Exam 8: Hydraulic Fundamentals

Which of the following is least likely to cause slippage in a multi-disc clutch assembly?

Which of the following is used to move a shift valve to achieve an upshift in an automatic transmission?

Technician A states that when calculating the amount of force created by a piston, it is classified as a circle. Technician B states that to calculate the area of a circle, we need to use the formula (∏ × r). Who is correct?

Technician A says that the torque converter hub drives the front pump in an automatic transmission. Technician B says that the turbine shaft drives the front pump. Who is correct?

A manufacturer's clutch and band application chart is sometimes referred to as a _______ chart.

Technician A says that a multidisc clutch is often located inside of a drum or mounted inside the transmission case. Technician B says that a large piston with a lip seal that applies over 1800 pounds of force squeezes the clutches together. Who is correct?

Which of these valves is directly connected to the gearshift mechanism in the vehicle?

Technician A says that some manufacturers recommend transmission fluid and filter changes as frequently as every 25000 miles. Technician B says some vehicle manufacturers advise against changing the transmission fluid for the life of the vehicle because the transmission is sealed. Who is correct?

Which of the following gear reductions would you get having a smaller input gear with 8 teeth driving a larger output gear with 24 teeth?

Technician A says that fluid pressure in an automatic transmission is primarily controlled by engine rpm. Technician B says that modulator pressure changes with engine vacuum. Who is correct?

Which of the following is an additive found in typical transmission fluid?

Which of these valves is directly connected to the gearshift mechanism in the vehicle?

If there is a problem in obtaining park, it could be due to:

Which style of automatic transmission filter is used inside the transmission case?

The delay provided by a flow control orifice enables the engineers to control the amount of time it takes to apply a given device.

A __________ can be one of two different types: one-way or two-way.

Which of the following is NOT a type of transmission pump?

Technician A says that transmission filters can be located inside or outside of the transmission case. Technician B says that some heavy duty transmissions may use both an internal and external transmission fluid filter. Who is correct?

What are the larger diameter sections of a spool valve called?

Technician A says anti-foam additives help to prevent loss of lubrication due to aeration of the transmission fluid. Technician B says viscosity modifiers used in transmission fluid are different than viscosity modifiers used in engine oils. Who is correct?