Engineering · Diesel — Starting
Before starting a main diesel engine after an extended shutdown, you should first:
- AEngage the clutch and apply load
- BOpen indicator (test) cocks and turn the engine over to check for water/hydraulic lock✓ Correct
- CDisable the overspeed trip
- DClose the jacket-water valves
Explanation
Opening indicator cocks and barring/blowing the engine over clears any liquid that may have collected in a cylinder, avoiding a hydraulic lock that could bend a rod or crack a head.
Authority: Diesel Engines (USCG engineering topic)
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