Exam 8: Hydraulic Fundamentals

Which design of filter has a thick filtering material that the fluid must pass through?

The hydraulic system of an automatic transmission includes all of the following except:

Which of the following is not a holding device used in an automatic transmission?

Which of the following sets transmission line pressure?

Technician A says to obtain a direct drive or 1:1 gear ratio, the transmission locks together any two members of the planetary gear set. Technician B says to obtain reverse in a planetary set, the ring gear is attached to the output shaft and the planet carrier is held stationary. Who is correct?

If a pressure of 100 psi (689 kPis applied to a piston with a surface area of 3 square inches, what would be the resulting force?

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

Simply put, Pascal's law states that if we place fluid in a confined space, pressure will be transferred equally, in all directions inside that space.

Which of the following is not part of an automatic transmission hydraulic system?

Technician A says the spool valve got its name because of its resemblance to the spool that thread or fishing line comes on. Technician B says that with a spool valve, the clearance between the land and the bore must be just great enough to prevent the valve from sticking as it moves back and forth.

Technician A says pressure-regulated valves are similar to line pressure regulation valves except these valves reduce line pressure to suit specific components. Technician B says shift valves are spool valves that direct the flow of hydraulic oil to a clutch or band upon upshift. Who is correct?

Everything seems to be working fine but the vehicle is not going into neutral. Where could the problem be?

Which of the following is the name used for the larger end of the spool valve?

Transmission orifices are never used in the passage feeding oil pressure to a clutch or band.

Technician A says when the pump pressure acting on the pressure regulator spool valve becomes greater than the spring pressure, the spool valve moves slightly, opening an exhaust port, and excess fluid pressure is exhausted back to the transmission pan. Technician B says the pressure regulator spool valve directs excess fluid to the transmission cooler. Who is correct?

Using the manufacturer's chart, we can start our diagnosis of a failed transmission:

Each of the hydraulic components works with the others to direct fluid under the proper ________ to the appropriate places in the transmission.

In an automatic transmission, which of the following can be used as a brake or holding device?

Before we can calculate the amount of force created with a piston, which of the following do we need to know?

Pascal's law is one of the fundamental physics principles behind the operation of an automatic transmission.