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How to prepare for a diesel you can depend on

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How to prepare for a diesel you can depend on


Leaks can develop spontaneously during winter storage (left). On belts, look for signs of deterioration (right).
Courtesy Steve D’Antonio

The only thing worse than overused machinery is underused machinery, and a sailing vessel’s auxiliary engine is likely, perhaps hopefully, already underused under normal circumstances. One of the most familiar refrains I hear from boat owners, after a failure is, “It was working fine.” Indeed, most equipment won’t telegraph a warning in advance of its failure.  

It’s not uncommon for engines to develop issues after the offseason layup, shortly after being placed back in service. Many of these issues can be prevented with regular maintenance and inspections.

Impellers for raw-water pumps are the most common failure items after layup. This can be easily avoided by replacing them every year at spring commissioning. Impellers are relatively inexpensive, the peace of mind afforded by their annual ­replacement, regardless of hours accumulated, is well worth the price. Replace your impeller ,…



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