Final answer:
Removing the spring brake actuator involves caging the power spring and ensuring minimum air pressure.
Step-by-step explanation:
Removing the spring brake actuator in automotive technology requires caging the power spring to ensure it doesn't release its energy unexpectedly. This is done by securing the power spring in a compressed position, preventing it from expanding and causing potential injury. Minimum air pressure is also necessary to safely remove the actuator. Without sufficient air pressure, the brake chamber may not release the power spring.