Auto 172 - Chapter 54

B

How much brake fluid is in a typical master cylinder reservoir? a. One gallon b. Enough to allow all brakes to become completely worn c. 15 to 20 liters d. One pint

A

If the brake pedal linkage is not adjusted correctly, brake fluid may not be able to expand back into the reservoir through the _________ port of the master cylinder when the brakes get hot. a. Vent port (forward hole) b. Replenishing port (rearward hole)

C

Two technicians are discussing a problem where the brake pedal travels too far before the vehicle starts to slow. Technician A says that the brakes may be out of adjustment. Technician B says that one circuit from the master cylinder may be leaking or defective. Which technician is correct? a. Technician A only c. Both Technicians A and B b. Technician B only d. Neither Technician A nor B

C

Two technicians are discussing master cylinders. Technician A says that it is normal to see fluid movement in the reservoir when the brake pedal is depressed. Technician B says a defective master cylinder can cause the brake pedal to slowly sink to the floor when depressed. Which technician is correct? a. Technician A only c. Both Technicians A and B b. Technician B only d. Neither Technician A nor B

A

What part in the master cylinder helps keep air from contacting the brake fluid yet allows the fluid level to drop as the disc brakes wear? a. Vent valve b. Compensating valve c. Residual valve d. Rubber diaphragm or floating disc

C

Technician A says that the master cylinder should be checked for leaks and proper operation as part of a brake inspection. Technician B says that the brake pedal height and free play should be measured. Which technician is correct? a. Technician A only c. Both Technicians A and B b. Technician B only d. Neither Technician A nor B

D

The master cylinder brake fluid level being low can indicate what condition? a. A leak in the hydraulic system b. Worn disc brake pads c. Worn drum brake shoes d. Either a or b

B

What type of problem will be caused by air in the lines? a. Vibration in the brake pedal during stops b. Low spongy brake pedal c. Brake noise d. Hard brake pedal

A

The primary brake circuit fails due to a leak in the lines, leaving the rear section of a dual split master cylinder. Technician A says that the driver will notice a lower-than normal brake pedal and some reduced braking power. Technician B says that the brake pedal will "grab" higher than normal. Which technician is correct? a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor B

B

The vent port is also called the _________ port. a. replenishing c. taperd b. compensating d. any of the above