While replacing a front brake hose, Technician A suggests connecting the end to the caliper first. Technician B states that a new copper sealing washer must be used. 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: (B)

Technician B is correct because when replacing a front brake hose, it is essential to use a new copper sealing washer when connecting the brake hose to the caliper. Copper sealing washers are designed to ensure a leak-proof seal at the connection point. Over time, the old washer may become flattened or damaged, compromising its ability to create a proper seal, which could lead to brake fluid leaks and reduced braking performance.

In contrast, while Technician A suggests connecting the end to the caliper first, this approach may not be universally applicable or recommended based on the specific vehicle manufacturer's procedures. The order of connection can vary, and the emphasis should be placed on ensuring that every connection is secure and leak-free, which highlights the importance of using a new sealing washer as stated by Technician B. Therefore, the critical point lies in the necessity of replacing the copper sealing washer to maintain brake system integrity.