7290-158 Lesson 4

In relation to brakes what MUST system be?

• Hardy and reliable

• Simple and efficient

• Mechanical and hydralic

• durable and reliable

What converts driver effort into hydraulic force?

• tandem wheel cylnders

• floating type calipers

• regenerative brakes

• master cylinder

What happens to brake fluid when it absorbs moisture?

• It turns black

• The boiling point decreases

• The boiling point increases

• It gets air bubbles in it

What is typical boiling point for new brake fluid?

• 100° F

• 100° C

• 260° C

• 260° F

What is freezing point of new brake fluid?

• -40° C

• 0° C

• -32° F

• +32° F

How does a Brake servo operate?

• Vacuum on one side of a diaphragm

• Pressure from a pump

• Electronic solendoid

• Electromagnetically

How many phases of operation does the ABS operate?

• One

• Two

• Three

• Four

When inlt valve is closed and outlet valve is closed on ABS, which phase is in operation?

• Reduction

• Increase

• Holding

• Release

When Inlet valve is closed, and outlet valve open, which ABS phase is in operation?

• Increase

• Reduction

• Holding

• lock out

During ABS increase phase (control) Where does the high pressure pump draw fluid from?

• brake circuit

• New bottle DOT4

• Accumulator

• Calipers