Question 1

If a transmission only had a governor valve, it would shift at the same speeds regardless of engine load.

Accepted Answer

A governor valve in a transmission is designed to control shift points based on vehicle speed, not engine load. Therefore, without other components to account for engine load, shifts would occur at the same speeds.

Question 2

Technician A says as vehicle speed decreases, governor pressure increases. Technician B says as vehicle speed increases, governor pressure decreases. Which technician is correct?

Accepted Answer

Governor pressure in a vehicle's transmission increases with vehicle speed, not decreases. Therefore, both technicians are incorrect.

Question 3

As vehicle speed increases, centrifugal force causes weights inside the automatic transmission's governor to move outward on their pivots against the spring or hydraulic pressure in proportion to the vehicle speed.

Accepted Answer

The centrifugal force acting on the weights inside the governor increases with vehicle speed, causing them to move outward, which adjusts the hydraulic pressure or spring tension to control the transmission's gear shifting.

Question 4

Which of the following has multiple lands designed to block or allow line pressure to pass to a band or clutch in order to apply the gear?

Accepted Answer

Shift valves have multiple lands that control hydraulic pressure to engage different gears in an automatic transmission.

Question 5

Technician A says that the converter and cooler operate at line pressure. Technician B says that line pressure causes the manual valve to move during upshifts and downshifts. Who is correct?

Accepted Answer

The answer of Technician A says that the converter and...

Question 6

Technician A says that reciprocating force controls governor pressure. Technician B says that centrifugal force controls governor pressure. Who is correct?

Accepted Answer

Centrifugal force controls governor pressure in automatic transmissions, as it is used to regulate the hydraulic pressure based on the speed of the vehicle.

Question 7

Technician A says that modifying governor weights will alter transmission shifting. Technician B says that excessive modification of the governor weights may cause the transmission to not shift. Who is correct?

Accepted Answer

Modifying governor weights can change the transmission shift points, and excessive modification can prevent proper shifting.

Question 8

An automatic transmission's governor is free to spin inside a precision bore that is lubricated with ______.

Accepted Answer

The governor in an automatic transmission is lubricated with transmission fluid, which is used to ensure smooth operation and proper lubrication of the transmission components.

Question 9

In a hydraulically controlled transmission, how is vehicle speed measured?

Accepted Answer

The answer of In a hydraulically controlled transmission, how is...

Question 10

Which of the following is typically calibrated to a particular engine on a governor?

Accepted Answer

The springs behind the governor's weights are typically calibrated to a particular engine to ensure proper speed regulation and control.

Question 11

Which of the following could cause a governor valve to operate improperly if not cleaned out of the governor assembly during servicing or overhaul?

Accepted Answer

Dirt, old clutch material, and a clogged governor screen can all cause a governor valve to operate improperly if not cleaned out during servicing or overhaul.

Question 12

Which of the following typically may need to be replaced during the servicing of a governor assembly?

Accepted Answer

The answer of Which of the following typically may need...

Question 13

Which of the following is a typical high-performance modification made to the transmissions governor?

Accepted Answer

The answer of Which of the following is a typical...

Question 14

Typically, a directly mounted governor to the output shaft has how many valves?

Accepted Answer

A directly mounted governor can have either one or two valves depending on the design and application requirements.

Question 15

Which of the following governor designs uses two valves: a primary valve and a secondary valve?

Accepted Answer

Staged governors use two valves, a primary and a secondary valve, to control the flow of fluid or gas, allowing for more precise regulation.

Question 16

Under light load, a vacuum modulator gets what type of signal from the engine?

Accepted Answer

Under light load, the engine produces high vacuum and low pressure, which is the signal received by the vacuum modulator.

Question 17

Two technicians are discussing automatic transmissions. Technician A says on many hydraulically controlled transmissions, the modulator valve receives vacuum from the engine. Technician B says the vacuum modulator converts the engine vacuum signal into a hydraulic pressure called modulator pressure. Who is correct?

Accepted Answer

Both Technician A and Technician B are correct. The modulator valve in many hydraulically controlled transmissions does receive vacuum from the engine, and the vacuum modulator does convert the engine vacuum signal into a hydraulic pressure known as modulator pressure.

Question 18

Which of the following describes the hydraulic pressure produce by the modulator valve at high engine vacuum?

Accepted Answer

At high engine vacuum, the modulator valve produces low modulator pressure.

Question 19

Which of the following describes the hydraulic pressure produce by the modulator valve at low engine vacuum?

Accepted Answer

At low engine vacuum, the modulator valve produces high modulator pressure to adjust the transmission's shift points.

Question 20

Two technicians are discussing automatic transmissions. Technician A says as engine vacuum increases, the vacuum moves the modulator valve to expose the exhaust port and reduces the amount of modulated pressure. Technician B says when there is no vacuum to the vacuum modulator valve, a spring moves the valve to increase modulator pressure. Who is correct?

Accepted Answer

Technician A is correct because increased engine vacuum reduces modulated pressure by exposing the exhaust port. Technician B is correct because, without vacuum, the spring increases modulator pressure.

Quiz 10: Hydraulically Controlled Transmission