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Autobody Technician Year 4 > Exam 4 > Flashcards

Exam 4 Flashcards

1
Q

Any weight or vehicle component supported by the springs is classed as ______ weight.

A

Sprung

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2
Q

The two major steering gears used in vehicles today are

A

Steering box

Rack and pinion

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3
Q

Some MacPherson strut vehicles have caster adjustment on the _____ control arm.

A

Lower

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4
Q

___ rod ends provide orbital movement in the steering linkage.

A

Tie rod

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5
Q

Uneven SAI can cause _____ pull.

A

Brake

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6
Q

The _____ and ____ arm suspension has been popular for many years. (SLA)

A

Short

Long

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7
Q

The camber is zero, SAI and included angle are the ____.

A

Same

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8
Q

Unequal camber results in a pull to the side that has the ____ positive setting.

A

Positive

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9
Q

The ___ double flare and ___ flare are the only two types of flares allowed for brake fittings.

A

SAE

ISO`

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10
Q

Any weight or vehicle component not supported by the springs is called _______ weight.

A

Unsprung

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11
Q

Dual-diaphragm boosters are also called ______ boosters.

A

Tandem

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12
Q

Front ___ is the last adjustment angle to be adjusted the same way on most vehicles.

A

Toe

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13
Q

_______ velocity (CV) joints are located at either end of the axle shafts in FWD vehicles.

A

Constant Velocity (CV)

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14
Q

Excessive positive caster can cause three detrimental conditions
1
2
3

A

Road shock
Heavy steering
Shimmy

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15
Q

Steering axis inclination (SAI) is a _______ control angle.

A

directional

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16
Q

Most braking is done by the ________ shoe.

A

Secondary

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17
Q

_____ angle is the angle formed by the thrust line and geometric centre line.

A

Thrust

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18
Q

On a shock absorber most control takes place during ______, controlling spring bounce.

A

rebound

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19
Q

If the toe change is not equal, the vehicle will ____ steer or pull to one side or the other when going over bumps in the road.

A

Bump

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20
Q

The majority of pads in use today are of the ____-metallic type.

A

Semi

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21
Q

Air and _____ are common brake fluid contaminants.

A

Water

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22
Q

Dual piston units may be split from to rear, is in common ___ and ___ vehicles, or diagonally split, as commonly found on ___ vehicles.

A

RWD
4WD
FWD

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23
Q

Uneven caster will pull to the ____ positive side.

A

Least

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24
Q

The ______ protect the rack assembly from contamination.

A

Bellows

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25
Q

If a vehicle has __________ steering linkage, it will have a pitman arm joining the steering gear to the steering linkage and an idler arm supporting the linkage on the right hand side.

A

Parallelogram

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26
Q

Pressures in the accumulators can be as high as ____ PSI

A

2500

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27
Q

___________ systems are most common to full-sized rear wheel drive passenger vehicles and light trucks. Two primary members, known as the pitman arm and idler arm, support the center link.

A

Parallelogram

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28
Q

When one of the front wheels is behind or further back compared to the other front wheel it is known as ______

A

Setback

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29
Q

______ roller bearings were standard for front wheel bearings on rear wheel drive vehicles for many years.

A

Tapered roller bearings

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30
Q

______ brake boosters increase the hydraulic brake pressure applied on the master cylinder piston.

A

Power brake boosters

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31
Q

Thrust line is determined by the total ___ of the rear wheels.

A

Toe

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32
Q

The majority of RWD engines are _________ mounted.

A

Longitudinally

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33
Q

The endplay of adjustable tapered roller bearings should be maintained between 0.0___mm and 0.___mm.

A
  1. 0254mm

0. 127mm

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34
Q

Steel lines are sized by ______ diameter.

A

Outside

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35
Q

Brake linings need to be tough. During hard braking, the shoe may be pressed against the drum with a force of ____ LBS. They must be able to withstand heats up to ___ degrees.

A

1000 LBS

500 Degrees

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36
Q

______ ball joints act as a stabilizing pivot point for the steering and suspension action. These joints usually don’t carry any significant vehicle load.

A

Guiding

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37
Q

There are ___ sylenoid valves per channel: an isolation valve and a pressure reduction or dump valve. The solenoid valves control pressure hold, pressure decrease and pressure increase. These valves are controlled by the ECU and operate at frequencies of up to __ cycles per second.

A

two

15

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38
Q

A _____ alignment is required after an engine cradle is replaced.

A

Wheel

39
Q

Excessive toe-in produces saw tooth tire wear with the points of the saw teeth pointing __. Excessive toe-out will case the points to point towards the ______ of the tire.

A

In

Outside

40
Q

Disk brakes resist _____.

A

Fade

41
Q

The output from the electrical control unit that controls the valves in the hydraulic control unit for one or more wheels is called the ______ channel.

A

Control

42
Q

____-servo means that the servo action occurs in both forward and reverse

A

Dual-servo

43
Q

Pistons my be made of _______ resin or steel.

A

Phenolic

44
Q

Typical torque values for passenger vehicles are between __ ft-lb and ___ ft-lb.

A

90 ft-lb

110 ft-lb

45
Q

________ bars (or sway bars) reduce body roll during vehicle cornering.

A

Stabilizer

46
Q

FWD rear suspensions can be simplified because all the power train components are in the front. The rear suspension only controls braking torque, ____ roll and lateral forces.

A

Body

47
Q

Tread depth is usually measured in __nds of an inch.

A

32nds

48
Q

The ________ differential valve, or safety switch, is a device installed in the brake system to warn the driver of failure of either of the two brake hydraulic systems.

A

Pressure

49
Q

When the toe settings are out of tolerance by /”, it is like dragging the tire sideways 28 feet for each mile driven.

A

1/8”

50
Q

Most front wheel drive vehicles are equipped with factory-_____ ball bearing assemblies.

A

Sealed

51
Q

Negative scrub radius projects the load towards the ______ of the tire.

A

Outside

52
Q

The three types of wheel alignment angles that are tire wearing angles are:
1
2
3

A

Camber
Turning radius
Toe

53
Q

___-servo means that the servo action only occurs when going forward.

A

Uni-servo

54
Q

On ___ suspension systems, SAI is built-in, non-adjustable angle that is incorporated into the steering knuckle.

A

SLA

55
Q

Sealed bearing should be inspected for looseness, manufacturers specify a maximum end play of 0.__ mm

A

0.13

56
Q

Rebound =

A

Extension

57
Q

The integral ___ system consists of a complex single component. The brake booster, master cylinder, hydraulic pump, hydraulic control unit and _______ may all be part of a single assembly.

A

ABS

Accumulator

58
Q

_____ springs are used to pull the shoes back to their rest position when the brake pedal is released.

A

Return springs

59
Q

Jounce =

A

Compression

60
Q

Transverse engines commonly use _______.

A

Transaxles

61
Q

Negative scrub radius creates more steering stability than ______ scrub radius.

A

Positive

62
Q

Tire replacement is recommended when tread depth reaches . mm

A

1.6mm

63
Q

_____ radius is the distance between the projected steering axis and the centre of the tire contact area, measured at the road surface.

A

Scrub

64
Q

The camber difference from side to side must not exceed / degree

A

1/2

65
Q

______ steer means that the vehicle tends to pull in the direction of the most recent turn.

A

Memory steer

66
Q

___ offset is the difference between the wheel mounting flange and the centerline of the wheel and tire assembly.

A

Rim offset

67
Q

The steering _______ is the system of pivots and connecting parts that is placed between the steering gear and steering knuckle.

A

Linkage

68
Q

______ boosters are completely different than vacuum boosters. They use hydraulic pressure generated from a mechanical or electric pump and apply it to the master cylinder.

A

Hydraulic boosters

69
Q

Two advantages of disk brakes are that they ____ well and are lightweight.

A

Cool

70
Q

The majority of FWD engines are _______-mounted.

A

Transverse

71
Q

The difference in turning angles on most vehicles is _ degrees and may be as much as _ degrees on some models.

A

2

4

72
Q

An ABS system may have one, three or four control channels. ____-channel systems are the most common.

A

Three-channel

73
Q

During a panic stop the front of the vehicles dips and the rear rises. The ________ valve located in the fluid line to the rear brakes will reduce the pressure to the rear brakes and attempt to balance the system.

A

Proportioning Valv

74
Q

The two spring types used for RWD rear suspension systems are ____ springs and ____ springs.

A

Leaf

Coil

75
Q

The combined camber and SAI reading is called the _____ angle.

A

Included

76
Q

On vehicles with SLA suspension styles, caster can often by adjusted by moving the _____ ball joint forward or rearward.

A

Upper

77
Q

Fluid lines must be able to withstand pressures as muc as ____PSI

A

5000

78
Q

On rear suspension coil springs cannot provide fore and aft, lateral and torque control of the axle, so _______ arms and track bars are used.

A

Control

79
Q

_____ piston master cylinders units operate all 4 brakes on one piston.

A

Single

80
Q

On a disk and drum combination, a _______ valve may be required.

A

Metering

81
Q

The _________ strut suspension is popular for its compact, light structure in a great number of north American applications. The spring and shock absorber components are combined.

A

McPherson

82
Q

At the heart of the brake system, the ______ cylinder transfers mechanical energy into hydraulic energy.

A

Master

83
Q

The ____-___ system uses a connecting link (or drag link) that connects the pitman arm to the left, front steering knuckle.

A

Fore-aft

84
Q

The two wheel alignment angles that are used to add steering stability are
1
2

A

Caster

Steering Axis inclination

85
Q

If the vacuum booster is damaged in anyway ______ it. This unit has to withstand internal operating pressures of ____ PSI.

A

Replace

2500 PSI

86
Q

Excessive negative caster can cause ______ steering at low speeds and instability at high speeds, combined with _____ and weave.

A

Wander

87
Q

Wheel speed sensors are permanent magnet generators that produce an _______ current.

A

Alternating current

88
Q

RWD drive axles are usually hollow; a one or ___-piece design; and can be made of steel, aluminum or _____ metal.

A

Two

Fibred

89
Q

Caster spread, the caster difference from side to side, must not exceed / degree

A

1/2

90
Q

The _________ valve combines the functions of the metering and proportioning valves.

A

Combination

91
Q

Brake ____ are used to support the brake linings, giving them a rigid foundation.

A

Shoes

92
Q

____-carrying ball joints are designed to carry the weight of the vehicle through the joint. The two types of load-carrying ball joints are ________ loaded and _____ loaded.

A

Load-carrying
Compression
Tension

93
Q

______ arms are fitted to the sector shaft of the steering gear on a tapered spline.

A

Pitman

Autobody Technician Year 4 (4 decks)

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