ASE Brakes

Neither

Tech A says that while testing a vacuum booster, the pedal should not drop when the engine is started. Tech B says that the pressure supplied to the vacuum booster should be about 10 in Hg lower than engine manifold vacuum. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech A only

Tech A says that with the engine running and the brakes applied, the brake pedal should hold its position. Tech B says that bench bleeding a master cylinder no longer saves time during replacement and is unnecessary. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Both

Tech A says that you should start the lug nuts on the wheel studs by hand first and make sure the lug nut's surface matches the mating surface of the wheel. Tech B says that you should lower the vehicles so the tires are partially on the ground to keep them from turning while tightening the lug nuts. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech B only

Technician A says that a higher coefficient of friction typically results in less wear of the brake lining material. Technician B says that friction between the tire and road surface is sometimes referred to as traction. Who is Correct? A. Tech A only B. Tech B only C. Both D. Neither

Both

A hydraulic brake booster is being discussed. Tech A states that a broken power steering belt could cause the brake booster to stop creating brake assist. Tech B states that some hydraulic brake boosters use an electric motor to create hydraulic pressure for the booster. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech B only

A hydraulic brake system is being discussed. Tech A states that a leaking brake line could be repaired with a new section of copper tubing. Tech B states that when fabricating a new brake line, a tubing bender should be used. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech A only

A hydraulic brake system is being discussed. Tech A states that brake fluid must have a high boiling point since brakes create a lot of heat. Tech B states that hygroscopic means that brake fluid will not absorb water. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Neither

A hydraulic brake system is being discussed. Tech A states that the brake master cylinder functions as an output piston. Tech B states that the single master cylinder has replaced the tandem master cylinder for increased safety. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech B only

A metering valve is being discussed. Tech A states that a defective metering valve could cause the rear brakes apply too quickly. Tech B states that a defective metering valve could cause grabby front brakes. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech B only

A parking brake is being discussed. Tech A states that the parking brake typically applies the rear drum brakes hydraulically. Tech B states that drum brakes require less force to apply as a parking brake than disc brakes because of their self-energizing action. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Incorrect pushrod adjustment

A vacuum booster that leaks vacuum may cause all of the following except: A. A lean running engine B. Incorrect pushrod adjustment C. A rough idling engine D. Immediate loss of power brakes when the engine stalls

Tech B only

A vehicle comes in the shop with brake-related complaints. Tech A states that the brake system is normally split 50% front and 50% rear on front-wheel-drive vehicles. Tech B states that malfunctioning brake lights can be caused by a misadjusted brake light switch at the brake pedal. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Both

A vehicle comes in to the shop with a red brake warning light illuminated. Tech A states that the parking brake could be applied or malfunctioning. Tech B states that there could be unequal pressure in the hydraulic brake system. Who is correct?

Ratchet

A vehicle equipped with rear disc brakes and a pedal-actuated rear parking brake is likely to be operated by a cable and ___. A. Cylinder B. Ratchet C. Spoke lock D. Parking pawl

Both

A vehicle with a brake problem is being discussed; the rear wheels locks up when braking. Tech A states that the pressure-sensitive proportioning valve could be malfunctioning. Tech B states that the load-sensitive proportioning valve could require adjustment. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Both

A vehicle with drum rear brakes is being discussed. Tech A states that the self-adjusting mechanism often works to take up slack when stopping in reverse or by applying the parking brake. Tech B states that self-adjusters lengthen over time as the brake shoe linings wear. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Both

A wheel cylinder is being discussed. Tech A states that if the cylinder bore surface in a wheel cylinder is pitted, it should be replaced rather than honed. Tech B states that the purpose of a dust boot is to keep brake dust and moisture away from the piston and cylinder. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech A only

A wheel cylinder is being discussed. Tech A states that the wheel cylinder can be bolted or firmly clipped to the backing plate. Tech B states that most wheel cylinders are equipped with 1 piston and 2 bleeders. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Disc brake systems with low drag calipers

Quick take-up master cylinders are used on what systems? A. Disc brake systems with ABS B. Disc brake systems with low drag calipers C. Disc/drum split systems D. Front/rear divided systems

Neither

Rear drum brake types are being discussed. Tech A states that a duo-servo system benefits from servo action in forward only. Tech B states that the leading/ trailing shoe design produces maximum braking in forward only, so it is commonly found on heavy duty trucks. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Both

Tech A says that when using the brake pre-adjustment gauge, you should set the gauge to the drum diameter and lock it in place. Tech B says that you should place the pre-adjustment gauge over the center of the brake shoes during the adjustment process. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Power Booster

What system helps the driver apply the brakes by increasing the force applied to the master cylinder? A. power booster B. regenerative braking C. Brake-by-wire D. Band Brakes

Leading/Trailing shoe

What type of drum system is most likely to be found on the rear of a modern front-wheel drive vehicle? A. Twin leading shoe B. Leading/Trailing shoe C. Duo-servo D. Non-anchored

The drum must be replaced

A drum with a minimum thickness specification of 10.060" is measured at 10.070". Which of the following is most true? A. The drum can be machined another 0.010" B. The drum should be inspected and machined C. The drum can be reused if there are no grooves D. The drum must be replaced

Both

A brake system is being discussed. Tech A states that a soft or spongy pedal is a good indication that there could be air in the hydraulic system. Tech B states that engineers use different input and output piston sizes to precisely control brake unit output force. Who is correct? A. Tech A Only B. Tech B Only C. Both D. Neither

Neither

A brake booster is being discussed. Tech A states that most diesel vehicles are equipped with brake boosters that utilize the engines intake manifold vacuum. Tech B states that the purpose of the brake booster diaphragm is to allow air to be evacuated from the booster, but not to return. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Both

A brake caliper is being discussed. Tech A states that floating caliper guide pins and bushings must be lubricated with high-temperature grease when serviced. Tech B states that the caliper piston O-ring retracts the piston. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech B only

A brake repair is being discussed. Tech A states that drum brakes have less moving parts and are easier to replace than disc brakes. Tech B states that drum brakes that are misadjusted will have a low brake pedal height. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Apply

All of the following are examples of typical drum brake springs EXCEPT? A. Return B. Apply C. Specialty D. Hold-down

TCS disabled

All of there are factors that influence braking EXCEPT: a. Vehicle Weight B. Tire Condition C. Road Condition D. TCS Disabled

Tech B only

Tech A says that the size of the master cylinder pistons does not affect braking. Tech B says that valves may be used during hard braking to keep wheels from locking up. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Asbestos

Brake lining material dust may be hazardous to breather because it could contains ___. A. Carbon dioxide B. Carbon monoxide C. Gasoline vapors D. Asbestos

Neither

Brake pads are being discussed. Tech A states that brake pads should have the lowest coefficient of friction possible. Tech B states that brake pads are currently made of asbestos. Who is correct? A. Tech A only B. Tech b only C. Both D. Neither

Tech B only

Brake shoes are being discussed. Tech A states that some brake shoes have lining riveted to the backing and others are bolted. Tech B states that it is a common mistake for new technicians to install both primary shoes on one side of the vehicle, and both secondary shoes on the other side. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech A only

Drum brake springs being discussed. Tech A states that it is a good idea to leave one side of the vehicle together for reference while the first side is finished since the spring locations can be confusing. Tech B states that the return springs are generally soft and easy to install by hand. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Both

Drum brakes are being discussed. Tech A states that direct road spray to the brake shoes is prevented by a labyrinth seal in-between the drum and backing plate. Tech B states that the shoe to backing plate contact pad should be lightly greased during a brake service. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech A only

Drum brakes are being discussed. Tech A states that long downhill grades or heavy use can overheat drums. Tech B states that since drum brakes have more material, they are more resistant to overheating than disc brakes. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Toward the front of the vehicle

In a duo-servo drum brake system, in what location does the primary shoe belong? A. toward the front of the vehicle B. On the driver's side of the vehicle C. On the passenger side of the vehicle D. toward the rear of the vehicle

Tech A only

Tech A says that water fade changes the coefficient of friction between the brake linings and drums until they dry out. Tech B says that hydraulic fade is caused by brake caliper seals leaking fluid onto the rotors. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Adjusting nuts on the cables

How are park brakes commonly adjusted? A. adjusting nuts on the cables B. rotating an eccentric at the hand lever C. applying the service brakes in reverse D. topping off the master cylinder reservoir

Increase brake pressure under heavy breaking

How do pressure-sensitive proportionating valves affect the rear brakes? A. Increase brake pressure under light braking B. Increase brake pressure under heavy braking C. Decrease brake pressure under light braking D. Decrease brake pressure under heavy braking

It uses the pushrod length to increase the driver's pedal effort

How does the power brake assist the driver? A. It uses an outside source of force to increase the driver's pedal effort B. It recycles the brake fluid to increase the driver's pedal effort C. It uses a long lever to increase the driver's pedal effort D. It uses the pushrod length to increase the driver's pedal effort

the tapered seat

How is a wheel cylinder bleeder screw sealed? A. The piston seals B. The bleeder O-ring C. The tapered seat D. The bleed passage lip seal

Never

How often are disc brakes adjusted by a technician? A. Once per year B. At every oil change C. Every 30,000 miles D. Never

Is squared

If a moving vehicle doubles its speed, its kinetic energy __. A. doubles B. Tripled C. Is Squared D. Is multiplied by pi

0.020"

If a rotor is 0.040" thicker than the minimum thickness, how much metal can commonly be machined off each side before it should be discarded? A. 0.040" B. 0.020" C. 0.010" D. 0.005"

Worn pedal bushings

If the pedal height is incorrect on a nonadjustable pedal assembly, what could be the cause? A. Leaking master cylinder cup seals B. Misadjusted drum brake shoes C. Air in the hydraulic system D. Worn pedal bushings

Fluid with pressure in a closed system will transmit with no loss to other parts of the system

Pascal's law is behind the hydraulic principals that is applied to brakes. What is Pascal's law? A. Fluid with pressure in a part of a closed system will transmit higher pressure to other parts of the system B. Fluid with pressure in a closed system will transmit with no loss to other parts of the system. C. Fluid with pressure in a closed system will transmit with some loss to other parts of the system. D. Fluid with pressure in part of a closed system will transmit with some loss to other parts of the system

Test drive the vehicle with the customer to gain a clear understanding of the concern

Some hydraulic brake concerns can be hard to identify. What should be done if you can't verify the problem? A. Tell the customer there is nothing wrong and give the vehicle back B. Search the internet for a concern that sounds similar and diagnose that C. Replace each of the parts that might cause the customer concern D. Test drive the vehicle with the customer to gain a clear understanding of the concern.

Both

Tech A says that ABS prevents wheel lockup during hard braking. Tech B says that a TCS prevents tires from losing traction during acceleration. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech B only

Tech A says that a dial indicator is used to measure the thickness of the brake pad linings. Tech B says that a bench brake lathe is used to machine drums and rotors. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Both

Tech A says that a vehicle changes chemical energy into kinetic energy. Tech B says that a vehicle's brake system changes kinetic energy into heat energy through friction. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Neither

Tech A says that brake-by-wire systems use braided steel cables instead of fluid to apply the brakes. Tech B says that regenerative braking uses friction to regenerate braking power. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech B only

Tech A says that disc brake vibrations are commonly caused by restricted brake lines or hoses. Tech B says that grabbing brakes could be caused by fluid leaking onto the linings. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech A only

Tech A says that disc brakes use friction linings attached to brake pads. Tech B says that disc brakes are mechanically operated. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Neither

Tech A says that drum brakes expand linings against a rotor to slow the vehicle. Tech B says that the power brake booster reduces the amount of force applied to the master cylinder. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech B only

Tech A says that excessive thickness variation typically causes metal-to-metal contact. Tech B says that excessive lateral runout tends to cause the steering wheel to shimmy. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Both

Tech A says that hubless rotors can be centered with an adapter that drives the rotor from the center hole. Tech B says that anti-chatter belts absorb vibration during the machining process to provide a smooth finish. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech B only

Tech A says that most manufacturers who allow rotors to be refinished prefer off-car machining in order to maximize runout tolerances. Tech B says that when a rotor is machined on the vehicle, it is refinished true to the hub. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech A only

Tech A says that on some vehicles the inboard pad is different from the outboard pad. Tech B says that when performing disc brake procedures, it is okay to let the calipers hang by the hoses. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech A only

Tech A says that over-torqued lug nuts can cause wheel studs to break. Tech B says that the hub and flange must be replaced if wheel studs break on most vehicles. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech B only

Tech A says that parking brakes are designed to stop a vehicle in an emergency. Tech B says that service brakes are used to slow and stop a vehicle safely. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Both

Tech A says that pumping the brake pedal after brake work is important to adjust the caliper pistons and avoid a potential accident. Tech B says to be careful not to lose the bleeder screw dust caps because they must be reinstalled. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Both

Tech A says that rotors should be marked when removed from the hub so that it can be reinstalled in the same position. Tech B says that hub-style rotors may need a new grease seal installed before reinstalling the rotor. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Both

Tech A says that steering and suspension problems may be misdiagnosed as brake issues. Tech B says that professional technicians can be personally held liable for the quality of their brake service and repairs. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Tech B only

Tech A says that technicians are not held legally responsible for improper brake repairs. Tech B says that it is important to develop work routines that eliminate the potential for errors. Who is correct? A. Tech A B. Tech B C. Both D. Neither

Both

Tech A says that the pivot point of a brake pedal lever can be referred to as the fulcrum. Tech B says that leverage is a form of mechanical advantage. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

To equalize braking forces at each wheel and prevent brake pull.

What was the primary reason for the development of hydraulic braking? A. to equalize braking forces at each wheel and prevent brake pull B. to make brake pads and shoes last longer C. to dissipate heat better preventing brake fade D. to increase the amount of force required at the brake pedal

Wheel Brake

The master cylinder uses hydraulic pressure to operate which units? A. Wheel Brake B. Steering Wheel C. Front Wheels D. Input Piston

The brakes will not bleed properly

What will likely happen if brake calipers are installed on the wrong side of the vehicle? A. The ABS will activate at inappropriate times B. The brakes will grind constantly C. The brakes will not bleed properly. D. The caliper slide pins will bend

Increased traction

Weight transfer causes: A. Spongy Pedal B. Low brake fluid level C. Increased traction D. Hydraulic fade

Top Hat

What are parking brakes that use brake shoes inside of the rotor often called? A. Mini Drum B. Lock-In barrel C. Top Hat D. Combo Shoes

Minimum thickness, lateral runout, and thickness variation

What are the 3 main rotor measurements? A. Lateral runout, end play, and thickness variation B. Thickness variation, minimum thickness, and maximum diameter C. Force variation, maximum diameter, and lateral runout D. Minimum thickness, lateral runout, and thickness variation

Spongy and low pedal

What are the symptoms of hydraulic fade? A. dragging rear brakes B. grabbing front brakes C. spongy and low pedal D. steering wheel vibration

Hand lever and foot pedal

What are the two most common types of parking brake apply mechanisms? A. hydraulic and pneumatic B. hand lever and foot pedal C. kinetic and potential D. heat fade and water fade

ABS operation

What can cause brake vibration and pulsations that are considered normal? A. ABS operation B. Rotor parallelism C. Rotor surface finish D. Strut rod bushing play

Noisy (squealing) brakes

What concern is often the first indication that brake pads are worn below specification? A. Grabbing brakes B. Pulling brakes C. Dragging brakes D. Noisy (squealing) brakes

Trapped pressure that applies the brakes when the pedal is released

What does a master cylinder pushrod that is adjusted too long likely cause? A. Low brake pedal during brake application B. A spongy brake pedal feel C. Trapped pressure that applies the brakes when the pedal is released D. Stripped brake line fittings

Delay the first application of the front brakes

What does the metering valve do? A. Delay the first application of the front brakes B. Monitor pressure differences between both brake circuits C. Limits the pressure to the rear brake units D. Centers the pressure differential valve

Rotational Force

What force causes the rear of a vehicle to lift during braking? A. clamping force B. spring force C. rotational force D. centrifugal force

The transfer of lining material to the rotor evenly

What is burnishing? A. Centering the wheel on the hub with tapered lug nuts B. Torqueing the lug nuts so the rotors do not warp. C. The transfer of lining material to the rotor evenly D. Performing 4 ABS stops to heat the rotors rapidly.

Weight distribution of the vehicle

What is the major factor(s) that determine(s) how a brake system is divided front to rear? A. Weight of the vehicle with passengers B. Year of the vehicle C. Height of the vehicle D. Weight distribution of the vehicle

The brake shoes have worn grooves in the backing plate

What is the most likely condition that would cause brake shoes to click? A. The brake shoes are worn to metal on metal B. There is excessive dust in the brake drum C. The brake shoes have worn grooves in the backing plate D. The brake shoes are nearing minimum thickness

Rotate the piston using a special tool that engages the slots or holes on the face

What is the proper procedure to retract the pistons on most integrated parking brake calipers? A. Compress the piston with a C-clamp being careful not to damage the piston B. Rotate the piston using a special tool that engages the slots or holes on the face. C. Release parking brake cable tension and push the piston in by hand. D. Cycle the ignition 3 times with the parking brake applied

To carry brake fluid from the master cylinder to the brake units

What is the purpose of brake lines and hoses? A. to carry brake fluid from the master cylinder to the brake units B. to carry brake fluid from the power brake booster to the master cylinder C. to modify the brake fluid pressure to the brake units D. to protect the brake units from corrosion

To notify the driver the brake system needs attention

What is the purpose of the brake warning light? A. To notify the driver of high brake fluid level B. To notify the driver the brake system needs attention C. To notify others the vehicle is braking D. To notify the driver the vehicle is braking

To push the brake shoes into contact with the drums

What is the purpose of the wheel cylinder? A. To support the brake shoes and hardware B. To self-adjust the brakes to compensate for wear C. To form the braking surface for the brake linings D. To push the brake shoes into contact with the drums

A lug nut and washers

What is used to draw in the wheel stud using the drawing-in method? A. A wheel stud puller B. Vise grip pliers C. A brass hammer D. A lug nut and washers

The lathe will feed in the wrong direction cutting a deep groove in the rotor surface

What may happen if the wrong lever is moved during rotor machining? A. Excessive lateral runout will warp the rotor and bend the lathe arbor shaft B. The lathe will rotate backwards causing the rotor to be machined backwards. C. The lathe will flash a warning light and a buzzer will sound. D. The lathe will feed in the wrong direction cutting a deep groove in the rotor surface

Too shallow of a cut will overheat the tip of the cutting bit

When refinishing rotors on the vehicle why should the cutting depth not be less than 0.004"? A. too shallow of a cut will overheat the tip of the cutting bit B. A shallow cut will leave a directional finish C. Cutting less than 0.004" will cause the rotors to chatter. D. It will cause hot spots in the rotors

0.3 Volts DC

When testing brake fluid, any voltage reading less than __ is commonly acceptable. A. 0.3 Volts AC B. 3.0 Volts AC C. 0.3 Volts DC D. 3.0 Volts DC

1968

When were manufacturers required to integrate self-adjusting devices into their drum brakes? A. 1968 B. 1977 C. 1986 D. 2000

Pressure bleeding

Which method of brake fluid bleeding is ideal for when the fluid needs to be flushed out of a brake system? A. Manual bleeding B. Vacuum bleeding C. Pressure bleeding D. Free Play bleeding

Dot 5

Which of the brake fluid types are silicone based? A. Dot 3 B. Dot 5 C. Dot 5.1 D. Dot 4

They are easier to adapt a parking brake to

Which of the following is true about drum brakes? A. They are generally expensive to manufacture B. They are more resistant to overheating C. They are easier to adapt a parking brake to D. They don't require removal of the drum to inspect linings

Stop lamp wiring diagram

Which service information document shows the path of electrical current flow and components involved in the stop light system? A. Part and labor guide B. Removal and installation of the tail light assembly C. stop lamp wiring diagram D. stop lamp connector pin chart

Twin leading shoe

Which type of a drum brake design is very efficient at braking in forward, but the least effective in reverse? A. Duo-servo B. Leading/Trailing shoe C. Double-Anchor D. Twin Leading Shoe

Both

While discussing hydraulic system diagnosis. Tech A says that technical service bulletins(TSBs) should typically be researched before symptom diagnosis testing. Tech B says that once a fault is found, there may be an underlying root cause that requires further investigation. Who is correct? A. Tech A only B. Tech B only C. Both D. Neither

Heat transfer allows air to remove heat from the brakes to prevent heat fade

Why is heat transfer important to braking systems? A. heat transfer to the brake fluid must be increased to keep it from boiling. B. heat transfer must be increased to allow the brake linings to heat up properly C. Heat transfer traps heat in the rotor to enhance braking performance D. Heat transfer allows air to remove heat from the brakes to prevent heat fade.

To prevent brake fluid drainage

Why should the brake pedal be held in the depressed position when replacing brake lines or hoses? A. to prevent brake fluid drainage B. to prevent master cylinder return spring damage C. To keep the brake lights from discharging the battery D. to pressurize the new lines as soon as they are installed.