Before operating a heavy diesel generator, technicians must perform a systematic startup inspection. First, verify that the fuel shutoff valve is fully open. Next, inspect the primary coolant level in the expansion tank and top it off if necessary. Prior to engaging the starter motor, turn on the glow plugs for twenty seconds to preheat the combustion chambers. Finally, turn the ignition key to start the engine and immediately check the oil pressure gauge for a normal reading.
According to the passage, which action must be performed immediately before engaging the starter motor?
- AVerify that the fuel shutoff valve is fully open
- BCheck the oil pressure gauge for a normal reading
- Turn on the glow plugs for twenty secondsAnswer
- DInspect the primary coolant level in the expansion tank
Answer
Turn on the glow plugs for twenty seconds
The passage uses the explicit chronological indicator 'Prior to engaging the starter motor' to state that turning on the glow plugs for twenty seconds must take place immediately before that step.
Step-by-Step Solution
Key Concept
Extracting chronological sequences using explicit transition markers
Estimated Time:45s