When testing the operation of all compartment doors during PDI, what action should be taken as necessary?

Lubricating the compartment doors during a Pre-Delivery Inspection (PDI) is essential to ensure smooth operation and functionality. Proper lubrication minimizes friction, which can cause wear and malfunction of the door mechanisms over time. This maintenance step is important for enhancing the lifespan of the doors and maintaining ease of access, which is critical for safety and efficiency.

When compartment doors are well-lubricated, they open and close more easily, which is crucial in emergency situations or for routine usage. This practice also helps in identifying any potential mechanical issues early on, such as misalignment or damaged hardware, which should be addressed to prevent further complications.

In contrast, repainting the doors, replacing the handles, or securing the locks are actions that might be necessary in specific situations, but they do not directly address the immediate functionality and mechanical operation concerns that lubrication does. Hence, lubrication is a foundational maintenance action that should be prioritized during testing.