Question 1

Technician A states that the pressure regulator valve keeps the pressure at a regulated level by exhausting excess pressure back to the transmission pan. Technician B states that with the manual valve in the park position, line pressure is not able to flow past the valve to any other components of the transmission. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

Technician A is correct because the pressure regulator valve does exhaust excess pressure back to the transmission pan to maintain a regulated level. Technician B is also correct because when the manual valve is in the park position, it prevents line pressure from flowing to other components of the transmission.

Question 2

Technician A states that the pump sends fluid out under pressure. This release of fluid creates line pressure. Technician B states that line pressure sent to the throttle valve is mostly exhausted to the transmission pan when the throttle is open and the vehicle is under load. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

Technician A is correct because the pump is responsible for creating line pressure by sending fluid out under pressure. Technician B's statement is incorrect as line pressure is not mostly exhausted to the transmission pan when the throttle is open and the vehicle is under load.

Question 3

Technician A states that with the automatic valve in the park position, line pressure is not able to flow past the valve to any other components of the transmission. Technician B states that the pump sends fluid out under pressure to only the pressure regulator valve. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

The answer of Technician A states that with the automatic...

Question 4

Technician A says that greater clearances between the between the spool valve and the valve body increase sealing. Technician B says that the front pump is turned by the torque converter hub. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

Technician B is correct because the front pump in an automatic transmission is driven by the torque converter hub. Technician A is incorrect because greater clearances between the spool valve and the valve body would decrease sealing, not increase it.

Question 5

Technician A says that spool valves tend to be self-cleaning. Technician B says that park is obtained by mechanically locking one band and one clutch together. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

Spool valves are designed to be self-cleaning as they move within their bores, which helps to prevent debris from accumulating. Technician B's statement is incorrect because park is typically achieved by mechanically locking the transmission output shaft, not by locking a band and a clutch together.

Question 6

Technician A says that when governor pressure on one side of a shift valve overcomes spring pressure and throttle pressure on the other side, an upshift occurs. Technician B says when reverse boost pressure on one side of the reverse valve overcomes governor pressure on the other side, shift into reverse occurs. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

The answer of Technician A says that when governor pressure...

Question 7

Which of the following are spool valves that direct the flow of hydraulic oil to a clutch or band?
A) Shift valves
B) Governor pressure valves
C) Throttle pressure valves
D) Pressure relief valves

Accepted Answer

Shift valves are spool valves that direct the flow of hydraulic oil to a clutch or band in an automatic transmission system.

Question 8

The automatic transmission's shift valve will ______ the passage of transmission oil at line pressure to apply a particular clutch or brake servo.
A) Block
B) Allow
C) Either A or B
D) Neither A nor B

Accepted Answer

The shift valve in an automatic transmission is designed to allow the passage of transmission oil at line pressure to apply a particular clutch or brake servo, enabling the transmission to shift gears.

Question 9

As governor pressure increases, it pushes on the shift valves towards their upshift position. What determines the sequence in which the shift valves move?
A) Line pressure
B) Spring tension
C) Throttle pressure
D) Governor pressure

Accepted Answer

The sequence in which the shift valves move is determined by the spring tension, which is designed to counteract the governor pressure and control the timing of the shifts.

Question 10

The shift valves are held to the downshift side of their bores by springs.

Accepted Answer

Shift valves in automatic transmissions are typically held in position by springs, which help control the movement of the valves for proper gear shifting, including downshifting.

Question 11

The spring used with the 2-3 shift valve will be stiffer than the spring used with the 3-4 shift valve in the same transmission.

Accepted Answer

The stiffness of the springs used with shift valves in a transmission depends on the specific design and requirements of the transmission system. There is no general rule that the spring for the 2-3 shift valve is stiffer than the one for the 3-4 shift valve; it varies based on the transmission's engineering.

Question 12

At half throttle, the transmission may downshift from third gear to first gear if the vehicle speed is high enough.

Accepted Answer

At half throttle, the transmission is unlikely to downshift from third to first gear because it would cause excessive engine RPM and potential damage. Downshifts are typically limited to one or two gears unless the vehicle is at a very low speed.

Question 13

Which of the following oil pressures is applied to the end of the shift valve with the calibrated spring?
A) Governor pressure
B) Line pressure
C) Throttle pressure
D) Torque converter pressure

Accepted Answer

The answer of Which of the following oil pressures is...

Question 14

Which of the following is used to control a shift valve in an automatic transmission?
A) Governor pressure
B) Line pressure
C) Cooler Pressure
D) None of the above

Accepted Answer

Governor pressure is used to control a shift valve in an automatic transmission by indicating vehicle speed.

Question 15

On computerized transmissions, which of the following is used to regulate line pressure?
A) A mechanical pressure control regulator valve
B) An electronic pressure control solenoid
C) A variable displacement vane pump
D) An anti-drain back valve

Accepted Answer

An electronic pressure control solenoid is used in computerized transmissions to regulate line pressure by adjusting the hydraulic pressure based on the transmission control module's commands.

Question 16

Line pressure in an automatic transmission needs to be regulated to help control the quality of the shift.

Accepted Answer

Regulating line pressure in an automatic transmission is crucial for ensuring smooth and precise gear shifts, preventing harsh or delayed shifting, and maintaining overall transmission performance.

Question 17

What factors are used to control line pressure so that appropriate force is used to apply and hold the clutches and bands?
A) Engine load
B) The selection of certain gears
C) Both A and B
D) None of the above

Accepted Answer

Both engine load and the selection of certain gears are factors used to control line pressure to ensure the appropriate force is applied to clutches and bands in a transmission system.

Question 18

Which of the following hydraulic pressures is used to apply clutches and bands?
A) Line pressure
B) Governor pressure
C) Boost pressure
D) Band pressure

Accepted Answer

Line pressure is the hydraulic pressure used to apply clutches and bands in an automatic transmission system.

Question 19

Transmission line pressure is varied based on engine load and the selection of certain gears to maintain the ideal application force of the clutches and bands.

Accepted Answer

Transmission line pressure is adjusted to ensure the clutches and bands engage properly, which is necessary for smooth gear shifts and to handle different engine loads effectively.

Question 20

Because transmission line pressure must vary according to engine load and torque demand, other valves are used to act on the pressure regulator valve.

Accepted Answer

In automatic transmissions, additional valves such as throttle valves or modulator valves adjust the pressure regulator valve to ensure the transmission line pressure matches the engine load and torque demand.

Quiz 10: Hydraulically Controlled Transmission

Technician A states that the pump sends fluid out under pressure. This release of fluid creates line pressure. Technician B states that line pressure sent to the throttle valve is mostly exhausted to the transmission pan when the throttle is open and the vehicle is under load. Who is correct?

Technician A states that with the automatic valve in the park position, line pressure is not able to flow past the valve to any other components of the transmission. Technician B states that the pump sends fluid out under pressure to only the pressure regulator valve. Who is correct?

Technician A says that greater clearances between the between the spool valve and the valve body increase sealing. Technician B says that the front pump is turned by the torque converter hub. Who is correct?

Technician A says that spool valves tend to be self-cleaning. Technician B says that park is obtained by mechanically locking one band and one clutch together. Who is correct?

Which of the following are spool valves that direct the flow of hydraulic oil to a clutch or band?

The automatic transmission's shift valve will ______ the passage of transmission oil at line pressure to apply a particular clutch or brake servo.

As governor pressure increases, it pushes on the shift valves towards their upshift position. What determines the sequence in which the shift valves move?

The shift valves are held to the downshift side of their bores by springs.

The spring used with the 2-3 shift valve will be stiffer than the spring used with the 3-4 shift valve in the same transmission.

At half throttle, the transmission may downshift from third gear to first gear if the vehicle speed is high enough.

Which of the following oil pressures is applied to the end of the shift valve with the calibrated spring?

Which of the following is used to control a shift valve in an automatic transmission?

On computerized transmissions, which of the following is used to regulate line pressure?

Line pressure in an automatic transmission needs to be regulated to help control the quality of the shift.

What factors are used to control line pressure so that appropriate force is used to apply and hold the clutches and bands?

Which of the following hydraulic pressures is used to apply clutches and bands?

Transmission line pressure is varied based on engine load and the selection of certain gears to maintain the ideal application force of the clutches and bands.

Because transmission line pressure must vary according to engine load and torque demand, other valves are used to act on the pressure regulator valve.