USCG Exam PracticeMaintenance, machine tools, drawings, and tables
Before performing any internal maintenance work on a diesel engine, which sequence of precautions is required?
- A. Reduce load to idle, isolate fuel only, and post a watch
- ✓ Stop the engine, cool it, isolate starting air and fuel, and engage the turning gearCorrect
- C. Stop the engine, isolate starting air only, and lock the throttle
- D. Reduce load to idle, cool the engine, and engage the turning gear without isolating fuel
Why B is correct
NAVEDTRA 14075 §3-1 specifies that before any internal work the engine is stopped, cooled, the starting air and fuel are isolated, and the turning gear is engaged so it cannot roll. All four elements are required.
Cited:NAVEDTRA 14075 §3-1