Exam 8: Hydraulic Fundamentals

Technician A states that when diagnosing an automatic transmission problem, it is important to first verify the customer complaint by taking the vehicle on a road test, if possible. Technician B states that after one has verified the customer complaint, one should pay attention and document when the problem occurs. Who is correct?

Learning the function and purposes of each of the hydraulic components in an automotive transmission will help you to diagnose transmission-related problems.

Accumulators are used to:

Which of the following can be caused by excessive transmission fluid temperature?

Technician A says that when reassembling a multidisc clutch piston, it should always be tested with compressed air while listening for a large air leak. Technician B says that an air check should only be performed on a clutch that is completely assembled. Who is correct?

Before we can calculate the amount of force created by a piston, we must calculate the ______ of the piston.

Which of the following devices uses a spring and a spool valve to dump excess fluid back to the transmission pan?

Tech A says that multi-plate clutches must have a specified amount of clearance when they are installed. Tech B says that there should be no clearance when they are installed because the clutch would slip. Who is correct?

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

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

Technician A says that all check balls are the same size in a transmission. Technician B says that some transmissions can use many different sizes of check balls, and should always be installed in the correct position. Who is correct?

Automatic transmission fluid leaving the torque converter can be extremely hot, so it is next routed to the transmission cooler.

An internal transmission filter looks very similar to an engine oil filter.

Which of the following is the formula to calculate the area of a circle?

Technician A says that transmission filters can be located inside or outside of the transmission case. Technician B says that some heavy duty transmissions may use both an internal and external transmission fluid filter. Who is correct?

Tech A says that one type of front pump is a variable displacement pump. Tech B says that the front pump is turned by the torque converter hub. Who is correct?

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

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

There are four basic types of holding devices used to hold a member of the planetary gear set.

Which of the following is a typical part of a mechanical pressure control regulator valve?