Exam 10: Hydraulically Controlled Transmission

Technician A says that governor pressure is controlled by torque converter rpm. Technician B says that governor pressure is controlled by output shaft speed. Who is correct?

Throttle valve cable and linkage adjustments are critical on hydraulically controlled automatic transmissions.

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

How can pump output (line) pressure be controlled in an automatic transmission?

Technician A says that the manual valve will direct additional fluid under pressure to the pressure regulator valve. Technician B says the additional pressure from the pressure regulator will cause a higher line pressure in reverse. Who is correct?

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

Technician A says that the throttle valve is controlled by a cable or linkage hooked to the engine throttle linkage. Technician B says that a misadjusted throttle valve cable can prevent wide-open throttle (WOT) on an engine. Who is correct?

At the inboard end of the automatic transmission's governor, there is a gear that engages with another gear that is pressed onto the output shaft.

Tech 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. Tech B says when reverse boost pressure on one side of the reverse valve overcomes governor pressure on the other side, a shift into reverse occurs. Who is correct?

When the transmission is in park, line pressure sent to the throttle valve is sent to the __________ when the throttle is closed and the vehicle is under no load.

The front pump sends fluid out under pressure to all of the following EXCEPT:

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

When the vehicle continues to accelerate, governor pressure:

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

Harsh-shifting transmission could be caused:

Harsh-shifting transmission could be caused:

Technician A says that a transmission can only downshift from third into second in one shift. Technician B says that a transmission can shift from third into first in one shift. Who is correct?

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?

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

Technician A says a pressure control valve spring can be assisted by applying hydraulic pressure along with spring pressure. Technician B says a pressure control valve spring can be assisted by applying linkage pressure along with spring pressure. Who is correct?