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Automotive Level 2 > Clutch pt. 2 and Drive Line > Flashcards

Clutch pt. 2 and Drive Line Flashcards

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1
Q

The clutch plate is prone to wear. What does this mean?

A

The plate lining/clutch lining is designed to wear faster than the flywheel and pressure plate

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2
Q

What is the approximate mileage a clutch plate will last?

A

About 100,000 miles

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3
Q

What do you do in the case of a worn clutch plate?

A

Replace it

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4
Q

How does clutch wear affect the clutch lining?

A

It gets thinner

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5
Q

List 3 car components found on the underside of a car

A

Cardan shaft
Gearbox
Clutch casing

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6
Q

What is the first thing you must do before disassembling a clutch?

A

Look up the proper procedure in the workshop manual

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7
Q

One the removal of the gearbox, what should you be careful about?

A

Not to damage any lines or cables

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8
Q

List 2 descriptions of the appropriate way to loosen the bolts on a pressure plate

A

Loosened gradually
Loosened diagonally

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9
Q

List 2 things that can happen if you do not loosen the bolts gradually

A

The diaphragm spring may be damaged
Bolts can bend or break

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10
Q

What kind of bearing is used at the centre of the flywheel?

A

Spigot bearing

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11
Q

Which components need to be checked after disassembling the clutch?

A

Clutch plate
Pressure plate
Flywheel

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12
Q

How can you tell that a clutch plate is worn? (1 appearance, 1 symptom)

A

The outer edge (lining) is thin and smooth
The clutch will slip

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13
Q

List 2 causes of clutch slip?

A

A worn clutch lining
A greasy clutch plate

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14
Q

How can you tell that a clutch plate has corroded splines? (1 appearance, 1 symptom)

A

The inside of the centre of the clutch (the spline) is orange
The clutch cannot move freely

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15
Q

How can you tell that a clutch plate is greasy? (1 appearance, 1 symptom)

A

It is shiny and dirty looking
Clutch slip

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16
Q

How can you tell that a clutch pressure plate has heat spots? (1 appearance, 1 symptom)

A

Dark splodges
Has caused clutch slip

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17
Q

What’s one issue that can arise from rivets on the clutch plate?

A

Worn grooves on the inside of the pressure plate

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18
Q

Why is it necessary for the flywheel to be missing no teeth on the outer edge?

A

The starter motor engages on them

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19
Q

List 4 things that can be wrong with the flywheel

A

Missing teeth
Heat spots
Greasy
Worn grooves

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20
Q

If you find oil on the flywheel, pressure plate or clutch plate, what 2 components should you check for oil leaks?

A

Transmission seals
Crankshaft seals

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21
Q

What step must you take before refitting components in the clutch

A

Making sure they are clean and grease free

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22
Q

List 2 components in the clutch that must be replaced every time you perform maintenance

A

The gearbox input shaft
The spigot bearing

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23
Q

What is the first step in fitting the clutch plate and pressure plate?

A

Putting the bolts on by hand

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24
Q

After putting the bolts into the clutch pressure plate by hand, what is the next step?

A

Centring the clutch plate using a dummy input shaft/clutch alignment tool

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25
Q

What does the adjusting mechanism in a mechanically operated clutch do?

A

Adjusts the amount of free travel

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26
Q

What’s another name for a universal joint?

A

Cardan joint

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27
Q

What is enabled by the universal joint?

A

The transfer of a rotational motion through a variable angle

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28
Q

What is the name for the angle formed by the shafts in the power train?

A

Diffraction angle

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29
Q

Name the 2 main parts of the universal joint/cardan joint

A

Yoke
Yoke with flange

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30
Q

What is the angle between the 2 yokes in a cardan joint?

A

90 degrees

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31
Q

Other than the 2 yokes, list 3 components of a universal joint

A

Cross piece
Circlips
Bearing caps

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32
Q

How many of each of these components are in one cardan joint:
Cross pieces
Circlips
Bearing caps

A

1
4
4

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33
Q

What on a universal joint connects the yokes together?

A

The spider

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34
Q

What kind of bearing is used inside a cardan joint?

A

A needle roller bearing

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35
Q

List the 2 functions of the rubber seal in a bearing cap on a universal joint

A

Prevent dirt from entering
Prevent grease from coming out

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36
Q

List the 6 steps of fitting a new clutch, once the old one is removed

A

Fit the clutch pressure plate
Fit the bolts and hand tighten them
Centre the clutch plate with a dummy input shaft/clutch alignment tool
Tighten the bolts diagonally, using a torque wrench
Remove the dummy input shaft/clutch alignment tool
Grease the input shaft

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37
Q
A
38
Q

Give another name for the adjusting mechanism

A

Adjusting nut

39
Q

Should the free travel be adjusted when the clutch plate is partly worn?

A

No, the adjusting mechanism ensures constant free travel

40
Q

List 3 steps of maintenance that should be performed on a hydraulically operated system

A

Checking the fluid level, topping it up
Checking for leakages
Bleeding the air from the system if necessary

41
Q

Relating to a single universal joint:
If the input shaft rotates at 100 rpm, what speed would the output shaft rotate?

A

100 rpm

42
Q

What is the term for a motion in which the speed is not changing?

A

A uniform motion

43
Q

The motion of the universal joint/cardan joint is normally uniform. What would cause it to become non-uniform? Explain this in 2 ways, mention the effect it has on the rpm in the second explanation.

A

When the diffraction angle changes
When the yokes are not aligned at 90 degrees, meaning the rpm will waver twice each rotation

44
Q

Give another name for a uniform motion in a universal joint/cardan joint.
And its equivalent for non-uniform motion.

A

Constant-velocity drive
Non-constant velocity drive

45
Q

You are given a graph that represents the angles of rotation in the input and output shafts in a universal shaft. They are at a diffraction angle. Would the input or output be the squiggly line. Which one would be the straight line?

A

Output
Input

46
Q

You are given a graph that represents the angles of rotation in the input and output shafts in a universal shaft. They are at a diffraction angle. Name the x axis. Name the y axis.

A

Angle of output shaft
Angle of input shaft

47
Q

When the angles of the input shaft and output shaft on a cardan shaft are at their most different, which one is running slow, compared to the other? Is this a higher or lower angle?

A

The output shaft is running slow
On the graph, it looks like a higher angle, but is actually a lower one

48
Q

Why

A
49
Q

What does CV joint stand for?

A

Constant velocity joint

50
Q

Why are there grooves in the baulk ring?

A

To get oil out, to stop it from baulking

51
Q

Out of the CV joint and the plunge type joint, which one is nearer to the wheel? Which one is the inner joint?

A

CV joint
Plunge type joint

52
Q

What does the plunge type joint do?

A

Adjusts to bumps, pot-holes and other changes in level

53
Q

CV joints produce a non-uniform motion. To counteract this, 2 CV joints are used. List 3 requirements needed to achieve a uniform motion using 2 CV joints.

A

Shafts operate in the same plane
Diffraction angles of both joints are equal
Joints are 90 degrees out of sync

54
Q

If there is an input shaft leading into one CV joint and an output shaft leading out of the other, what is the name given to the shaft that connects both CV joints?

A

The auxiliary shaft

55
Q

List 3 set-ups/configuration can counteract non-uniformity

A

2 universal joints in Z-configuration
2 universal joints in W-configuration
A double universal joint

56
Q

Name the 2 most widely used types of CV joint

A

Rzeppa joint
Tripod joint

57
Q

Lit the 5 main components of the Rzeppa joint

A

Cup
Spider
Cage
Ball bearings
Shaft

58
Q

What do the balls in the Rzeppa joint move in?

A

In the ball tracks

59
Q

What is the cage in a Rzeppa joint used for?

A

To keep the balls in the right position

60
Q

What is the drive shaft boot on the Rzeppa joint for?

A

To keep grease in and dirt out

61
Q

When the diffraction angle of a Rzeppa joint is increased, what happens to the ball cage?

A

It remains at the same angle

62
Q

Is the motion of the Rzeppa joint output shaft uniform or non-uniform?

A

Uniform

63
Q

Can a Rzeppa joint be used to form a CV joint?

A

Yes, because the output shaft rotates uniformly

64
Q

What is the maximum diffraction angle of a Rzeppa joint? Is this larger or smaller than other joints that would perform the same task like CV joints?

A

50 degrees
Larger

65
Q

The Rzeppa joint can accomodate a large diffraction angle. Where in the car is this very useful?

A

In the drive train of a front wheel drive car, at the wheels

66
Q

List 5 components of a construction tripod joint

A

Shaft
Tripod roller
Circlip
Housing
Roller guide

67
Q

How many rollers are there in a construction tripod joint?

A

3

68
Q

Where do the rollers in a construction tripod joint move?

A

In the roller guide

69
Q

What kind of bearing is used in the tripod roller of a construction tripod joint?

A

Needle roller bearing

70
Q

What is the maximum diffraction angle of a tripod joint?

A

25 degrees

71
Q

Is the motion of the tripod joint output shaft uniform or non-uniform?

A

Uniform

72
Q

List 1 disadvantage of using a tripod joint, compared to the Rzeppa joint, and 1 advantage

A

Lower maximum diffraction angle (half)
Accomodation for changes in length

73
Q

Tripod joints are able to slightly change length. How many mm difference can they manage? Where in the car is this useful?

A

55mm
Connecting the drive shaft to the differential

74
Q

Name 2 changes that need to be neutralised by a CV joint when the vehicle is turning a corner

A

Changes in diffraction angle
Changes in length

75
Q

Name 2 changes that need to be neutralised by a CV joint when the vehicle is moving up-hill

A

Changes in diffraction angle
Changes in length

76
Q

Name 2 situations in which length and diffraction angle changes will occur, which would need to be neutralised by the CV joint

A

Steering
Driving over a speed bump

77
Q

List 3 advantages of an automatic gearbox

A

Better use of engine characteristics
More gradual load take up on the power train
More comfort (best gear is selected automatically

78
Q

List 4 disadvantges of an automatic gearbox

A

Increased fuel consumption
Increased size and weight
Increased cost
Car can’t be towed to start the engine

79
Q

List the 5 options the driver of an automatic car can choose between, using the selector (first the letters, then each full word)

A

P, N, R, D, M
Park
Reverse
Neutral
Drive
Manual

80
Q

True or false for each.
When park is selected in an automatic car:
The parking brake is applied
The drive is locked
The car comes to a standstill
The car will accelerate if you press the accelerator
Engine speed will increase if you press the accelerator
The car can be towed

A

False
True
True
False
True
False

81
Q

True or false for each.
When drive is selected in an automatic car:
The car will immediately start moving forward
The car will not respond to the accelerator
Gears will be selected automatically
The engine speed will not change

A

True
False
True
False

82
Q

True or false for each.
When reverse is selected in an automatic car:
There are 3 gears that reverse can be in

A

False

83
Q

If in the manual setting in an automatic car, you press the manual gear down 1 gear, what will happen to the engine speed?

A

If will increase briefly, then decrease

84
Q

The 5 switch settings present in the majority of automatic cars are P, N, R, D, M. List the 3 optional switch settings (letters first then full words)

A

E, S, W
Economy
Sport
Winter

85
Q

List 2 features of the economy setting on an automatic gearbox

A

Gears are selected in an ideal rev range
Minimises fuel consumption

86
Q

List 2 features of the sport setting on an automatic gearbox

A

Gears are changed at higher revs
Improves acceleration

87
Q

List 2 features of the winter setting on an automatic gearbox

A

Gears are changed at lower revs
Reduces torque, so less chance of wheel spin

88
Q

How many generations of the automatic gearbox have there been? What are they called?

A

1st generation
2nd generation
3rd generation
(3)

89
Q

Describe the 1st generation gearbox
Describe the 3rd generation gearbox

A

Hydraulically activated and mechanically operated
Valve block is activated and operated electronically

90
Q

In an automatic gearbox:
What does the oil pump do?
What does the hydraulic valve block do?

A

Provides the necessary oil pressure
Transfers the pressure to the multi-plate clutches that need to be activated

91
Q

Name 2 systems to mechanically operate a process

A

Using a cable
Using a set of rods

92
Q
A

Automotive Level 2 (21 decks)

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