Thread: Impeller change
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Old 03-23-2017, 09:37 AM   #44
North Baltic sea
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Country: Finland
Vessel Model: Nordic Tug 37
Join Date: Sep 2015
Posts: 935
Originally Posted by Baker View Post
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!!!!

I changed just my Cummins SMX pumps and their impeler. I think smx impeller is considerably more flexible / softer rubber than Sherwood. do you have the experience to compare smx impeler vs Sherwood impeler resistance?
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