🔍 Key Concepts

• Starting procedures for medium-speed diesel engines and why engines are barred/turned prior to start • Purpose of indicator cocks on a diesel engine (what do they let you check?) • Consequences of liquid in a cylinder when you try to start the engine

💭 Think About

• Ask yourself: before putting fuel and full starting air to the engine, what simple step helps you detect if a cylinder has water or oil in it? • Which option is a normal, routine pre-start check, and not an occasional maintenance task like changing filters or topping tanks? • Which procedure directly helps prevent mechanical damage like a bent connecting rod from hydraulic lock?

✅ Before You Answer

• Identify which choice is specifically about slowly turning the engine before start rather than about maintenance or adjustments • Think about how indicator cocks relate to checking each cylinder for free movement and no water accumulation • Verify which step is commonly required in diesel engine manufacturer’s pre-start checklist for medium-speed engines