Final Answer:
Technician A is correct. Alternator rear bearings are often secured in place with a small plate and screws, while Technician B is incorrect, as alternator front bearings are typically press-fit.
Step-by-step explanation:
Technician A accurately notes that alternator rear bearings are commonly held in position by a small plate and screws. This design facilitates easier replacement of the rear bearings when necessary. On the other hand, Technician B's statement is incorrect because alternator front bearings are typically press-fit, meaning they are assembled into place with pressure, eliminating the need for screws or plates. Press-fit bearings are commonly used in various automotive components to ensure a secure and stable fit.
Understanding the specific methods for securing front and rear bearings is crucial for effective diagnosis and maintenance of automotive alternators.