Deck 47: Steering Systems

Question 1

Electronic rack-and-pinion systems use an electric motor to pump the hydraulic fluid through the hoses.

Answer 1

False

Question 2

In a rack-and-pinion steering system, what protects the rack from contamination?

A)the inner tie-rod socket
B)the outer tie-rod socket
C)grommets
D)the bellows boots

Answer 2

D

Question 3

Parallelogram steering arrangements typically use a rack and pinion mechanism.

Answer 3

False

Question 4

Worn tie-rod ends can result in ______.

A)scalloped and scuffed tires
B)tire squeal on turns
C)wheel shimmy
D)all answers are correct

Question 5

Which of the following is NOT a probable cause of wheel shimmy?

A)binding steering column U-joints
B)loose wheel bearings
C)out-of-balance tires
D)loose, worn, or damaged suspension parts

Question 6

Lower steering efforts are desirable at highway speeds in order to provide improved road
feel.

Question 7

What is the primary purpose of power steering hoses?

A)to lubricate the pump
B)to relieve pressure
C)to transmit pressurized fluid power
D)None of the answers is correct.

Question 8

Some tie rod ends use a special bonded ball stud, in which no boot is used.

Question 9

The worm and roller steering components are basically the same found in the recirculating ball/ parallelogram system.

Question 10

Rack-and-pinion preload can be adjusted by setting the yoke lash.

Question 11

Rack-and-pinion steering arrangements require two tie-rod linkages.

Question 12

Tire wear patterns are good indicators of steering and suspension problems.

Question 13

You should use a pickle fork or hammer on aluminum parts.

Question 14

Since 1968, all steering columns have a collapsible feature that allows the column to fold into itself upon impact.

Question 15

Mechanical 4WS is steering angle sensitive but not sensitive to vehicle road speed.

Question 16

In a rack-and-pinion steering system, the rack is the steering input and drives the pinion in order to move the wheels.

Question 17

A sector shaft is used in most rack-and-pinion steering mechanisms.

Question 18

The worm gear and the pitman gear are components within a recirculating ball steering gearbox.

Question 19

Front-wheel suspension design greatly influences steering geometry.

Question 20

Power steering fluid pressure can be measured with a scan tool.

Question 21

Technician A says some tie-rod ends use a special bonded ball stud without a boot. Technician B says when checking tie-rod ends, any vertical movement of the tie-rod over 1/8 inch (3 mm)indicates that replacement is necessary. 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 parallelogram-type of steering linkage can be mounted ahead of the front suspension. Technician B says the parallelogram-type of steering linkage can be mounted behind the front suspension. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 23

If the center link, idler arm, or pitman arm is NOT mounted at the correct height, the toe is unstable, and a condition known as _____ occurs.

A)joggle
B)bump steer
C)torque steer
D)excessive scrub radius

Question 24

The main job of the idler arm is to support the _____.

A)left side of the center link
B)right side of the center link
C)pitman arm
D)steering column

Question 25

Which of the following is a 4WS production design?

A)mechanical
B)hydraulic
C)electro/hydraulic
D)all answers are correct

Question 26

Technician A says that worn tie-rod ends are the probable cause of a shimmy. Technician B says that a shimmy could be caused by a loose power-steering belt. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 27

Quadrasteer steering systems are being discussed. Technician A says at low speeds, the rear wheels turn in the same direction as the front wheels. Technician B says at high speeds, the rear wheels turn in the direction opposite to the front wheels. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 28

Technician A uses a torque wrench to measure bearing drag when making steering gear adjustments. Technician B uses a pull scale to determine whether the actual steering force is within specifications. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 29

Wear and looseness in a parallelogram-type steering linkage permits intermittent changes in the toe setting of the front wheels; this can lead to ________.

A)pulling to the left or right
B)increased tire wear
C)hard steering
D)All the answers are correct.

Question 30

Which of the following is NOT part of a parallelogram-type steering linkage?

A)pitman arm
B)idler arm
C)control arm
D)center link

Question 31

Technician A says an electronically controlled power steering system provides power assistance when the engine stalls. Technician B says an electronic rack eliminates the hydraulic pump and hoses. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 32

Power steering systems are being discussed. Technician A says an integral systems has the power cylinder and the control valve located inside the same housing as the steering gear. Technician B says an external piston linkage system has the power cylinder and control valve located externally, between the center link and the frame. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 33

What component connects the steering gearbox to the steering linkage?

A)idler arm
B)pitman arm
C)steering shaft
D)tie-rod

Question 34

Rack-and-pinion steering ______.

A)is lighter in weight and has fewer components than parallelogram steering
B)does not provide as much feel for the road as parallelogram steering
C)does not use tie-rods in the same fashion as parallelogram steering
D)all answers are correct

Question 35

Steering dampers are being discussed. Technician A says a light film of fluid is permissible on the body of the damper near the shaft seal. Technician B says steering dampers can be repaired and refilled. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 36

All steering systems have a ______.

A)linkage
B)steering gear
C)steering column and wheel
D)all answers are correct

Question 37

Which statement about the integral-piston power steering linkage system is true?

A)The power cylinder is integrated with the steering gear
B)The power cylinder has four hydraulic lines connected to it
C)The power cylinder is attached to the steering column
D)All the answers are correct.

Question 38

Technician A says adjusting the steering gear too tightly can cause hard steering. Technician B says adjusting the steering gear too tightly can cause poor returnability. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 39

Rack and pinion steering systems are being discussed. Technician A says they do not require inner tie-rod ends. Technician B says they require two outer tie-rod ends. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 40

Technician A says a worn or damaged idler arm can cause front-end shimmy. Technician B says a worn or damaged idler arm can cause hard steering. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 41

Power rack-and-pinion steering is being discussed. Technician A says the pinion gear functions as the power piston. Technician B says the spool valve is connected to the rack. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 42

The power steering pressure on an electronically controlled power steering system is regulated by the vehicle's computer by varying the _____ applied to the pressure control solenoid.

A)frequency
B)resistance
C)duty cycle
D)voltage

Question 43

If the center tooth on the sector gear is larger than the teeth on either side, the steering box is a _____-ratio type.

A)constant
B)variable
C)inverse
D)reverse

Question 44

Technician A repairs leaking power steering hoses by cutting out the leaking section and installing a length of double wall 3/8-inch steel tubing with hose clamps. Technician B replaces worn or damaged power steering hoses. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 45

Which of the following would NOT cause excessive play in the steering wheel?

A)worn ball joints
B)loose power steering belt
C)worn tie-rod ends
D)damaged or worn steering gear

Question 46

The part (most likely to fail)in a parallelogram-type steering system is the ______.

A)pitman arm
B)idler arm
C)center link
D)tie rods

Question 47

Breakaway plastic capsules, inserts or steel balls held in a plastic retainers, and collapsible steel mesh devices that give way under pressure allow the _____ to collapse in a collision.

A)parallelogram linkage
B)steering column
C)rack and pinion
D)steering gear

Question 48

In a hydroboost system, pressurized power steering fluid is used for both the power steering system and the ______.

A)clutch release mechanism
B)supercharger
C)radiator cooling fan motors
D)power brake booster

Question 49

An oil leak at the bellows of a rack and pinion could be caused by ______.

A)inner rack seal
B)outer rack seal
C)pinion seal
D)all answers are correct

Question 50

Technician A says most late model vehicles have a power-steering pressure sensor that can be monitored with a scan tool. Technician B says if the system does not have a power steering pressure sensor, she diagnoses the system by connecting a power-steering pressure gauge to the pump outlet. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 51

The primary sensor input used by an electronically controlled power steering system is the ______.

A)engine coolant temperature [ECT]
B)vehicle speed sensor [VSS]
C)engine RPM [CKP]
D)mass airflow [MAF]

Question 52

Which of the following is NOT part of a rack-and-pinion steering system?

A)pitman arm
B)idler arm
C)center link
D)all answers are correct

Question 53

Nearly all late model vehicles use a single _____ to drive the power steering pump and all other belt-driven components.

A)flat drive belt
B)V-belt
C)serpentine belt
D)multilink metal belt

Question 54

The only steering linkage parts used in a rack-and-pinion system are the _____.

A)pitman arm
B)tie rods
C)center link
D)idler arm

Question 55

Active steering systems are being discussed. Technician A says active steering improves vehicle stability by turning the wheels more or less sharply than commanded by the steering wheel. Technician B says the system allows for a variable steering ratio dependent on vehicle speed. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 56

Power steering hoses must be able to withstand pressures up to _____ psi.

A)500
B)1,000
C)1,500
D)2,500

Question 57

Hard steering could be caused by ______.

A)inadequately inflated tires
B)a loose power steering belt
C)restricted power-steering lines or hoses
D)all answers are correct

Question 58

Technician A says a special puller is often required to separate a tie-rod end from the steering knuckle. Technician B says a special puller is required to separate the pitman arm from the pitman shaft. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 59

The function of the balls in a recirculating ball-type steering gear is to _____.

A)multiply steering input torque
B)multiply steering output torque
C)reduce friction between the worm shaft and ball nut
D)transfer end thrust to the pitman shaft

Question 60

On a parallelogram-type steering linkage, the _____ joins the inner and outer tie-rod ends.

A)adjusting sleeve
B)drag link
C)center link
D)pitman link

Question 61

Electric power steering systems require a steering input torque sensor to determine how much electric current should be sent to the steering assist motor. This torque sensor uses a small ____________________ that is connected between the steering column and the pinion shaft.

Question 62

The ____________________ arm connects the center link to the steering gear.

Question 63

____________________ is the slight rotational oscillations of the steering wheel resulting from the interaction of the tires with the road surface.

Question 64

____________________ is the sensation the driver feels at the steering wheel from the road surface.

Question 65

Steering dampers are mostly found on vehicles with ____________________ tires.

Question 66

The ____________________ ball steering gear is used mostly on large cars and light trucks.

Question 67

A technician is checking a car for loose and erratic steering. When an assistant moves the steering wheel left and right, he notices the entire steering rack moving back and forth about one-half inch. He checks the tightness of the rack mounting bolts and finds that they are torqued to specifications. What could be the problem?

A)worn inner tie-rod end
B)worn outer tie-rod end
C)worn steering U-joint (coupler)
D)worn rack mount bushings

Question 68

The center link is often referred to as the ____________________ link.

Question 69

Hydraulic fluid for the power steering pump is stored in a(n)____________________.

Question 70

Which of the following will NOT cause wandering?

A)leaking rack pistons
B)poor wheel alignment
C)improper steering gear preload adjustment
D)a faulty power-steering pump

Question 71

In an electric steering system the _____ must be recalibrated to its zero point whenever the steering gear, steering wheel, steering column, or steering control module has been removed or replaced.

A)torque sensor
B)clockspring assembly
C)steering wheel
D)pressure control sensor

Question 72

Prior to removing the steering wheel on a vehicle equipped with a driver's side air bag, the system must be ____________________.

Question 73

On a parallelogram type steering linkage, ___________________ connect the center link to the steering knuckles.

Question 74

In a rack-and-pinion steering system, the ____________________ performs the task as the center link in a parallelogram-type steering system.

Question 75

While checking out the front end of a vehicle, the technician grabs the driver's side tire and steers the wheels manually left and right. While he does this, he notices that the center link moves up and down. What component is most likely at fault?

A)worn tie-rod ends
B)worn center link
C)worn idler arm
D)worn steering U-joint (coupler)

Question 76

A pressure ____________________ valve controls the max pressure output from the pump.

Question 77

A variable steering ratio can normally be found in _____ steering units.

Question 78

In a parallelogram steering linkage, one tie-rod end is attached to the wheel's steering arm and the other end is connected to the _____________________.

Question 79

The ____________________ arm connects to the frame at the opposite side
of the center link from the pitman arm.

Question 80

When the wheels __________, the lateral movement of the tires causes the driver to experience large, consistent, rotational oscillations at the steering wheel.