During a service test, which of the following is not typically checked?

In the context of a service test for fire apparatus, the focus is primarily on the operational readiness and performance of the pump and associated components. The items that are typically checked include the integrity of the pump casing, pressure gauges, and flow rate, as these directly impact the functionality and effectiveness of the firefighting equipment.

Pump casing integrity is crucial as it ensures that there are no leaks, which could affect the pressure and operation during an emergency situation. Pressure gauges are also vital, as they provide real-time information about the working pressure of the system, ensuring that it is within safe and effective operating ranges. The flow rate is important to assess whether the apparatus can deliver the necessary amount of water to suppress a fire effectively.

Fuel consumption, while it is an important factor in the overall operational readiness of any vehicle, is not typically a part of the standardized service test for fire apparatus. Instead, focus during the service test remains on the pumping capabilities and performance characteristics necessary for effective firefighting. Consequently, checking fuel consumption isn't a standard part of the assessment process aimed at evaluating the fire pump's immediate functionality.