SOS MECHANIC CERTIFICATION UPDATED 2026
QUESTIONS AND ANSWERS SURE A+
✔✔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.
✔✔Why don't disc brake system usually need adjustment? - ✔✔A certain amount of
pressure is maintained by the metering valve
✔✔The front brakes of a car equipped with disc brakes in the front and drum brakes in
the rear, grab quickly as light pressure is applied to the brake pedal, which of the
following could be the cause of the problem? - ✔✔Defective metering valve
✔✔The brake warning light on the dash stays on all the time, which of the following
could be the cause of the problem? - ✔✔A problem in the hydraulic circuit
✔✔Which of the following would be the LEAST likely cause for an intermittent problem
in an ABS system? - ✔✔Open wheel sensor circuit
✔✔The brake lights on a car do not light when the brake pedal is depressed, which of
the following is the LEAST likely cause of the problem? - ✔✔A burned out bulb.
✔✔Which of the following incorrect service procedures could cause brake pedal
pulsation? - ✔✔incorrect run-out on the car brake lathe
✔✔What type of rotor surface provides the best braking with new pads? - ✔✔A smooth,
flat surface
✔✔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.
, ✔✔A common cause of pedal pulsation during brake application is: - ✔✔NOT caused
by improperly torqued wheels, damaged backing plates, or lubricated shims
✔✔the car is at reset. When you slowly apply the brake pedal you hear a squeaking
noise at the rear of the vehicle. what could cause this noise? - ✔✔dry backing plate
contact surfaces
✔✔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
✔✔Wheel speed sensors: - ✔✔send an A/C signal to the control module
✔✔Which of the following incorrect service procedures will cause brake lock up? -
✔✔Master Cylinder push rod adjusted too long
✔✔During a road test, you find that when normal breaking pressure is applied the pedal
slowly goes to the floor. What is the likely cause of this problem? - ✔✔A leaking master
cylinder primary piston seal.
✔✔Before replacing a hydralic brake hose on an ABS equipped vehicle, you should
first: - ✔✔relieve brake system pressure according to manufacturer procedures
✔✔When would the pump motor be activated in an anti-lcok brake system with traction
assist? - ✔✔when brake pedal pulsates
✔✔There is a scraping sound coming from one rear brake. The sound stops when the
brakes are applied. What is most likely the cause of the problem? - ✔✔a broken shoe
hold-down spring or pin
✔✔If a drum brake self-adjuster seizes up, the likely result will be: - ✔✔NOT a low
pedal, worn or brake drum, or a loose emergency brake cable.
✔✔After drum brakes have been applied and released, the brake fluid returns to the
master cylinder reservoir. What causes it to return? - ✔✔brake shoe return springs
✔✔On a single anchor duo-servo drum brake system, which shoe does most of the
braking? - ✔✔secondary shoe
✔✔Which lining does most of the braking on a leading/trailing brake? - ✔✔primary shoe
✔✔This tool is used to? - ✔✔Adjust the brake shoes to the drum
QUESTIONS AND ANSWERS SURE A+
✔✔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.
✔✔Why don't disc brake system usually need adjustment? - ✔✔A certain amount of
pressure is maintained by the metering valve
✔✔The front brakes of a car equipped with disc brakes in the front and drum brakes in
the rear, grab quickly as light pressure is applied to the brake pedal, which of the
following could be the cause of the problem? - ✔✔Defective metering valve
✔✔The brake warning light on the dash stays on all the time, which of the following
could be the cause of the problem? - ✔✔A problem in the hydraulic circuit
✔✔Which of the following would be the LEAST likely cause for an intermittent problem
in an ABS system? - ✔✔Open wheel sensor circuit
✔✔The brake lights on a car do not light when the brake pedal is depressed, which of
the following is the LEAST likely cause of the problem? - ✔✔A burned out bulb.
✔✔Which of the following incorrect service procedures could cause brake pedal
pulsation? - ✔✔incorrect run-out on the car brake lathe
✔✔What type of rotor surface provides the best braking with new pads? - ✔✔A smooth,
flat surface
✔✔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.
, ✔✔A common cause of pedal pulsation during brake application is: - ✔✔NOT caused
by improperly torqued wheels, damaged backing plates, or lubricated shims
✔✔the car is at reset. When you slowly apply the brake pedal you hear a squeaking
noise at the rear of the vehicle. what could cause this noise? - ✔✔dry backing plate
contact surfaces
✔✔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
✔✔Wheel speed sensors: - ✔✔send an A/C signal to the control module
✔✔Which of the following incorrect service procedures will cause brake lock up? -
✔✔Master Cylinder push rod adjusted too long
✔✔During a road test, you find that when normal breaking pressure is applied the pedal
slowly goes to the floor. What is the likely cause of this problem? - ✔✔A leaking master
cylinder primary piston seal.
✔✔Before replacing a hydralic brake hose on an ABS equipped vehicle, you should
first: - ✔✔relieve brake system pressure according to manufacturer procedures
✔✔When would the pump motor be activated in an anti-lcok brake system with traction
assist? - ✔✔when brake pedal pulsates
✔✔There is a scraping sound coming from one rear brake. The sound stops when the
brakes are applied. What is most likely the cause of the problem? - ✔✔a broken shoe
hold-down spring or pin
✔✔If a drum brake self-adjuster seizes up, the likely result will be: - ✔✔NOT a low
pedal, worn or brake drum, or a loose emergency brake cable.
✔✔After drum brakes have been applied and released, the brake fluid returns to the
master cylinder reservoir. What causes it to return? - ✔✔brake shoe return springs
✔✔On a single anchor duo-servo drum brake system, which shoe does most of the
braking? - ✔✔secondary shoe
✔✔Which lining does most of the braking on a leading/trailing brake? - ✔✔primary shoe
✔✔This tool is used to? - ✔✔Adjust the brake shoes to the drum
