Download Michigan State Brakes Certification Exam Questions and Answers and more Exams Mechanics in PDF only on Docsity!
MICHIGAN STATE BRAKES CERTIFICATION
EXAM QUESTIONS AND ANSWERS
"The brake warning light on the dash stays on all the time, which of the following could be the cause of
the problem? - CORRECT ANSWER A problem in the hydraulic circuit"
"What type of rotor surface provides the best braking with new pads? - CORRECT ANSWER A smooth,
flat surface" "After drum brakes have been applied and released, the brake fluid returns to the master cylinder
reservoir. What causes it to return? - CORRECT ANSWER brake shoe return springs"
"A cracked or torn vacuum diaphragm in a brake power booster would most likely cause: - CORRECT
ANSWER a hard pedal feel requiring very high pedal effort to stop"
"A mechanic finds gear lube inside both rear brake drums on a rear wheel drive vehicle. What is the
most likely cause of this problem? - CORRECT ANSWER A plugged axle"
"Which of the following incorrect service procedures will cause brake lock-up? - CORRECT ANSWER
master cylinder push rod adjusted too long"
"Which of the following describes the proper way to depressurized an ABS system? - CORRECT
ANSWER Pump the brake pedal at least 25 times (or more, depending on the manufacturer's
recommendation) with the ignition off." "The rear brakes are dragging after having new linings installed and the drums machined. the most likely
cause is the: - CORRECT ANSWER technician use the parking brake to adjust shoes and the cable is
stuck"
"When turning brake drums: - CORRECT ANSWER use a dampening strap to reduce chatter"
"Which of the following is NOT a necessary drum brake measurement? - CORRECT ANSWER run-out"
"On a 3-channel system, which wheels are on the same circuit? - CORRECT ANSWER both rear wheels"
"One way to test an ABS wheel speed signal is to use _____ on your digital multimeter. - CORRECT
ANSWER AC volts"
"The key input for the ABS control module comes from the: - CORRECT ANSWER wheel speed sensors"
"ABS speed sensor and sensor rings: - CORRECT ANSWER should not be hammered or tapped on and
should always be replaced as a matched set"
"Which of the following could be a symptom of over-torqued lug nuts? - CORRECT ANSWER A brake
pedal pulsation during braking."
"You are rebuilding a master cylinder. What should you use to lubricate the internal parts? - CORRECT
ANSWER Brake fluid"
"A car has a spongy pedal. Which of the following could be the cause? - CORRECT ANSWER Air in the
system."
"Flexible brake hoses should be replaced: - CORRECT ANSWER when dampness is evident on the hose"
"Which of the following should be used to check for rotor thickness variation: - CORRECT ANSWER
Micrometer"
"After rebuilding a master cylinder, the rod between the master cylinder and booster should be: -
CORRECT ANSWER 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? - CORRECT ANSWER 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? - CORRECT ANSWER Inspect disc brake pads for excessive wear"
"Which of the following is true about most properly functioning anti-lock brake systems? - CORRECT
ANSWER The brakes may lock up at speeds less than 10 miles per hour"
"Which of the following is true about bleeding brake lines on most ABS equipped vehicles? - CORRECT
ANSWER Most ABS brake lines can be bled like a conventional (non-ABS) system. However, caution
must be taken because of the extreme pressure."
"Most anti-lock brake systems require the removal of the pressure modulator fuse when: - CORRECT
ANSWER a "spaced-saver" spare tire is being used and mismatched tires are being installed"
"What does a load sensing proportioning valve do? - CORRECT ANSWER It increases the hydraulic
pressure during braking at the rear wheel cylinders when the vehicle is loaded" "The brakes of a car squeal each time they are applied, which of the following is the LEAST likely source
of the noise? - CORRECT ANSWER Glazed brake pads"
"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? - CORRECT ANSWER A leaking master cylinder primary
piston seal."
"Before replacing a hydralic brake hose on an ABS equipped vehicle, you should first: - CORRECT
ANSWER relieve brake system pressure according to manufacturer procedures"
"When would the pump motor be activated in an anti-lcok brake system with traction assist? -
CORRECT ANSWER 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? - CORRECT ANSWER a broken shoe hold-down spring or
pin"
"If a drum brake self-adjuster seizes up, the likely result will be: - CORRECT ANSWER NOT a low pedal,
worn or brake drum, or a loose emergency brake cable."
"On a single anchor duo-servo drum brake system, which shoe does most of the braking? - CORRECT
ANSWER secondary shoe"
“Most 1995 & newer vehicles use which of the following types of wheels bearings on non-drive wheel? -
CORRECT ANSWER Sealed non-serviceable"
"You are installing a set of brake shoe linings that are not the same length. Traditionally, the primary
shoe lining is: - CORRECT ANSWER Smaller and goes towards the front of the car."
"Which lining does most of the braking on a leading/trailing brake? - CORRECT ANSWER primary shoe"
"This tool is used to? - CORRECT ANSWER Adjust the brake shoes to the drum"
"Which of the following describes the proper sequence to bleed brake lines on most rear wheel drive
vehicles: - CORRECT ANSWER RR, LR, RF, LF"
"In disc brake caliper assemblies, the "square cut seal" is usually located: - CORRECT ANSWER In the
caliper piston bore"
"When performing a caliper overhaul, what would you use to remove the pistons from the calipers? -
CORRECT ANSWER Compressed air"
"Sliding caliper disc brake pads are kept in adjustment by the - CORRECT ANSWER Square cut piston
seal"
"When the brakes are applied on a car with disc-drum brakes, a vibration or pulsating movement is felt.
What can cause this problem? - CORRECT ANSWER A rotor thickness variation"
"A rattle is a single piston disc brake assembly which goes away when the brakes are applied is most
likely a result of: - CORRECT ANSWER Loose pads in the caliper"
"Which of the following would most likely cause dragging brakes? - CORRECT ANSWER A defective
vehicle load sensor"
"Which of the following can be used to check for rotor thickness variation? - CORRECT ANSWER Dial
indicator" "On a vehicle with a disc/drum brake system, the rear wheels lock up under hard braking. The most
likely cause is: - CORRECT ANSWER A defective proportioning valve"
"After putting a bearing race in a hub, you notice that the new race is loose and can spin in the hub.
What should you do? - CORRECT ANSWER Replace the hub"
"When adjusting disc-drum brakes, you should: - CORRECT ANSWER Adjust the rear brakes after
releasing the parking brakes" "Which of the following describes the correct sequence for bleeding brake lines on most front wheel
drive vehicles? - CORRECT ANSWER RR,LR, RF, LF"
"All of the following are steps in the procedure for servicing a typical dual master cylinder, EXCEPT: -
CORRECT ANSWER Clean the master cylinder with a degreasing solvent"
"The brakes of a car tend to drag, which of the following could be the cause? - CORRECT ANSWER A
stuck wheel cylinder or caliper piston"
"When repairing damaged brake line, which of the following is correct? - CORRECT ANSWER Replace
entire line that is damaged with a new line bent to the right shape using a tube bender" "A car has an excessive amount of pedal travel during brake application, which of he following could be
the cause? - CORRECT ANSWER Excessive clearance between the shoes and drum."
"All of the following procedures, EXCEPT one describe the correct method for bleeding the individual
brakes on a car after the master cylinder has been bled: - CORRECT ANSWER The bleeding sequence
for all systems begins with the left rear wheel."
"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: - CORRECT ANSWER
drop slightly and remain firm" "There is a scraping sound coming from one rear brake. The sound stops when the brakes are applied.
What is the likely cause of the problem? - CORRECT ANSWER A broken shoe hold-down spring or pin"
"Which of the following is the most likely cause of low fluid level in the master cylinder? - CORRECT
ANSWER Worn brake pads and linings"
"A customer complains that the brake pedal slowly moves to the floor when a steady pressure is applied. There is no sign of fluid leakage. Which of the following is the most portable cause of the
problem? - CORRECT ANSWER A worn primary cup"
