Question

Technician A says inspecting the operation of the automatic emergency brake system helps determine whether the spring brakes will apply during a loss of system pressure. Technician B says the inspection also helps identify whether several controlled applications of the brake pedal can be used to help slow a vehicle with a sudden severe drop in air pressure. Who is correct?

Answer 1

Answer: Both Technicians

Explanation:

When testing a spring break it is advisable to Step on and off the brake, with the engine off, the parking brake knob is expected to pop out when air pressure falls between 20-40 psi.

Go under the vehicle and pull the spring brakes.

Turn on the engine back and pump the brake pedal down to the floor. To test the spring breaks