STATE BRAKE CERTIFICATION
QUESTIONS AND ANSWERS
j A cracked or torn vacuum diaphragm in a brake power booster would most likely cause: - a hard pedal
feel requiring very high pedal effort to stop
to test a vacuum power brake booster in the vehicle, you should pump the brake pedal at least 4 times,
hold the brake pedal depressed, and start the engine. the brake pedal should: - drop slightly and remain
firm
A mechanic finds gear lube inside both rear drums on a rear wheel drive vehicle. What is most likely the
cause of this problem? - a plugged axle
The rear brakes are dragging after having new linings installed and the drums machined. the most likely
cause is the: - technician use the parking brake to adjust shoes and the cable is stuck
While test driving a car, the mechanic finds that the right front brake "grabs". The most likely cause of
this problem is: - brake fluid or grease on the brake linings
Which of the following incorrect service procedures will cause brake lock-up? - master cylinder push rod
adjusted too long
Which of the following incorrect service procedures could cause brake pedal pulsation? - incorrect run-
out on the car brake lathe
A common cause of pedal pulsation during brake application is: - NOT caused by improperly torqued
wheels, damaged backing plates, or lubricated shims
A properly functioning load sensing proportioning valve will: - cause an increase in the hydraulic pressure
during braking at the rear wheel cylinders when the vehicle is loaded.
which of the following is a quick way to isolated a defective master cylinder? There are no external leaks
in the system. - pump up the brake pedal, then hold it firm. if the pedal slowly drops to the floor, the
master cylinder may be defective.
After rebuilding a master cylinder, the rod between the master cylinder and booster should be: -
adjusted properly
Upon inspecting brake fluid condition, the technician observes the diaphragm in the master cylinder cup
is swollen. Which of the following is the most likely cause? - silicone fluid added to the system
When inspecting brake fluid levels, a technician observes low fluid levels. which of the following should
be done first? - Inspect disc brake pads for excessive wear
QUESTIONS AND ANSWERS
j A cracked or torn vacuum diaphragm in a brake power booster would most likely cause: - a hard pedal
feel requiring very high pedal effort to stop
to test a vacuum power brake booster in the vehicle, you should pump the brake pedal at least 4 times,
hold the brake pedal depressed, and start the engine. the brake pedal should: - drop slightly and remain
firm
A mechanic finds gear lube inside both rear drums on a rear wheel drive vehicle. What is most likely the
cause of this problem? - a plugged axle
The rear brakes are dragging after having new linings installed and the drums machined. the most likely
cause is the: - technician use the parking brake to adjust shoes and the cable is stuck
While test driving a car, the mechanic finds that the right front brake "grabs". The most likely cause of
this problem is: - brake fluid or grease on the brake linings
Which of the following incorrect service procedures will cause brake lock-up? - master cylinder push rod
adjusted too long
Which of the following incorrect service procedures could cause brake pedal pulsation? - incorrect run-
out on the car brake lathe
A common cause of pedal pulsation during brake application is: - NOT caused by improperly torqued
wheels, damaged backing plates, or lubricated shims
A properly functioning load sensing proportioning valve will: - cause an increase in the hydraulic pressure
during braking at the rear wheel cylinders when the vehicle is loaded.
which of the following is a quick way to isolated a defective master cylinder? There are no external leaks
in the system. - pump up the brake pedal, then hold it firm. if the pedal slowly drops to the floor, the
master cylinder may be defective.
After rebuilding a master cylinder, the rod between the master cylinder and booster should be: -
adjusted properly
Upon inspecting brake fluid condition, the technician observes the diaphragm in the master cylinder cup
is swollen. Which of the following is the most likely cause? - silicone fluid added to the system
When inspecting brake fluid levels, a technician observes low fluid levels. which of the following should
be done first? - Inspect disc brake pads for excessive wear
