only when it would overheat could I find them by pulling the heat exchanger. The Cummins seem to all collect at the end cap so it's easy to get to them.
I am thinking the first stop on a Cummins is the aftercooler??....then the trans cooler....THEN the heat exchanger. At least that is how it is on my Classic B series.

I have the SMX pumps on my boat. So I change every 2 years. It is NOT a fun job on either engine. It is easier to pull the pump and do it rather than jack around down there with those little screws. And guess what??? I carry an entire spare pump assembly with a new impeller in it. Suck on that Ted!!!!
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