Exam 50: Brake Systems

Why must brake fluid be moisture free?

While discussing brake fluids, Technician A says hygroscopic brake fluid absorbs moisture from the air. Technician B says DOT 3 brake fluid has a higher boiling point than DOT 4 fluid. Who is correct?

Translucent plastic brake fluid reservoirs eliminate the need to remove the fluid caps during a complete brake system inspection.

Technician A says low-drag calipers retract the pistons and pads farther from the rotor than traditional calipers. Technician B says systems that use low-drag calipers cannot use quick take-up master cylinders. Who is correct?

____________________ is the distance between the brake pedal and the floor after the pedal has been depressed fully.

The ____________________ is a housing that contains the disc brake piston, seal, and boots.

The amount of pressure exerted by the brakes is being discussed. Technician A says short brake lines generate more pressure than long brake lines. Technician B says the condition of the piston seals in the master cylinder influences the amount of pressure developed. Who is correct?

Most manufacturers recommend changing the brake fluid periodically.

A brake fluid lamp will illuminate on the instrument panel if the fluid is contaminated and needs to be changed.

Since _____, all cars have been required to have two separate brake systems.

Brake hoses are typically rigid steel lines used to transmit brake fluid pressure.

____________________ bleeding is performed on a master cylinder before it is installed on the vehicle.

Which of the following could most likely lead to brake hose failure?

____________________ sensors are built into the brake fluid reservoir body or cap.

Synthetic linings are made of _____

Explain why bleeding air out of a hydraulic system is important.

The upward movement of the rear suspension opens the ______.

Explain why modern hydraulic braking systems are dual designs.

Technician A says power brakes are designed with vacuum-assisted units that use engine vacuum. Technician B says power brakes are designed with vacuum-assisted units that use vacuum developed by an external pump. Who is correct?

If the master cylinder has a large rear chamber and a smaller front chamber, _____.