Exam 95: Hydraulic Valves and Switches

The button on the ________ valve should be held when pressure bleeding the brakes.

Technician A says that the height-sensing proportioning valve changes its split point by means of a rotating cam. Technician B says that levers are used in conjunction with the height-sensing proportioning valve. Which technician is correct?

Dual braking systems sometimes use a fluid level switch in place of a pressure differential switch.

Residual check valves ________.

When the brakes are applied lightly at low speeds on slippery pavement, which type of valve keeps the front brakes from locking?

Technician A says installation of aftermarket air shocks may cause height-sensitive proportioning valves to function improperly. Technician B says vehicles equipped with ABS systems using electronic brake proportioning (EBP) do not need proportioning valves. Which technician is correct?

A typical brake light switch is electrically ________.

Identify the valve shown (arrow).

Two technicians are discussing the metering valve in a front-disc, rear-drum braking system. Technician A says that the metering valve delays application of the front brakes. Technician B says that the metering valve delays the application of the rear brakes. Which technician is correct?

The ratio of front to rear hydraulic system pressure supplied to the rear brakes by the proportioning valve is called ________.

A residual check valve is used to ________.

Technician A says a pull to the right during braking could be caused by a defective metering valve.Technician B says a pull to the left could be caused by a defective proportioning valve. Which technician is correct?

One type of fluid level switch uses a magnet and reed switch.

The rear brakes lock up during a regular brake application. Technician A says the metering valve could be the cause. Technician B says that stuck front disc brake calipers could be the cause. Which technician is correct?

Technician A says that some proportioning valves are one part and used to control both rear brakes.Technician B says that some proportioning valves are two parts; one for each rear wheel. Which technician is correct?

Technician a says that the red brake warning light can be turned on if a difference in pressure is detected by the pressure differential switch. Technician B says that the red brake warning light can be turned on if the brake fluid level sensor detected low brake fluid level. Which technician is correct?

A visual inspection of the metering valve includes ________.

A combination valve could include ________.

When the brakes are applied in a panic situation, the rear brakes have a tendency to skid. The most likely cause is ________.

The rear wheels lock up during hard braking. Technician A says that a defective metering valve could be the cause. Technician B says that a defective proportioning valve could be the cause. Which technician is correct?