Exam 10: Hydraulically Controlled Transmission

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?

Technician A says that the 1-2 shift valve spring is stronger than the 2-3 shift valve spring. Technician B says the 2-3 shift valve spring is stronger than the 1-2 shift valve spring. Who is correct?

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

Technican A says on vehicles that use a kickdown solenoid, a switch can be mounted under the accelerator pedal. Technician B says on vehicles that use a kickdown solenoid, a switch can be mounted to the throttle linkage on the engine. Who is correct?

Technician A says as engine load increases, the line pressure in a transmission must increase for greater holding force in clutches and bands. Technician B says some transmissions can achieve 200 pounds per square inch (psi) of line pressure during wide open throttle (WOT). Who is correct?

When does the kickdown valve force downshifts?

Which of these is least likely to cause harsh shifting during normal cruising speeds?

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

Technician A says that when the throttle is opened all of the way, the switch opens, stopping current flow to the solenoid in the transmission. Technician B says that in a vehicle with a kickdown solenoid, the switch may be under the accelerator pedal or attached to the throttle linkage on the engine. Who is correct?

As the vehicle accelerates, what component controls line pressure flowing past it?

The shifting of a hydraulically controlled transmission is a constant push-pull between all of the following EXCEPT:

Technician A says that a vacuum modulator converts manifold vacuum into an engine load signal. Technician B says that the manual valve is moved by governor pressure to force a shift. Who is correct?

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?

Technician A says that as throttle pressure increases, upshifts are delayed. Technician B says that as throttle pressure drops, upshifts are allowed at lower speeds. Who is correct?

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

Technician A says increased throttle pressure allows earlier upshifts. Technician B says decreased throttle pressure delays upshifts. Who is correct?

Technician A says a kickdown moves a valve inside a transmission when the accelerator is pressed all the way down. Techniican B says the kickdown valve opens a passage, allowing full line pressure to pass the kickdown valve to increase throttle pressure. Who is correct?

Which of the following is a method of operating a kickdown?

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?

When is the line pressure sent to the throttle valve, or vacuum modulator, exhausted to the transmission pan?