During the in-cab inspection after starting the engine, a commercial motor vehicle driver must verify that all gauges and controls function within safe regulatory limits. Match each in-cab item with its correct normal operating standard or inspection criterion.
- Engine Oil Pressure GaugeMust begin rising to normal operating range within seconds after starting the engine.
- Voltmeter / Electrical GaugeMust indicate that the alternator is actively charging the electrical system within the normal range.
- Engine Coolant Temperature GaugeMust climb gradually to the manufacturer's normal operating range without overheating.
- Power Steering Wheel Free PlayMust not turn more than approximately 10 degrees (about 2 inches on a 20-inch wheel) before wheels move.
Answer
Engine Oil Pressure Gauge matches with rising within seconds after starting the engine; Voltmeter / Electrical Gauge matches with indicating active alternator charging; Engine Coolant Temperature Gauge matches with climbing gradually to normal operating range; Power Steering Wheel Free Play matches with not exceeding approximately 10 degrees before front wheels move.
Each instrument and control checked during an in-cab inspection has a specific operating threshold: oil pressure builds within seconds of start-up, the voltmeter confirms the alternator is charging, the coolant temperature climbs smoothly to normal operating range, and steering wheel free play does not exceed 10 degrees.
Step-by-Step Solution
Key Concept
In-Cab Instrument and Control Verification during Engine Start
Estimated Time:1m 0s