Deck 96: Brake Fluid and Lines

Question 1

The type of brake fluid most often recommended by vehicle manufacturers is ________.

A)DOT 4
B)DOT 3
C)DOT 5
D)DOT 5.1

Answer 1

DOT 3

Question 2

Which of the following is NOT a characteristic of conventional brake fluid?

A)Lasts the life of the vehicle unless there is a leak
B)Removes paint if spilled on vehicle surfaces
C)Is clear or amber in color
D)Absorbs moisture from the air

Answer 2

Lasts the life of the vehicle unless there is a leak

Question 3

Technician A says that DOT 5 brake fluid can be added to DOT 3 brake fluid. Technician B says that it is wise to purchase brake fluid that is in metal rather than plastic containers. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Answer 3

Technician B only

Question 4

As brake fluid ages, what happens?

A)The color changes to purple
B)The viscosity (thickness) decreases
C)The boiling temperature decreases
D)The boiling temperature increases

Question 5

Technician A says that glycol-based brake fluid causes the seals to swell slightly. Technician B says the DOT 5 (silicone-based) brake fluid causes rubber seals to swell slightly. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 6

The two types of flares used on brake lines are ________.

A)SAE and DOT
B)Double flare and ISO
C)SAE and double flare
D)Ball flare and bubble flare

Question 7

Two technicians are discussing why the brake lines are coiled near the master cylinder on many vehicles. Technician A says that these coils help prevent moisture from flowing from the master cylinder to the calipers. Technician B says that they help prevent cracks that could be caused by vibrations. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 8

Flexible brake hose should be inspected for all of the following EXCEPT ________.

A)Cracks
B)Worn outer ribs
C)Twisted
D)Leakage

Question 9

Why should brake calipers be supported by a wire during brake service and NOT allowed to hang by the flexible brake hose?

A)To prevent bending the hose support bracket
B)To keep air from getting into the system
C)To help prevent damage to the brake hose
D)To hold the caliper higher than the master cylinder to prevent fluid loss

Question 10

Used brake fluid should be ________.

A)Mixed with and recycled with used oil
B)Disposed of properly according to state and local laws
C)Poured onto open ground to reduce dust
D)Poured down the drain

Question 11

Two technicians are discussing brake fluid. Technician A says that brake fluid standards are determined by the Society of Automotive Engineers (SAE). Technician B says that brake fluid standards are determined by the Department of Transportation (DOT). Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 12

Because brake fluid is hygroscopic, it ________.

A)Absorbs moisture
B)Must lubricate pistons and cups to reduce wear
C)Creates an odor if not flushed annually
D)All of the above

Question 13

Technician A says FMVSS 116 lists a brake fluid standard ONLY for temperature compatibility. Technician B says FMVSS 116 lists a brake fluid standard for viscosity AND boiling point. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 14

In general, a good brake fluid should ________.

A)Not boil easily
B)Be very thick
C)Freeze at very low temperatures
D)Hold moisture well

Question 15

The dry ERBP of brake fluid ________.

A)Reflects its performance when in service
B)Reflects its performance when new and uncontaminated
C)Is known only to the manufacturer
D)Reflects its temperature compatibility

Question 16

Polyglycol brake fluid is labeled ________.

A)DOT 3 or 4
B)DOT 5 or 6
C)DOT 6
D)DOT 5

Question 17

Brake fluid boiling point can be measured using ________.

A)A Styrofoam cup
B)An electronic tester
C)A hygrometer
D)A candy thermometer

Question 18

Modern brake tubing is ________.

A)Made of copper
B)Able to withstand an internal pressure of 2000 psi
C)Double-walled
D)Single-walled

Question 19

A bulge on a brake hose is ________.

A)Normal with silicone brake fluid
B)Normal
C)An indication of an internal leak
D)Normal only on hoses made before the mid-1960s

Question 20

SAE flare fittings used on hydraulic brake systems must ________.

A)Have a 45-degree taper on the male part of the fitting
B)Have no taper on the female part of the fitting
C)Have a 20-degree taper on the male and female parts of the fitting
D)Be single flared

Question 21

Most hydraulic brake systems use ________ rubber.

A)BUNA N
B)Neoprene
C)EPDM
D)SBR

Question 22

The rubber parts designed to be used with HSMO are not compatible with polyglycol fluid.

Question 23

An armored brake line can be replaced with a plain, double-walled brake line.

Question 24

A double lap flare and an ISO flare are interchangeable.

Question 25

The dry boiling point of DOT 3 is higher than the wet boiling point of DOT 4.

Question 26

Which of the following arrows indicates the wheel cylinder cup?

A)A
B)B
C)C
D)D

Question 27

What type of tubing flare is shown in this illustration?

A)ISO flare
B)BVD flare
C)SAE flare
D)ESI flare

Question 28

What type of tubing flare is shown in this illustration?

A)SAE flare
B)BVD flare
C)ISO flare
D)ESI flare