Question 1

Most transmission shops do not rebuild torque converters due to the amount of time needed to perform the service.

Accepted Answer

The answer of Most transmission shops do not rebuild torque...

Question 2

Technician A says that to properly service a torque converter, it must be cut apart using a special machinist lathe. Technician B says that a serviced torque converter must be welded together then pressure tested for leaks. Who is correct?
A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Accepted Answer

Both technicians are correct. Servicing a torque converter involves cutting it open to access internal components, and after servicing, it must be welded back together and pressure tested to ensure there are no leaks.

Question 3

It is common for some torque converter rebuilders to replace every bushing during the rebuilding process.

Accepted Answer

Replacing every bushing during the rebuilding process is a standard practice to ensure the torque converter functions properly and to prevent future failures.

Question 4

Technician A says that if loose turbine fins are found, they can be re-brazed to the housing or guide ring. Technician B says that if some fins are damaged, they will be straightened. Who is correct?
A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Accepted Answer

The answer of Technician A says that if loose turbine...

Question 5

A torque converter should be balanced once reassembled and pressure tested.

Accepted Answer

Balancing and pressure testing a torque converter after reassembly ensures it operates smoothly and without leaks, preventing potential damage to the transmission system.

Question 6

The torque converter friction material should be inspected and replaced if it shows all of the following EXCEPT:
A) wrong color
B) wear
C) burn marks
D) flaking material

Accepted Answer

The wrong color is not necessarily an indicator of damage or the need for replacement, unlike wear, burn marks, or flaking material, which are clear signs of deterioration.

Question 7

If friction material is to be reused, it is ok to clean it in a solvent tank.

Accepted Answer

Cleaning friction material in a solvent tank can degrade its performance and safety, as solvents may alter the material's properties or leave residues that affect its function.

Question 8

Technician A says the stator should be disassembled to test the one-way roller or sprag assembly. Technician B says that each roller should be inspected for scratches or signs of overheating. Who is correct?
A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Accepted Answer

Both technicians are correct. Technician A is correct that the stator should be disassembled to test the one-way roller or sprag assembly. Technician B is also correct that each roller should be inspected for scratches or signs of overheating as part of the inspection process.

Question 9

Technician A says that a one-way roller that doesn't hold while turning in both directions is good to use for reassembly. Technician B says that once a one-way roller tests ok, it should be lubricated with any type of transmission fluid. Who is correct?
A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Accepted Answer

A one-way roller that doesn't hold in both directions is faulty and should not be used for reassembly. Additionally, the type of lubricant used should be specified by the manufacturer, not just any transmission fluid.

Question 10

Which of the following are replacement choices for clutch friction materials?
A) Kevlar
B) Carbon
C) Teflon
D) Non-asbestos organic

Accepted Answer

The answer of Which of the following are replacement choices...

Question 11

Technician A says that the torque converter should be replaced when rebuilding a transmission. Technician B says that if a converter is not replaced, it should be checked and flushed. Who is correct?
A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Accepted Answer

Both technicians are correct. It is often recommended to replace the torque converter when rebuilding a transmission to ensure reliability. However, if not replaced, it should at least be checked and flushed to remove any contaminants.

Question 12

A torque converter on a transmission that suffered a catastrophic failure should always be replaced due to difficulty in removing all of the debris.

Accepted Answer

A torque converter can trap debris from a transmission failure, making it difficult to clean completely, so replacement is recommended to prevent future issues.

Question 13

A torque converter should always be replaced during rebuilding as the internal lock-up clutch may be worn.

Accepted Answer

The internal lock-up clutch in a torque converter can wear out over time, which can lead to problems with the transmission. Replacing the torque converter during a rebuild will ensure that the new clutch is properly installed and will help to prevent future problems.

Question 14

Torque converters should always be flushed using a specialized converter flushing machine.

Accepted Answer

Torque converters are complex components that require specialized equipment and procedures to flush properly. Using a standard transmission flush machine can damage the torque converter and lead to costly repairs.

Question 15

Technician A says that it is almost impossible to drain all of the fluid out of a converter. Technician B says that it is impossible to remove all of the old fluid and debris without a flushing machine. Who is correct?
A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Accepted Answer

Both technicians are correct. It is difficult to drain all the fluid from a torque converter without specialized equipment, and a flushing machine is often necessary to remove all old fluid and debris from the system.

Question 16

Before reusing a torque converter, the end play should always be checked.

Accepted Answer

Checking the end play ensures that the torque converter is within the manufacturer's specifications and can function properly without causing damage to the transmission system.

Question 17

Technician A says that a turbine tool is needed to test for converter end play. Technician B says that a pair of snap ring pliers can be used. Who is correct?
A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Accepted Answer

Both technicians are correct. A turbine tool is the ideal tool for testing converter end play, but snap ring pliers can also be used in a pinch.

Question 18

The amount of end play measured does not need to be compared to specifications.

Accepted Answer

End play measurements must be compared to manufacturer specifications to ensure proper component function and avoid potential mechanical issues.

Question 19

Technician A says that when measuring converter end play with a special tool, a dial indicator must always be used. Technician B says that when using snap ring pliers, a technician can usually judge the amount of end play with some practice. Who is correct?
A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Accepted Answer

Both technicians are correct. Technician A is correct that a dial indicator is typically used for precise measurement of converter end play. Technician B is also correct that with experience, a technician can often judge end play using snap ring pliers.

Question 20

A sticking brake light switch can cause a torque converter clutch to fail.

Accepted Answer

A sticking brake light switch can cause the torque converter clutch to fail because it can prevent the transmission from shifting properly.

Quiz 9: Torque Converter Principles

Most transmission shops do not rebuild torque converters due to the amount of time needed to perform the service.

Technician A says that to properly service a torque converter, it must be cut apart using a special machinist lathe. Technician B says that a serviced torque converter must be welded together then pressure tested for leaks. Who is correct?

It is common for some torque converter rebuilders to replace every bushing during the rebuilding process.

Technician A says that if loose turbine fins are found, they can be re-brazed to the housing or guide ring. Technician B says that if some fins are damaged, they will be straightened. Who is correct?

A torque converter should be balanced once reassembled and pressure tested.

The torque converter friction material should be inspected and replaced if it shows all of the following EXCEPT:

If friction material is to be reused, it is ok to clean it in a solvent tank.

Technician A says the stator should be disassembled to test the one-way roller or sprag assembly. Technician B says that each roller should be inspected for scratches or signs of overheating. Who is correct?

Technician A says that a one-way roller that doesn't hold while turning in both directions is good to use for reassembly. Technician B says that once a one-way roller tests ok, it should be lubricated with any type of transmission fluid. Who is correct?

Which of the following are replacement choices for clutch friction materials?

Technician A says that the torque converter should be replaced when rebuilding a transmission. Technician B says that if a converter is not replaced, it should be checked and flushed. Who is correct?

A torque converter on a transmission that suffered a catastrophic failure should always be replaced due to difficulty in removing all of the debris.

A torque converter should always be replaced during rebuilding as the internal lock-up clutch may be worn.

Torque converters should always be flushed using a specialized converter flushing machine.

Technician A says that it is almost impossible to drain all of the fluid out of a converter. Technician B says that it is impossible to remove all of the old fluid and debris without a flushing machine. Who is correct?

Before reusing a torque converter, the end play should always be checked.

Technician A says that a turbine tool is needed to test for converter end play. Technician B says that a pair of snap ring pliers can be used. Who is correct?

The amount of end play measured does not need to be compared to specifications.

Technician A says that when measuring converter end play with a special tool, a dial indicator must always be used. Technician B says that when using snap ring pliers, a technician can usually judge the amount of end play with some practice. Who is correct?

A sticking brake light switch can cause a torque converter clutch to fail.