Question

two technicians are discussing proper cleaning of the hub and rotor surfaces, before starting the match machining process. technician a says that if the rotor is secured to the hub from the factory using two small screws/bolts or retainers that there is no need to remove the rotor and clean behind it. technician b says that if the vehicle has captive rotors (such an early 1990 honda accord) and there is no need to disassemble the rotor hub assembly for cleaning purposes. who is correct? technician a technician b both technician a and technician b neither technician a nor technician b

Explanation:

Proper cleaning of hub and rotor surfaces is crucial for match - machining. Debris behind the rotor can affect performance even if it is factory - secured with screws/bolts or retainers (contradicting Technician A). Also, for captive rotors, it may still be necessary to check and clean the hub - rotor interface, so disassembly might be required in some cases (contradicting Technician B).

Answer:

Neither Technician A nor Technician B