Deck 20: Dual Clutch Transmissions

Question 1

Which of the following is the main advantage of using a dual clutch system in vehicles?

A) Improved fuel economy
B) Greater speed
C) Less emissions
D) Reduced cost

Answer 1

A

Question 2

Choose the correct statement with respect to the construction and operation of a dual clutch transmission.

A) The first clutch will drive even-numbered gears, 2, 4, and 6.
B) The clutches are each connected to a separate input shaft that drives its own set of gear ratios.
C) The first clutch operates reverse in all transmissions.
D) The second clutch will drive odd-numbered gears, 1, 3, and 5.

Answer 2

B

Question 3

Tech A states that gears 1, 2, and 3 are on one shaft in a dual clutch transmission and 4, 5, and 6 are on the other shaft. Tech B states that gears 1, 3, and 5 are on one shaft and 2, 4, and 6 are on the opposite shaft. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Answer 3

B

Question 4

Choose the correct statement with respect to the construction of a dry clutch system.

A) They are hydraulically actuated.
B) They contain one set of multidisc clutches.
C) They are used in high-torque vehicles.
D) They contain two sets of single-disc clutches.

Question 5

The downside of the dry clutch system is that:

A) it is relatively more noisy.
B) it is difficult to operate in start-and-stop traffic.
C) it is not suitable for long drives.
D) clutch application tends to be more noticeable.

Question 6

The function of the damper springs is to:

A) help absorb some of the engine pulses.
B) reduce clutch length.
C) reduce friction.
D) increase fuel efficiency.

Question 7

Tech A states that dual clutch transmissions are actually more like a manual transmission than a traditional automatic. Tech B states that rebuilding a dual clutch transmission requires the same tools as rebuilding a manual transmission. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 8

Tech A states that a wet clutch is cooled with antifreeze. Tech B states that a dry clutch does not use hydraulic pressure to apply and release the clutches. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 9

Tech A states that replacing a clutch on a dual clutch transmission is the same as replacing a clutch on a manual transmission. Tech B states that if transmission fluid leaks onto the clutch disc on a dry clutch system the clutch will slip. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 10

Tech A states that each clutch in a dual clutch transmission connects to a different input shaft. Tech B states that dual clutches are both connected to the same input shaft to give greater holding power. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 11

Tech A states that dual clutch transmissions use a traditional flywheel like a manual transmission. Tech B states that dual clutch transmissions use a flexplate like an automatic. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 12

In a wet clutch system, which of the following directs the flow of hydraulic oil?

A) TCM-controlled solenoids
B) Balance pistons
C) Seals in the clutch assembly
D) Clutch pistons

Question 13

The function of the blocker ring synchromesh unit is to:

A) prevent the partial application of the clutch by centrifugal force.
B) synchronize the speeds of the gear and the shaft before engagement.
C) drive the ring gear on the differential.
D) push up or pull down on the shift forks when needed.

Question 14

Tech A states that on a dual clutch transmission one or more of the synchronizers must be engaged in order for the parking pawl to engage. Tech B states that both clutches are applied to park the vehicle. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 15

Which of the following should be done after installing the clutch release bearing assembly into the case?

A) Lubricate the input shaft splines.
B) Install the spring bolts.
C) Install the Z washers.
D) Install the clutch bearing adapter.

Question 16

All of the following statements with respect to replacing the clutch on dry dual clutch transmission are true except:

A) The input shaft snap ring cannot be reused.
B) Wet the clutch dust before wiping it out.
C) When installing spring bolts, make sure the timing marks line up properly.
D) The installation procedure for a new clutch and the reinstallation procedure for an old clutch are the same.

Question 17

When replacing the motors or the clutch assembly, the computer must be reset to:

A) enable adaptive learning.
B) update the software used.
C) delete old DTCs.
D) align the clutch.

Question 18

Tech A states that after replacing a clutch in a dual clutch vehicle the technician should take the vehicle on an extended test drive (a few miles). Tech B states that all adaptives must be performed before test driving the vehicle. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 19

Tech A states that when replacing a dual clutch an entire replacement kit should be purchased that includes necessary seals, actuators, etc. Tech B states that the clutches can be purchased individually so you can replace a single clutch only. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 20

Tech A states that it will be necessary to remove the transmission from the vehicle to replace the dual clutch. Tech B states that if the clutch needs to be replaced the entire transmission should be rebuilt. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 21

A wet clutch is operated by:

A) TCM controlled solenoids that control hydraulic oil.
B) PCM controlled hydraulic pistons.
C) TCM controlled high-speed motors.
D) None of the above.

Question 22

A dry clutch system is operated by:

A) TCM controlled solenoids that control hydraulic oil.
B) PCM controlled hydraulic pistons.
C) TCM controlled high-speed motors.
D) None of the above.

Question 23

Which of the following is NOT true regarding a dry clutch system?

A) It uses a set of parallel clutches.
B) High speed, brushless AC motors are used.
C) When servicing certain components, an adaptive learning must be performed.
D) B and C only

Question 24

On a dual clutch system, input shaft #1 runs through the middle of input shaft #2.

Question 25

Technician A says that there are two output shafts in a dual clutch transmission. Technician B says that there is a center main shaft that is actually both input shafts. Who is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question 26

Technician A says that the 6DCT250 transmission moves the shift forks through a set of gears and machined cams via a cable. Technician B says that a special cam gear prevents two gears from being engaged at the same time. Who is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question 27

Each clutch in a dry clutch system is operated by the same clutch release mechanism.

Question 28

Technician A says that when a transmission is in first gear, the first input shaft (or the hollow shaft) is connected to the engine. Technician B says that when the transmission is in second gear, the first input shaft (or the hollow shaft) is connected to the engine. Who is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question 29

When a dual clutch transmission is in reverse, power flows through input shaft #1.

Question 30

The special tools to repair some dual clutch transmissions can cost over $6000.

Question 31

Which of these transmissions uses two, either wet or dry, clutches in place of a standard torque converter to connect the engine to the transmission?

A) Continuously variable transmissions
B) Power-splitting transmissions
C) Dual-clutch transmissions
D) Parallel hybrid transmission

Question 32

Which of the following terms is used to identify clutches that are designed to operate immersed in hydraulic oil or transmission fluid?

A) Wet clutch
B) Oiled clutch
C) Dry clutch
D) Fluid-immersed clutch

Question 33

What type of clutches are used to hold or drive individual members of the planetary set in an automatic transmission?

A) Single-disc dry clutch
B) Single-disc wet clutch
C) Multi-disc wet clutch
D) Multi-disc dry clutch

Question 34

Which of the following statements is true with respect to a dry clutch?

A) It contains one set of multidisc clutches.
B) It is actuated hydraulically.
C) It is typically used in higher-torque vehicles.
D) It contains two sets of single-disc clutches.

Question 35

Which of the following statements is true with respect to a wet clutch?

A) It is actuated hydraulically.
B) It contains one set of wet multidisc clutches.
C) It contains two sets of single-disc clutches.
D) It is actuated pneumatically.

Question 36

Tech A states that the transmission of a dry clutch system does not have a hydraulic pump of any kind. Tech B states that the transmission of a dry clutch system is lighter and more fuel efficient. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 37

A __________ contains two sets of single disc clutches, similar to a traditional manual transmission clutch disc.

A) Dry clutch
B) Parallel clutch
C) Nested clutch
D) Wet clutch

Question 38

A customer has a concern that their new vehicle, equipped with a dry-type dual clutch, shifts rough. Which of these is most likely the cause?

A) The clutch damper springs are broken or weak.
B) This is a normal operating condition for this vehicle, and the customer needs to be informed on this style of transmission operation.
C) The hydraulic control system is malfunctioning.
D) There is a problem with the hydraulic wet clutch fluid.

Question 39

Technician A says that the high-performance models are typically equipped with a paddle-shifted dry clutch system to handle the high torque produced by the engine. Technician B says that a wet-type clutch is the type of clutch system with a hydraulic system. Who is correct?

A) Technician A
B) Technician B
C) Both Technicians A and B
D) Neither Technician A nor B

Question 40

Technician A says that a dry clutch is lighter weight and is used for more fuel efficiency. Technician B says that a dry clutch has a hydraulic system that controls operation and adds weight to the system. Who is correct?

A) Technician A
B) Technician B
C) Both Technicians A and B
D) Neither Technician A nor B

Question 41

Technician A says that dual clutch systems contain a set of damper springs to absorb engine pulses while the vehicle is driving. Technician B says that the damper springs help reduce damaging shift shock as the clutch is applied. Who is correct?

A) Technician A
B) Technician B
C) Both Technicians A and B
D) Neither Technician A nor B

Question 42

A dual clutch transmission is a type of automatic transmission that closely resembles a manual transmission.

Question 43

Dual clutch transmissions still use a torque converter.

Question 44

Technician A says that a dual clutch transmission has improved fuel economy. Technician B says that the dual clutches are each connected to a separate input shaft that drives its own set of gears. Who is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question 45

A dual clutch transmission can be either wet clutches or dry clutches.

Question 46

Technician A says that a wet clutch is not hydraulically actuated. Technician B says that a dry clutch contains two single disc clutches for use in high torque applications. Who is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question 47

In a dual clutch system, one clutch drives the even numbered gears while the other clutch drives the odd numbered gears.

Question 48

Which of the following statements regarding a dry clutch system is NOT true?

A) There is no hydraulic pump.
B) There is no hydraulic system to operate the internal components.
C) The shifts are very smooth.
D) The shifts are very rough.

Question 49

The dual clutch system can either be nested or be in parallel configuration.

Question 50

Most FWD applications use a nested clutch design as it is shorter in length.

Question 51

The dual clutch system contains a set of damper springs. Technician A says that these springs help reduce shift shock as the clutch is applied. Technician B says that the springs help absorb engine pulses while driving the vehicle. Who is correct?

A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question 52

A dual clutch transmission does not use a ________.

A) differential gear
B) torque converter
C) gear selector
D) park prawl

Question 53

Tech A states that dual clutch transmissions and dual clutch manual transmissions are the same. Tech B states that dual clutch transmissions are different from dual clutch manual transmissions. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 54

Tech A states that the dual clutch transmission employs two clutches that are combined into a single assembly. Tech B states that in a dual clutch transmission, one clutch drives the even numbered gears while the other clutch drives the odd numbered gears. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 55

Identify the component that operates reverse in all dual clutch transmissions.

A) First clutch
B) Second clutch
C) Clutch bearing adapte
D) Varies with transmission

Question 56

Identify the component given in the figure.

A) Heavy-duty dual clutch for a manual transmission
B) Dry dual clutch
C) Wet clutch
D) Dual clutch transmission

Question 57

Identify the component given in the figure.

A) Heavy-duty dual clutch for a manual transmission
B) Dry dual clutch
C) Wet clutch
D) Dual clutch transmission

Question 58

Identify the component given in the figure.

A) Heavy-duty dual clutch for a manual transmission
B) Single clutch transmission
C) Dry dual clutch
D) Dual clutch transmission

Question 59

Which of the following should be done after installing the clutch release bearing assembly into the case?

A) Lubricate the input shaft splines.
B) Install the spring bolts.
C) Install the Z washers.
D) Install the clutch bearing adapter.

Question 60

All of the following statements with respect to replacing the clutch on dry dual clutch transmission are true except:

A) The input shaft snap ring cannot be reused.
B) Wet the clutch dust before wiping it out.
C) When installing spring bolts, make sure the timing marks line up properly.
D) The installation procedure for a new clutch and the reinstallation procedure for an old clutch are the same.

Question 61

When replacing the motors or the clutch assembly, the computer must be reset to:

A) enable adaptive learning.
B) update the software used.
C) delete old DTCs.
D) align the clutch.

Question 62

Tech A states that after replacing a clutch in a dual clutch vehicle the technician should take the vehicle on an extended test drive (a few miles). Tech B states that all adaptives must be performed before test driving the vehicle. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 63

Tech A states that when replacing a dual clutch an entire replacement kit should be purchased that includes necessary seals, actuators, etc. Tech B states that the clutches can be purchased individually so you can replace a single clutch only. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 64

Tech A states that it will be necessary to remove the transmission from the vehicle to replace the dual clutch. Tech B states that if the clutch needs to be replaced the entire transmission should be rebuilt. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 65

Choose the correct statement with respect to the construction of a dry clutch system.

A) They are hydraulically actuated.
B) They contain one set of multidisc clutches.
C) They are used in high-torque vehicles.
D) They contain two sets of single-disc clutches.

Question 66

The downside of the dry clutch system is that:

A) it is relatively more noisy.
B) it is difficult to operate in start-and-stop traffic.
C) it is not suitable for long drives.
D) clutch application tends to be more noticeable.

Question 67

In a wet clutch system, which of the following directs the flow of hydraulic oil?

A) TCM-controlled solenoids
B) Balance pistons
C) Seals in the clutch assembly
D) Clutch pistons

Question 68

The function of the blocker ring synchromesh unit is to:

A) prevent the partial application of the clutch by centrifugal force.
B) synchronize the speeds of the gear and the shaft before engagement.
C) drive the ring gear on the differential.
D) push up or pull down on the shift forks when needed.

Question 69

The function of the damper springs is to:

A) help absorb some of the engine pulses.
B) reduce clutch length.
C) reduce friction.
D) increase fuel efficiency.

Question 70

Tech A states that dual clutch transmissions are actually more like a manual transmission than a traditional automatic. Tech B states that rebuilding a dual clutch transmission requires the same tools as rebuilding a manual transmission. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 71

Tech A states that on a dual clutch transmission one or more of the synchronizers must be engaged in order for the parking pawl to engage. Tech B states that both clutches are applied to park the vehicle. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 72

Tech A states that a wet clutch is cooled with antifreeze. Tech B states that a dry clutch does not use hydraulic pressure to apply and release the clutches. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 73

Tech A states that replacing a clutch on a dual clutch transmission is the same as replacing a clutch on a manual transmission. Tech B states that if transmission fluid leaks onto the clutch disc on a dry clutch system the clutch will slip. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 74

Tech A states that each clutch in a dual clutch transmission connects to a different input shaft. Tech B states that dual clutches are both connected to the same input shaft to give greater holding power. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 75

Tech A states that dual clutch transmissions use a traditional flywheel like a manual transmission. Tech B states that dual clutch transmissions use a flexplate like an automatic. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 76

Which of the following is the main advantage of using a dual clutch system in vehicles?

A) Improved fuel economy
B) Greater speed
C) Less emissions
D) Reduced cost

Question 77

Choose the correct statement with respect to the construction and operation of a dual clutch transmission.

A) The first clutch will drive even-numbered gears, 2, 4, and 6.
B) The clutches are each connected to a separate input shaft that drives its own set of gear ratios.
C) The first clutch operates reverse in all transmissions.
D) The second clutch will drive odd-numbered gears, 1, 3, and 5.

Question 78

Tech A states that gears 1, 2, and 3 are on one shaft in a dual clutch transmission and 4, 5, and 6 are on the other shaft. Tech B states that gears 1, 3, and 5 are on one shaft and 2, 4, and 6 are on the opposite shaft. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 79

A wet clutch is operated by:

A) TCM controlled solenoids that control hydraulic oil.
B) PCM controlled hydraulic pistons.
C) TCM controlled high-speed motors.
D) None of the above.

Question 80

A dry clutch system is operated by:

A) TCM controlled solenoids that control hydraulic oil.
B) PCM controlled hydraulic pistons.
C) TCM controlled high-speed motors.
D) None of the above.