Missing Impeller blades

mtnandy

Member
Nov 24, 2008
125
Smith Mountain Lake VA.
Boat Info
400da sundancer
Engines
Cat 3116 Diesel
Cat 3116 , Recently cleaned out my heat exchangers by removing the supply hose at he inlet and I was able to get out about 2/3 of a impeller worth of blades --- from each engine. Wow !!!! Now I am wondering what's in the oil cooler ! And in the westerbeke 8tbd . Anyone know how to access the oil cooler ? Will I loose the oil if I remove a end cap.,
Also on the generator heat exchanger , when the end clean out cap is removed , will I loose the coolant ?
 
No coolant to lose on the heat exchanger since it’s a closed circuit. You don’t access the oil cooler as the impeller pieces won’t get past the heat exchanger.

My 3116’s ate an impeller two years ago. I was amazed that the engine still cooled and pushed water with three blades.

My westy has similar issues but will not cool if the impeller is trashed.
 
No coolant to lose on the heat exchanger since it’s a closed circuit. You don’t access the oil cooler as the impeller pieces won’t get past the heat exchanger.

My 3116’s ate an impeller two years ago. I was amazed that the engine still cooled and pushed water with three blades.

My westy has similar issues but will not cool if the impeller is trashed.
there is actually a 2nd hose,off the intake pump that goes to the oil cooler that sits on top of the v drive
 
Last edited:

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