Question

technician a says that all metal-to-metal contact areas of the disc brake system should be lubricated with special brake grease for proper operation. technician b says that the lubrication helps reduce brake noise (squeal). which technician is correct?
technician a only
technician b only
both technicians
neither technician
question 7
1 pts
after a disc brake pad replacement, the brake pedal went to the floor the first time the brake pedal was depressed. the most likely cause was ______.
improper disc brake pad installation
normal operation
lack of proper lubrication of the caliper slides
air in the lines

Explanation:

First Question (Technician A and B)

• Technician A: Metal - to - metal contact areas in disc brake systems (like caliper slides, pad shims) need special brake grease for smooth operation (prevents binding, wear).
• Technician B: Lubrication reduces vibration between metal parts, which causes brake squeal. So both statements are correct.

• Improper pad installation: Unlikely to cause pedal to floor directly.
• Normal operation: Brake pedal shouldn't go to floor after pad replacement.
• Lack of caliper slide lubrication: Causes binding, not pedal to floor.
• Air in lines: Air is compressible. When brake system is opened (for pad replacement), air can enter. First depression compresses air, making pedal go to floor.

Answer:

Both technicians

Question 7 (Brake Pedal to Floor)