Which items are checked during the daily pre-operational inspection of a mobile crane?

• A. The weather forecast for the lift window
• B. The operator's personal schedule
• C. Tires/tracks, fluid levels and leaks, battery/electrical system, hydraulic hoses and fittings
• D. The color of the load chart

Answer: (C)

Daily pre-operational inspections focus on the crane’s safety-critical systems and conditions that could affect stability and control. The items checked—tires or tracks for wear and proper inflation or tension, fluid levels (engine oil, hydraulic fluid, coolant, fuel) and any signs of leaks, and the battery and electrical system plus hydraulic hoses and fittings—are the components that, if faulty, can directly cause unsafe operation or sudden equipment failure. Ensuring tires/tracks are sound maintains footing and balance; proper fluid levels and no leaks prevent loss of lubrication, cooling, or hydraulic pressure that power lifting and movement; a healthy battery and clean electrical system keep controls and safety interlocks functioning; and inspecting hydraulic hoses and fittings prevents high-pressure failures that could release uncontrolled pressure or fluids.

Other listed items aren’t about the crane’s immediate mechanical readiness. The weather forecast affects planning but isn’t part of the daily check of the machine itself; the operator’s personal schedule isn’t a safety indicator; the color of the load chart isn’t a measure of operating safety or readiness.