WorksheetsBrakes
Total questions: 100
Worksheet time: 53mins
Tech A uses compressed air to remove brake dust from brake components. Tech B uses a wet type brake cleaner to remove brake dust from brake components. Who is correct?
Tech A
Tech B
Both
Neither
Since 1967 federal law has required that all cars be equipped with _________________.
disc brakes
power assist brake
dual hydraulic systems
all of the above
To bleed the pressure off the accumulator on an ABS brake system the technician should _________________.
pump the brake pedal at least 40 times with the ignition switch off
start the engine
turn the ignition switch on
none of the above
Tech A says that breathing asbestos fibers contained in friction material can cause lung disease. Tech B says that the clutch of a manual transmission vehicle could contain asbestos. Who is correct?
Tech A
Tech B
Both
Neither
Tech A says that OSHA is the federal agency in charge of workers safety. Tech B says you should always test the brakes on a car before starting the engine to be sure they work. Who is correct?
Tech A
Tech B
Both
Neither
Which is not a component of the red brake warning light system?
Brake fluid level indicator
Pressure differential switch
Stop light switch
Parking brake switch
Brake Calipers with Integrated Parking Brake systems retract the pistons by......
Using a C-Clamp
Using a special tool in the outer slots of the piston
Screwdriver
Pry bar
Technician A says that DOT 5 brake fluid may be substituted for DOT 3. Technician B says that brake fluid that has been stored in an open container may be used to top off the master cylinder. Who is right?
A only
B only
Both A and B
Neither A or B
What is the reading on the 0-1.0" micrometer shown?
.550
.505
.525
.530
When fabricating brake lines with double-lap or ISO type flares, which of these should be used?
Carbon DOM tubing
Double rolled steel tubing
High pressure nylon tubing
Zinc plated tubing
One of the vehicle's brake calipers remains applied after the brake pedal is released. The caliper releases when the technician loosens the bleeder screw on the caliper. All other calipers operate normally. Which of these could be the cause?
A binding caliper piston
A collapsed brake hose
A failed master cylinder cup seal
A leaking brake fluid reservoir
While performing an inspection on a sliding caliper disk brake, the technician finds that the outer pad is worn more than the inner pad. This could be caused by:
Excessive rotor lateral runout
High speed driving
Seized caliper slides
A leaking flexible brake hose
The tool shown in the illustration is being used to measure brake:
Drum runout
shoe thickness
shoe pre-adjustment
drum parallelism
When a vehicle manufacturer finds a wide-spread repair issue caused by a common occurrence, they may issue:
An SDS
A TPS
A MAP
A TSB
The purpose of the brake burnish (break-in) procedure is to:
Condition the friction and rotor surfaces
Eliminate any possibility of accumulating brake dust
Eliminate rotor lateral runout
Ensure the brake pads and clips were installed correctly
The brake pedal slowly goes to the floor while sitting at a stoplight. The technician finds that the brake fluid level in the master cylinder is full and there are no visible signs of a leak. This could be caused by:
Ruptured vacuum booster diaphragm
Leaking wheel cylinder
Damaged caliper square O-ring.
An internally failed master cylinder
Technician A says that brake fluid contamination can be a result of a loose or ineffective master cylinder cap/seal. Technician B says that brake fluid can be tested for moisture using test strips. Who is right?
A only
B only
Both A and B
Neither A or B
On a vehicle equipped with a vacuum-type brake booster, a hissing noise is heard from under the dash when the brake pedal is applied. This could be caused by a:
Plugged vacuum booster check valve
Leaking vacuum booster supply hose
Plugged vacuum booster atmospheric valve
Leaking vacuum booster diaphragm
A vehicle pulls to the right during normal braking.
Technician A says that a failed power brake booster could be the cause. Technician B says that brake pads contaminated with brake fluid could be the cause. Who is right?
A only
B only
Both A and B
Neither A or B
On a vehicle with a diagonally split hydraulic brake system, the vehicle pulls to the left when the brakes are applied. Which of these could be the cause?
A ruptured left front flexible brake hose
A restricted right front flexible brake hose
A stuck-closed metering valve
A broken right rear parking brake cable
A vehicle's rear brake drum measures 10.109" (256.76mm). The drum diameter specifications are shown in the table. Technician A says that the brake drum can be refinished and reinstalled on the vehicle. Technician B says that the refinished cut cannot exceed 0.019".
A only
B only
Both A and B
Neither A or B
Which of these properly identifies the type of flares in the illustration shown?
X = double flare, Y = metric bubble flare (ISO)
X = single flare, Y = double flare
X = metric bubble flare (ISO), Y = double flare
X = single flare, Y = metric double flare
The following question contains the word EXCEPT. Read the question carefully and look for the choice that could NOT cause the described situation. On a vehicle with a vacuum-type power brake booster, the brake pedal is still firm, but the stopping distance is increased. Any of these could be the cause EXCEPT.
A ruptured vacuum booster diaphragm
A leaking master cylinder reservoir
A leaking vacuum booster supply hose
Seized wheel cylinder
A vehicle equipped with a vacuum type power brake booster has a hissing sound from under the dash when the brake pedal is applied or released with the engine running. Technician A says that the brake booster needs to be replaced. Technician B says that the master cylinder pushrod needs to be adjusted. Who is right?
A only
B only
Both A and B
Neither A or B
Where would one most likely find the master cylinder on a vehicle?
in front of the brake pedal under the hood
beside the brake pedal in the passenger compartment
under the vehicle beneath the driver's seat
under the hood near the radiator
What is this part?
Brake shoes
Brake pads
Brake rotor
Brake stop
WHAT TYPE OF BRAKE SYSTEM IS FOUND ON THE FRONT OF ALL MODERN CARS-1980 & UP ?
DRUM
ELECTRIC
DISK
ROTARY
WHAT TYPE OF BRAKES MIGHT BE FOUND ON THE REAR & ON OLDER CARS?
DRUM
ELECTRIC
ROTARY
DISK
HYDRAULICS IS.......?
AIR POWER
FLUID POWER
ELECTRIC POWER
USE OF COMPUTERS
FRONT BRAKES DO APPROXIMATELY _____PERCENT OF THE BRAKING?
90
75
45
15
One advantage of disk brakes?
COOLING
SIZE
COST
LIQUIDS ARE........
COMPRESSIBLE
NON-COMPRESSIBLE
What component adjusts the pressure from front to rear on the brake system?
PRESSURE DIFFERENTIAL SWITCH
PROPORTIONING VALVE
MASTER CYLINDER
CALIPER
The terms floating, sliding, and fixed refer to ______________.
drum type brakes
master cylinder types
disc brake calipers
all of the above
Synthetic, semi metallic, metallic, and asbestos are all types of _________________.
brake drums
brake rotors
friction materials
all of the above
Bonded friction material is attached to the brake shoes by ________________.
rivets
bolts and nuts
adhesives
all of the above
Solid vented and composite are all types of __________________.
brake pads
brake shoes
brake rotors
none of the above
As the brake lining wears the amount of brake fluid in the caliper bore ____________________.
decreases
increases
remains the same
none of the above
Most of the heat generated in the disc brake system is absorbed and dissipated by the __________________.
rotor
wheel cylinder
caliper
brake fluid
________ rotors are used on large cars and light trucks
Solid
Duo-hub
Small
Vented
A non parking brake type disc brake caliper provides ________________.
dual servo action
self adjustment
greater braking ability than a drum brake
none of the above
This type of caliper will only have pistons on the inboard side
Fixed
Floating
Turbo
Vernier
Brake fluid is Hygroscopic, which means it attracts what?
Oil
Copper
Horse Pressures
Moisture
Brake fluid can cause damage when it comes in contact with painted surfaces.
True
False
Integral disc parking brake systems contain the parking brake mechanism within the __________________.
drum brake
front brakes
rear brake calipers
rear axle housing
What part is this?
Caliper mounting bolt
Caliper slide pin
Bleeder screw
Banjo bolt
What part is this?
adjuster screw
caliper mounting bolt
caliper slide pin bolt
Turbo
What does the acronym ABS stand for?
All Brakes Stopping
Automatic Braking System
Anti-lock Braking System
Advanced Braking System
All of the following are types of brake fluid except:
DOT 2.
DOT 3.
DOT 4.
DOT 5.
Which type of fluid do most clutch master cylinders use?
brake fluid
hydraulic fluid
transmission fluid
washer fluid
When one is diagnosing a vehicle with vibrating brake pads, which parts are most likely missing?
anti-rattle clips
anti-fatigue clips
anti-wear clips
anti-float clips
It is the technician's responsibility to make sure the brake fluid used meets or exceeds manufacturer's requirements.
True
False
What is the most common brake fluid used in most cars?
DOT 3
DOT 4
DOT 5
DOT 5.1
As brake fluid ages it absorbs moisture which ________________________.
raises the boiling point
lowers the boiling point
increases corrosion
both lowers boiling point & increases corrosion
Glycol based brake fluids are very ______________.
hydroscopic
hydrophobic
Brake fluid must maintain the correct viscosity (so it is free flowing all temps).
True
False
Brake fluid must be able to maintain a low boiling point.
True
False
What happens if brake fluid was to boil?
It turns to a solid and brakes are lost
It remains a liquid and brake are lost
It turns to a gas and brakes are lost
Brake fluid cannot boil
Brake fluid must be able to maintain a low freezing temp.
True
False
A vehicle requiring DOT 3 can be combined with DOT 4; as long as it exceeds the requirements of DOT 3.
True
False
A vehicle requiring DOT 4 can be combined with DOT 3; as long as it exceeds the requirements of DOT 3.
True
False
Contaminated brake fluid can cause internal corrosion.
True
False
Opening the bleeder screws and letting brake fluid drip out is the ____________ method of brake flushing?
gravity
vacuum
manual
pressurize
The proper tubing for automotive brake systems is double wall seamless steel tubing.
True
False
Brake lines and fittings can withstand __________________.
6000psi
7500psi
8000psi
9000psi
The most commonly used type of power assist units are vacuum operated.
True
False
Vacuum power brakes allow a car to stop faster in less distance.
True
False
Most vacuum powered brake boosters get their vacuum supply from the engine intake manifold.
True
False
The vacuum check valve will allow enough vacuum for up to ______ brake applications after the engine has stopped.
1
3
4
6
With the engine off, press and release the brake pedal 10 times. Then while holding firm pressure on the brake pedal start the engine. The brake pedal should _________________.
Hold steady
Not drop
Drop
Cycle itself up and down
A vehicle comes to the shop for a 30K service. The technician notices the brake fluid is considerably low with no leaks found. What is the most likely cause?
Evaporation
Corrosion
Thermal dispersion
Brake lining wear
