Brakes Midterm

Front 1

Service manuals come in two types-factory and ____-market.

Back 1

after

Front 2

Tech A says the vehicle owners manual includes tune up instructions and water pump removal instructions. Tech B says the vehicle owners manual includes tire specifications and jacking and towing information.

Back 2

Tech B

Front 3

who is responsible to ensure that you work safely?

Back 3

Yourself

Front 4

Tech A says a good shop safety inspection will check the shop for damaged or missing safety signage. Tech B says it should include checking for tripping hazards and missing fire extinguishers?

Back 4

Both

Front 5

Technician A says gasoline and kerosene are typical cleaning agents used to clean hands of grease and other automotive chemicals. Technician B says your hands are very porous and easily absorb chemicals on contact. Who is correct?

Back 5

Tech B

Front 6

Technician A says heavy-duty and impenetrable chemical gloves should always be worn when using solvents and cleaners. Technician B says heavy-duty and impenetrable chemical gloves should be worn when working on batteries. Who is correct?

Back 6

both

Front 7

Technician A says you should bring a two-post hoist up just far enough to come in contact with the vehicle so you can check the placement of the lifting pads. Technician B says after checking the placement of the lifting pads, you should raise the vehicle slightly, then push down gently on the vehicle's front and back to check the stability of the vehicle on the hoist. Who is correct?

Back 7

both

Front 8

____________________ are adjustable supports used with vehicle jacks and are designed to support the weight of the vehicle after the vehicle has been raised by a vehicle jack.

Back 8

Jack stands

Front 9

The color of high voltage wiring on a hybrid vehicle is typically:

Back 9

orange

Front 10

Technician A says that the main high-voltage battery pack must be disconnected before service is performed on or around the high-voltage components. Technician B says that most vehicles use a service plug or battery module switch to disconnect the high-voltage battery. Who is correct?

Back 10

both

Front 11

Technician A says that a brake-by-wire system can start to apply brakes before the driver can step on the brake pedal. Technician B says that brake-by-wire systems use heavy cables to transmit the brake pedal force to the wheel brake units. Who is correct?

Back 11

Tech A

Front 12

Technician A says that water-soaked brake shoes will cause brake fade. Technician B says that disc brakes dissipate heat faster than drum brakes. Who is correct?

Back 12

both

Front 13

Technician A says that kinetic energy is created during braking to stop the vehicle. Technician B says that kinetic energy is converted to heat energy during braking. Who is correct?

Back 13

Tech B

Front 14

Technician A says that the heavier the vehicle, the more stopping power is needed. Technician B says that the faster a vehicle is moving, the more braking power is needed. Who is correct?

Back 14

both

Front 15

Technician A says that regenerative braking converts brake heat into electricity. Technician B says that regenerative braking converts electrical energy into braking energy. Who is correct?

Back 15

neither

Front 16

Technician A says that an ABS allows the front wheels to be steered during a panic stop. Technician B says that ABS sensor inputs control wheel speed during brake events. Who is correct?

Back 16

Tech A

Front 17

Technician A says that light-duty service brakes are applied hydraulically. Technician B says that light-duty parking brakes are applied hydraulically. Who is correct?

Back 17

Tech A

Front 18

Tech A says that friction brakes can fade due to overheating of the brake lining. Technician B says that friction brakes can fade due to overheating of the brake fluid. Who is correct?

Back 18

both

Front 19

Technician A says that tire pressure does not affect braking. Technician B says that heavy vehicle loads increase stopping distance. Who is correct

Back 19

Tech B

Front 20

Technician A says that the brake pedal uses leverage to multiply foot pressure. Technician B says that when braking hard while moving forward, the vehicle’s weight transfers to the rear wheels, increasing their traction. Who is correct?

Back 20

Tech A

Front 21

Brake pedals typically use which type of lever?

Back 21

Second Order

Front 22

All of the following are methods to control brake dust when servicing braking systems, EXCEPT a(n):

aqueous brake wash station.

HEPA brake dust vacuum system.

aerosol can of brake cleaning solution, in some states.

air nozzle.

Back 22

Air Nozzle

Front 23

Two technicians are discussing Newton's first law of motion. Technician A says that a lightweight vehicle requires as much energy to accelerate as a heavier vehicle. Technician B says that a lighter vehicle requires less energy to accelerate than a heavier vehicle. Who is correct?

Back 23

Tech B

Front 24

Technician A says that force is transmitted hydraulically through the brake fluid. Technician B says that by using cylinders of different sizes, forces can be increased or reduced, allowing designers to obtain the desired braking force for each wheel. Who is correct?

Back 24

both

Front 25

All of the following are types of braking systems, EXCEPT:

drum and disk brakes.

air brakes.

electric brakes.

drag brakes.

Back 25

Drag Brakes

Front 26

All of the following are types of brake system used in trucks, EXCEPT: exhaust brake. friction brake. jake brake. down brake.

Back 26

down brake

Front 27

A ________________ transfers hydraulic fluid through lines and hoses to the wheel brake units.

Back 27

master cylinder

Front 28

All of the following frictional brake systems are used on vehicles today, EXCEPT: drum brakes. disc brakes. air brakes. motion brakes.

Back 28

motion brakes

Front 29

Technician A states that brake-by-wire means there is no mechanical or hydraulic connection between the brake pedal and the wheel brake units. Technician B states that brake-by wire systems use the brake pedal position and pedal application speed as indicators of what the driver wants to do. Who is correct?

Back 29

both

Front 30

Transmission-mounted brakes use a small drum brake to prevent the _________________ from turning.

Back 30

drive shaft

Front 31

Tech A says that the vacuum booster uses vacuum and atmospheric pressure to multiply the driver’s foot pressure applied to the master cylinder push rod. Tech B says that the vacuum booster increases the vacuum in the brake system. Who is correct?

Back 31

Tech A

Front 32

Tech A says that the secondary piston in a master cylinder is operated by hydraulic force. Tech B says that the tandem master cylinder has only one piston, but two seals. Who is correct?

Back 32

Tech A

Front 33

Tech A says that the metering valve controls pressure to the rear brakes. Tech B says that the proportioning valve controls pressure to the front brakes. Who is correct?

Back 33

neither

Front 34

Tech A says that DOT 5 brake fluid should be used in all vehicles today because it is silicone based and will not absorb water. Tech B says that mixing DOT 4 and DOT 3 is not recommended because of different boiling points, but both are hygroscopic. Who is correct?

Back 34

Tech B

Front 35

Tech A says that bench bleeding is used to remove brake fluid from a master cylinder before discarding it. Tech B says that bench bleeding the master cylinder isn’t necessary since it is faster to do it once the master cylinder is installed on the vehicle. Who is correct?

Back 35

neither

Front 36

Tech A says that a faulty vacuum booster can affect engine operation. Tech B says that it is acceptable to replace a steel brake line with a copper line, since it is easier to bend into shape. Who is correct?

Back 36

Tech A

Front 37

Tech A says that a brake pedal that does not return all the way will cause the brake warning light on the instrument panel to stay on. Tech B says that a brake pedal that does not return will cause the brake lights to stay on. Who is correct?

Back 37

Tech B

Front 38

Tech A says that the low level brake fluid switch on a master cylinder will turn on the brake warning light when the system is low on fluid. Tech B says that the low level brake fluid switch also monitors the condition of the fluid and will activate the warning light when the brake fluid needs to be replaced. Who is correct?

Back 38

Tech A

Front 39

Tech A says that hydraulic pressure is applied equally in all directions throughout a closed system. Tech B says that air in the hydraulic system will cause the brake pedal to be spongy. Who is correct?

Back 39

both

Front 40

Tech A says that brake fluid should periodically be checked for excessive moisture content. Tech B says that brake fluid should be replaced every 12,000 miles. Who is correct?

Back 40

Tech A

Front 41

___________________ carry brake fluid from the master cylinder to the brake units.

Back 41

Double-walled steel lines and flexible hoses

Front 42

All of the following are properties of DOT 3 and DOT 4 brake fluid, EXCEPT: high boiling point. low freezing point. hygroscopic. it is not harmful to painted surfaces.

Back 42

it is not harmful to painted surfaces.

Front 43

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

Back 43

compensating

Front 44

Technician A says that a center high-mount stop lamp (CHMSL) is used to apply the brakes if there is a brake failure. Technician B says that as of 1986, all vehicles must have a center high-mount stop lamp (CHMSL) to reduce incidence of rear-end collisions. Who is correct?

Back 44

Tech B

Front 45

The primary brake circuit fails due to a leak in the lines. Technician A says that the driver will notice a lower than normal brake pedal and reduced braking power. Technician B says that the brake pedal will "grab" higher than normal. Who is correct?

Back 45

Tech A

Front 46

Technician A says that the pressure differential switch may need to be re-centered after bleeding the brakes. Technician B says that there are several types of pressure differential switches, and each requires a different method of re-centering. Who is correct?

Back 46

both

Front 47

Most modern master cylinder reservoirs are equipped with a low brake fluid float switch that turns on the __________________ on the instrument panel and/or sets a notification on the driver information system.

Back 47

red brake warning light

Front 48

With a ______________________ in the brake system, any fluid leak could mean the whole braking system fails.

Back 48

single-piston master cylinder

Front 49

Which of the following is not a main component of a typical hydraulic brake system?

Brake pedal

brake fluid

Master cylinder

Clutch cylinder

Back 49

Clutch cylinder

Front 50

All of the following can turn on the red brake warning light, EXCEPT: the parking brake being engaged. the brake fluid level being low. the pressure being unequal in the brake system. a defective stop lamp switch.

Back 50

a defective stop lamp switch

Front 51

All of the following are typical brake system warning light switch locations, EXCEPT: parking brake assembly. pressure differential assembly. master cylinder reservoir. brake hose at front calipers.

Back 51

brake hose at front calipers

Front 52

Technician A says that as moisture levels increase in brake fluid, the boiling point of the brake fluid decreases. Technician B says that the result of brake fluid boiling in brake systems is a spongy pedal and a loss of braking effort at the wheels. Who is correct?

Back 52

both

Front 53

Power brake systems should be inspected and tested whenever a customer complains of any of the following, EXCEPT: dragging brakes. brake pedal is harder to push than normal. brake pedal height has changed. parking brakes don’t hold.

Back 53

parking brake dont hold

Front 54

A typical brake pedal inspection includes all of the following, EXCEPT:You Answered brake pedal height. brake pedal free play. brake pedal travel. brake pedal switch operation.

Back 54

brake pedal switch operation

Front 55

Air in the lines will cause what type of problem?

Back 55

spongy brake pedal

Front 56

The proper operation of a vacuum brake booster requires that the engine be capable of supplying at least:

Back 56

16 in. Hg Vacuum

Front 57

When diagnosing a stop light system for the stop lights illuminating all the time (brake pedal not depressed), which of the following is LEAST likely to be the cause? Misadjusted brake pedal Defective brake switch Short to power Short to ground

Back 57

short to ground

Front 58

When performing a DVOM-galvanic test on brake fluid, what is a good specification to use to recommend a brake fluid flush?

Back 58

more than 0.3 volts

Front 59

Technician A says that if none of the brake lights illuminate when depressing the brake pedal, the problem could be the fuse or brake switch. Technician B says that if none of the brake lights illuminate when depressing the brake pedal, the problem could be the feed wire or ground. Who is correct?

Back 59

both

Front 60

A(n) ____________________ (non-CAN-bus) circuit is a simple light bulb in series with as many as four switches that are connected in parallel with one another.

Back 60

mechanical brake warning lamp

Front 61

Tech A says that it is almost impossible to install self-adjusters on the wrong side of the vehicle. Tech B says that grease seals can be reused. Who is correct?

Back 61

Neither

Front 62

Tech A says that when performing a brake job on the rear axle of an older vehicle, inspection finds brake fluid under the dust boot; this suggests wheel cylinder replacement on both rear wheels. Tech B says that when a drum brake return spring has failed, springs on both rear wheels need to be replaced. Who is correct?

Back 62

both

Front 63

Tech A says that parking brakes on drum brake vehicles use separate brake shoes from the standard drum brake shoes. Tech B says that parking brakes on drum brake vehicles mechanically operate the standard drum brake shoes. Who is correct?

Back 63

tech b

Front 64

Tech A says that riveted lining is usually for heavy duty or high performance vehicles. Tech B says that you need to identify each shoe individually to help ensure proper installation. Who is correct?

Back 64

both

Front 65

Tech A says that most brake drums are designed to be machined if minor surface issues are present. Tech B says that brake drums can be reused if they are machined over specifications, as long as the surface is smooth. Who is correct?

Back 65

Tech A

Front 66

Tech A says that a grinding noise in drum brakes generally requires replacing the brake shoes and resurfacing or replacing the drums. Tech B says that a click noise in drum brakes requires replacing the brake shoes and resurfacing or replacing the drums. Who is correct?

Back 66

Tech A

Front 67

Tech A says that brake shoe linings saturated with brake fluid from a leaky wheel cylinder can be cleaned with brake cleaner and reused as long as they aren’t worn out. Tech B says that brake shoes should be replaced in axle sets. Who is correct?

Back 67

Tech B

Front 68

Tech A says that duo-servo brake shoes are only anchored on the top. Tech B says that duo-servo brake shoe systems typically adjust automatically during normal brake applications in a forward direction. Who is correct

Back 68

Tech A

Front 69

Tech A says that when inspecting brake shoes, if the shoes are unequally worn, this could be caused by a stuck wheel cylinder piston. Tech B says that on a duo-servo brake system, the lining on the primary shoe is typically shorter in length and is installed toward the front of the vehicle. Who is correct?

Back 69

both

Front 70

Tech A says to use an air hose to clean the backing plate of dust and contamination. Tech B says to use a brake cleaning solution to clean the backing plate of dust and contamination. Who is correct?

Back 70

Tech B

Front 71

Drum brake return springs can be an integrated coil spring or ______________________ spring.

Back 71

Y-shaped

Front 72

Many manufacturers allow the maximum brake drum diameter to be ___________________________ over standard size.

Back 72

0.060"

Front 73

___________________ are installed so the direction they are applied is the same as the forward rotation of the drum.

Back 73

Leading Shoes

Front 74

Technician A says that it is normal to find a little brake fluid behind the dust boot when you pull the dust boot from the wheel cylinder during a brake inspection. Technician B says that if there is any brake fluid behind the dust boot, the wheel cylinder is starting to leak and should be replaced. Who is correct?

Back 74

Tech B

Front 75

All of the following are typical parts found in a dual-acting wheel cylinder, EXCEPT:You Answered piston seals. pistons. rubber boots. retracting springs.

Back 75

retracting springs

Front 76

Technician A says during the manufacturing of a wheel cylinder, the cylinder bore or inside diameter is created by drawing a properly sized ball bearing through the bore, which gives the surface a hard, smooth finish. Technician B states that most manufactures recommend replacing rather than honing the wheel cylinder if it has pits or corrosion. Who is correct?

Back 76

both

Front 77

Technician A says that twin leading shoe brake systems are more efficient in forward braking than reverse braking. Technician B says that leading/trailing shoe brake systems provide equal, but not maximum, braking in both directions. Who is correct?

Back 77

both

Front 78

________________ are not typical components of a wheel cylinder.

Back 78

return springs

Front 79

All of the following components are part of a parking brake system in a drum brake, EXCEPT: wheel cylinder. primary shoe. secondary shoe. brake strut rod.

Back 79

Wheel cylinder

Front 80

The ___________________ is the LEAST common type of drum brake system in modern automotive use.

Back 80

Twin leading shoe drum brake system

Front 81

When reinstalling a wheel cylinder on the backing plate, the brake line should be started by hand three or four turns to prevent _____________________ of the wheel cylinder

Back 81

cross threading

Front 82

Technician A states that when replacing rear brake shoes, it is a good practice to disassemble only one side at a time, leaving the other side as a reference for when you reassemble the first side. Technician B states that it is good practice to use a digital camera to take a couple of reference pictures before disassembly. Who is correct?

Back 82

both

Front 83

Technician A says that if drum brake shoes become saturated with gear oil or grease, they should be replaced. Technician B says that drum brake shoes can be cleaned and reused if the lining becomes contaminated with gear oil or grease. Who is correct?

Back 83

Tech A

Front 84

Technician A says that it is a good practice to research any technical service bulletins for any brake system complaint. Technician B says that it is common practice to test-drive a vehicle even if the brake pedal goes to the floor. Who is correct?

Back 84

Tech A

Front 85

Technician A says that brake spring pliers are used to remove and install hold-down springs. Technician B says that brake spring pliers are used to remove the parking brake cable from the backing plate. Who is correct?

Back 85

neither

Front 86

Technician A says that many wheels use a tapered hole that matches the tapered end of the lug nut and centers the wheel on the wheel flange. Technician B says that manufacturers usually suggest tightening wheel lugs in a circular pattern. Who is correct?

Back 86

Tech A

Front 87

Technician A states that when measuring the drum diameter, the measurement should be taken at the deepest groove or worn part of the drum. Technician B states that if it is over the size limit, the drum must be replaced. Who is correct?

Back 87

both

Front 88

A _______________ wrench should be used to tighten each lug nut to manufacturer specification and in proper sequence.

Back 88

torque

Front 89

Technician A states that pre-adjusting the brake shoes and parking brake is a routine step in a drum brake job. Technician B states to start the pre-adjustment sequence by making sure the parking brake is fully applied. Who is correct?

Back 89

Tech A

Front 90

When removing a hubless brake drum, it may be necessary to use a(n) _______________ hammer to hammer on the drum between the lug studs.

Back 90

ball peen