Deck 6: Torque Converters and Oil Pumps

Question 1

A stator is known as a reactor.

Answer 1

False

Question 2

The redirection of fluid by the stator increases torque loss.

Answer 2

False

Question 3

The stator is which member of the torque converter?

A)Driving
B)Reaction
C)Input
D)Output

Answer 3

B

Question 4

Technician A says when the coupling phase of the torque converter occurs and no torque multiplication takes place, there is little vortex flow and the engine's torque is carried through the converter by rotary flow of fluid. Technician B says when the speed of the turbine nearly equals the speed of the impeller, the fluid flows against the stator vanes in the same direction as the fluid from the impeller. Who is correct?

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

Question 5

Technician A says a torque converter clutch plate has a spring-cushioned damper assembly in the center of the disc, and friction material on the outside of the plate. Technician B says the torque converter clutch plate is splined to the turbine shaft, and the plate locks the turbine to the converter when the piston is applied. Who is correct?

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

Question 6

A typical torque converter clutch has a plate that acts as a clutch piston and is splined to the back of the turbine.

Question 7

A lock-up torque converter reduces the amount of power lost through the converter.

Question 8

The flywheel for the engine consists of the flexplate and the torque converter.

Question 9

Oil control floats, located between the oil pan and the gear sets, help to prevent fluid aeration.

Question 10

A converter clutch is also called a lock-up clutch.

Question 11

BMW's 6HP26 transmission is based on the Lepelletier planetary gear design.

Question 12

The impeller turns more slowly with high engine speeds.

Question 13

Rotary fluid flow is in the direction of the impeller.

Question 14

Technician A says installing a thrust washer between the oil pump and the direct or front clutch will correct torque converter end play. Technician B says the torque converter must be installed in the transmission before checking end play. Who is correct?

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

Question 15

The use of water-based cleaners or mineral spirits to flush the converter is recommended.

Question 16

Slippage of the clutch shoes allows for some torque division.

Question 17

Which of the following is not true of a lock-up torque converter?

A)It eliminates slippage.
B)It is a mechanical link.
C)It reduces fluid temperature.
D)It increases fuel economy.

Question 18

Technician A says a vehicle that has poor acceleration may be the result of a free wheeling or non-locking one-way stator clutch. Technician B says a vehicle having acceptable low speed operation but poor high speed performance may be the result of a seized one-way stator. Who is correct?

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

Question 19

Torque capacity is the ability of the converter clutch to absorb and transmit torque.

Question 20

The two types of fluid flow inside the fluid coupling are vortex and rotary.

Question 21

Technician A says a drive chain is used in some transaxles to connect converter output with the transaxle input shaft. Technician B says the torque converter is mounted in line with the transmission's input shaft. Who is correct?

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

Question 22

Technician A says the application of hydraulic pressure on the clutch will cause nearly all converter clutches to engage. Technician B says electrical malfunctions always result in torque converter clutch control problems. Who is correct?

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

Question 23

​Technician A says when the transmission is in gear, the fluid coupling allows the vehicle to stop without stalling. Technician B says this is because the impeller doesn't rotate fast enough to drive the turbine. Who is correct?

A)​A only
B)​B only
C)​Both A and B
D)​Neither A nor B

Question 24

Technician A says excessive pressure in the torque converter will cause a torque converter to balloon. Technician B damage to the pump can be the result of a ballooned torque converter. Who is correct?

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

Question 25

Technician A says all automatic transmissions use a torque converter to transfer power from the engine to the transmission. Technician B says some automatic transmissions use a torque converter to transfer power from the engine to the transmission.

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

Question 26

Technician A says to replace the converter if it has signs of being overheated. Technician B says excessive hub runout is not a reason to replace the converter. Who is correct?

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

Question 27

Technician A says that most vehicles that use CVTs do not use a torque converter. Technician B says that the diameter of the drive and driven pulleys does not change and this provides for a constant gear ratio. Who is correct?

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

Question 28

Which of the following is the fluid coupling that connects the engine's crankshaft to the transmission's input shaft.

A)Solenoid converter
B)Stator
C)Torque converter
D)Clutch assembly

Question 29

Technician A says the flexplate must be flexible enough to allow the front of the converter to move forward and backward if it expands or contracts due to heat or pressure. Technician B says the torque converter's rear hub is bolted to the flexplate. Who is correct?

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

Question 30

Which of the following CVT components is used in place of a torque converter.

A)A planetary gear set
B)A system of belts and pulleys
C)A system of sprockets and chains
D)An internal start clutch

Question 31

Technician A says during the operation of the stator, only a portion of the fluid returning from the turbine to the impeller passes through the stator. Technician B says when the stator is in operation, it redirects the fluid leaving the turbine back to the impeller. Who is correct?

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

Question 32

Which of the following is not a component of a typical torque converter?

A)A turbine
B)An impeller
C)A stator
D)All are components.

Question 33

Which of the following is not true of a torque converter?

A)It multiplies torque.
B)It is a fluid coupling.
C)It allows some slippage.
D)All are correct.

Question 34

Technician A says most late-model GM transmissions feature their Electronic Controlled Capacity Clutch (ECCC)system. Technician B says the ECCC allows for a variable amount of clutch slippage. Who is correct?

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

Question 35

Vortex fluid flow provides for which of the following scenarios?

A)Torque multiplication
B)Stall speed
C)High turbine speed
D)High impeller speed

Question 36

​While discussing GM torque converters: Technician A says the TCC assembly allows for a mechanical link between the impeller and the turbine. Technician B says this is true during all gear ranges except Park, Reverse, Neutral, and Drive Range-First Gear. Who is correct?

A)​A only
B)​B only
C)​Both A and B
D)​Neither A nor B

Question 37

Technician A says that late-model Hondas and Acuras use a four-speed transmission. Technician B says that in late-model Hondas and Acuras partial lock-up of the converter clutch is not allowed. Who is correct?

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

Question 38

Technician A says that CVTs offer an infinite number of gear ratios. Technician B says that CVTs allow the engine to always operate at its most efficient rpm. Who is correct?

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

Question 39

Technician A says that the late model Chrysler EMCC and the late model GM ECCC are similar in design and have similar operating characteristics. Technician B says that on Chryslers Converter Controls 62TE the converter clutch is never engaged during first-gear operation. Who is correct?

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

Question 40

Technician A says in order to force TCC lock-up, an automatic transaxle uses a solenoid. Technician B says two hollow shafts from the transmission splined to separate gear set members in the converter are found in an automatic transaxle. Who is correct?

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

Question 41

The ____________________ directs fluid flow from the turbine back to the impeller.

Question 42

A(n)____________________ uses two gears to generate fluid pressure, not crescent.

Question 43

​While discussing a positive-displacement gear type pump: Technician A says use a straight edge and feeler gauge to check gear side clearance. Technician B says normally the maximum clearance is 0.15 inch. Who is correct?

A)​A only
B)​B only
C)​Both A and B
D)​Neither A nor B

Question 44

____________________ refers to cycles per second.

Question 45

A(n)_________________________ uses ATF as a medium to transfer engine torque.

Question 46

A(n)____________________ uses an inner and outer rotor to generate pressure.

Question 47

____________________ occurs when the fluid path is in the same circular direction as the rotation of the impeller.

Question 48

​Technician A says a cooler located in the radiator can be replaced by a radiator shop if necessary. Technician B says if an external cooler is plugged it may make sense to replace it. Who is correct?

A)​A only
B)​B only
C)​Both A and B
D)​Neither A nor B

Question 49

​Technician A says a shudder after the converter clutch engages could be caused by a cracked spark plug. Technician B says a transmission fluid change may fix a TCC shudder. Who is correct?

A)​A only
B)​B only
C)​Both A and B
D)​Neither A nor B

Question 50

The ____________________ allows partial engagement of the converter clutch.

Question 51

____________________ allows partial and full engagement of the TCC.

Question 52

The ____________________ are springs located in the damper assembly.

Question 53

____________________ direct vortex flow to provide smooth turbulence-free fluid flow.

Question 54

​ Vane-type pumps are ____________________ whose output can be reduced when  high fluid pressures are not necessary.

Question 55

A(n)____________________ produces a fixed amount of fluid flow for each shaft rotation.

Question 56

____________________ is a type of pump that uses two gears.

Question 57

Technician A says that a dual-stage positive displacement oil pump, such as the design used by some Chrysler transmissions, allows the pump to deliver the pressure and fluid flow of a large displacement pump at high engine speeds. Technician B says that the dual stage pump delivers the pressure and fluid flow of a large displacement pump at lower engine speeds. Who is correct?

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

Question 58

A(n)____________________ is part of the clutch plate assembly that cushions clutch engagement.

Question 59

A(n)____________________ prevents the clutch from engagement until the transmission or transaxle is in third gear.

Question 60

____________________ is fluid flow circulating between the impeller and the turbine.

Question 61

____________________ is a chemical used to clean coolers and other transmission and transaxle parts.

Question 62

_______________ _______________ occurs when there is high impeller speed and low turbine speed.​

Question 63

Explain the function of a stator.

Question 64

A(n)____________________ uses vanes and a cam to generate fluid pressure.

Question 65

​
In a CVT transaxle the __________ and __________ provide all of the drive ratios.

Question 66

The ____________________ allows the clutch to lock in a very smooth manner.

Question 67

Describe vortex fluid flow.

Question 68

A torque converter should be replaced if there is an excessive amount of ____________________ in the fluid.

Question 69

Explain the function of damper springs in a converter clutch assembly.

Question 70

The ____________________ is the solenoid that controls the clutch.

Question 71

____________________ is when the converter expands from excessive pressure.

Question 72

An EMCC allows the converter to ____________________ engage. This feature limits the amount of converter ____________________.

Question 73

Outline the procedure for checking a torque converter for signs of fluid contamination.

Question 74

When dealing with a late model Chrysler-built vehicle, list the five conditions that must be present before the computer will order TCC engagement.

Question 75

The ____________________ removes excess heat from the ATF.

Question 76

The ____________________ aids in directing fluid flow from the turbine back to the impeller.

Question 77

Many hybrid vehicle transmissions are fitted with an ____________________ pump, which maintains fluid pressure in the transmission even when the engine is not ____________________.

Question 78

List the components that have been added to a basic torque converter to make it a lock-up converter.

Question 79

____________________ is the fastest speed an engine can reach while the turbine is held stationary.

Question 80

List at least four indications that the torque converter should be replaced.