Exam 8: Hydraulic Fundamentals

Pascal's law states that if we place fluid in a confined space, pressure will:

Where is transmission fluid routed once it leaves the torque converter?

Technician A says that throttle pressure varies with engine load. Technician B says that modulator pressure varies with throttle opening. Who is correct?

We are also able to multiply ______ using Pascal's law.

Which of the following is a type of pump used in an automatic transmission?

Tech A says that a mechanical pressure regulator exhausts excess fluid back to the transmission pan. Tech B says that if the transmission pan is removed, the magnet must be replaced. Who is correct?

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

Which of the following oil pressures act together with the calibrated spring on one end of the shift valve, against governor pressure?

A _______ is often a simple fine-mesh screen made out of metal or plastic such as polyester.

Technician A say orifices are often used in conjunction with spool valves to restrict fluid for timing purposes or to prevent valve fluctuations. Technician B says accumulators are used to dampen the application of spool valves and one way clutches. Who is correct?

Technician A says a shift valve is a spool valve with multiple lands. Technician B says moving the shift lever in the cabin causes the manual valve to move and allows line pressure to flow into the appropriate hydraulic circuit. Which tech is correct?

Technician A says that it is critical to have the proper safety equipment before working on a hybrid. Technician B says that hybrid vehicles use safety interlocks to prevent technician injury so it is not necessary to use protective gloves. Who is correct?

What size of particles can surface filters typically remove from transmission fluid?

Tech A says that band and clutch application charts can help to diagnose faults in a transmission. Tech B says that 100 psi (689 kPa) of pressure on a 2-square-inch piston results in 50 lb (23 kg) of force. Who is correct?

Pascal's law states that if we place fluid in a confined space, such as a transmission hydraulic system, ______ will be transferred ______ in all directions inside the space.

Where may the valve body may be located?

Which of the following check valve designs allow two different control devices can share the outlet passage.

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?

What is placed in the transmission pan is designed to help catch ferrous (iron-containing) particles that could cause severe damage to the internal surfaces of the pump as well as to the seals, bearings, and bushings within the transmission?

Technician A says that the greater the clearance between the gear pump housing and the gear, the more fluid can be pumped through the circuit. Technician B says that the front pump is turned by the torque converter hub. Who is correct?