When assembling the drill motor, what should be done after sliding the drill stop and drill guide onto the drill bit?

When assembling the drill motor, securing the bit in the drill motor chuck after sliding the drill stop and drill guide onto the drill bit is essential for ensuring safe and effective operation. This sequence is critical because the drill bit must be properly secured before any operation can occur. Properly clamping the bit allows for maximum torque transfer and prevents slippage during use, which could lead to inaccurate drilling or unintended tool movement that could be dangerous.

In this context, securing the bit in the chuck involves tightening it sufficiently to hold the bit firmly in place, ensuring that it spins with the motor without risk of dislodging during operation. Only after the bit is securely fastened can the drill be safely activated, allowing for precision and control while drilling.

The other options suggest actions that either occur at the wrong time or can compromise safety. Turning on the drill before securing the bit (immediately or while the bit is loose) could lead to accidents, as a loose bit may spin freely and not perform effectively. Similarly, performing actions before securing the bit might lead to inadequate preparation and greater risk during the drilling process. Proper sequence and procedure in tool operation are crucial aspects of safe and effective practices in aerospace assembly and maintenance.