What is a routine check that driver/operators must perform regarding the automatic transmission fluid?

Driver/operators must perform a hot and cold check on the automatic transmission fluid to ensure it is within the proper operating range and to verify that it is at the correct level. This involves measuring the fluid level when the transmission is at normal operating temperature (hot) and again when cold. The temperature of the fluid can significantly affect its viscosity and performance; therefore, checking both conditions provides a complete picture of the transmission's health and operation.

Additionally, this practice helps to identify any potential issues with the transmission system early on, ensuring that the apparatus remains functional and safe for operation. It is particularly important in the context of aerial fire apparatus, which must perform reliably under various conditions during emergency response scenarios.