In brake adjustments, Technician A states that rear brake shoes should be adjusted before adjusting the parking brake. Technician B believes the parking brake lever must be disengaged first. Who is correct?

• A. Technician A only
• B. Technician B only
• C. Both Technician A and Technician B
• D. Neither Technician A nor Technician B

Answer: (A)

Technician A's statement about adjusting the rear brake shoes before adjusting the parking brake is correct. In the braking system, the rear brake shoes and the parking brake work together, but the adjustment sequence is crucial for optimal performance. Adjusting the rear brakes first ensures that the shoes are correctly positioned relative to the drum, which is essential for proper braking action. Once the rear brakes are adjusted, the parking brake can then be set to the correct tension, which allows it to function effectively without putting undue strain on the braking system.

Technician B's belief that the parking brake lever must be disengaged first is not entirely accurate in the context of this process. While it's important to ensure that the parking brake is in an appropriate state during adjustment, the priority should be to ensure that the rear brakes are properly adjusted first to establish the correct foundation for all braking functions, including that of the parking brake.

Therefore, the reasoning behind Technician A's approach aligns with proper brake adjustment procedures, affirming the correctness of the answer provided.