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OTC - AD Steering, Suspension and Brakes > ADT 7-3 > Flashcards

ADT 7-3 Flashcards

1
Q

A “dry park” test to determine the condition of the steering components and joints should be performed with the vehicle ________.

A. On level ground on a drive-on lift
B. On turn plates that allow the front wheels to move
C. On a frame contact lift with the wheels on the ground
D. Lifted off the ground about 2 in. (5 cm)

A

A. On level ground on a drive-on lift

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2
Q

Some vehicles are equipped to signal the computer whenever the power steering pressures increase so that the idle speed can be increased to prevent stalling during turns at low speeds. What component signals the computer?

A. Pressure-relief-valve
B. Power steering pressure switch
C. Rotary valve
D. Flow control valve

A

B. Power steering pressure switch

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3
Q

High-pressure hoses have to be used on the high-pressure side of the power steering system because pressures can reach as high as ________.

A. 200 PSI
B. 750 PSI
C. 1,500 PSI
D. 2,500 PSI

A

C. 1,500 PSI

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4
Q

The Pitman shaft is also called the ________ shaft.

A. Sector
B. Input
C. Worm
D. Spline

A

A. Sector

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5
Q

The circuit to the airbag inflation module is connected from the steering column to the steering wheel through what component?

A. Slip ring and carbon brushes
B. Clockspring (coil)
C. Magnetic field sensor
D. Hall-effect switch

A

B. Clockspring (coil)

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6
Q

How are the inner tie rods attached to the rack on a center-take-off type rack-and-pinion steering gear?

A. Staked
B. Bolted
C. Riveted
D. Pinned

A

B. Bolted

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7
Q

Integral power steering gears use ________ for lubrication of the unit.

A. SAE 80W-90 gear lube
B. Chassis grease (NLGI #2)
C. Power steering fluid in the system
D. Molybdenum disulfide

A

C. Power steering fluid in the system

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8
Q

Technician A says that torque prevailing nuts can be reused unless damaged. Technician B says that a new cotter key should always be used. Which technician is correct?

A

Technician B only

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9
Q

What is the MOST likely cause of bump steer?

A. Worn outer tie rod ends
B. A worn center link
C. Worn or oil-soaked rack bushings
D. A lack of proper lubrication of all ball-and-socket joints

A

C. Worn or oil-soaked rack bushings

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10
Q

Two technicians are discussing the proper procedure for bleeding air from a power steering system. Technician A says that the front wheels of the vehicle should be lifted off the ground before bleeding. Technician B says that the steering wheel should be turned left and right with the engine off during the procedure. Which technician is correct?

A

Both Technicians A and B

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11
Q

Power steering fluid is discovered to be pink in color. Technician A says that air could be trapped in the fluid. Technician B says that engine coolant has leaked into the power steering fluid. Which technician is correct?

A

Technician A only

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12
Q

Technician A says that outer tie rod ends should be replaced in pairs, even if only one is worn. Technician B says that inner tie rod ends should be replaced in pairs, even if only one is worn. Which technician is correct?

A

Both Technicians A and B

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13
Q

The two rack-and-pinion steering gear adjustments include ________.

A. Worm bearing preload and tolerance adjustment
B. Pinion bearing preload and rack support
C. Sector shaft and stub shaft preload
D. Stub shaft endplay and sector shaft preload

A

B. Pinion bearing preload and rack support

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14
Q

Two technicians are discussing replacement of the Pitman shaft seal on an integral power steering gear. Technician A says that the Pitman arm must be removed before the old seal can be removed. Technician B says that the steering gear unit should be removed from the vehicle before the seal can be removed. Which technician is correct?

A

Technician A only

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15
Q

What causes a variable-ratio steering gear to be able to change the ratio as the steering wheel is turned?

A

Changing the length of the teeth on the Sector gear.

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16
Q

Technician A says that the ignition switch is located where the key is inserted. Technician B says that the ignition switch is controlled by the ignition lock cylinder through a lever and actuating rod. Which technician is correct?

A

Technician B only

17
Q

Which part in the steering column allows for changes in the angle between the upper and lower shafts?

A. Flexible coupling
B. Column cover
C. Universal joint
D. Collapsible section

A

C. Universal Joint

18
Q

Two technicians are discussing bump steer. Technician A says that an unlevel steering linkage can be its cause. Technician B says that if the steering wheel moves when the vehicle is bounced up and down, the steering linkage may be bent. Which technician is correct?

A

Both Technicians A and B

19
Q

The driver rotates the steering wheel one-half of one revolution (180 degrees) on a vehicle equipped with a steering gear with a 20:1 gear ratio. How many degrees will the front wheels be rotated?

A. 9 degrees
B. 0.1 degree
C. 90 degrees
D. 11.1 degrees

A

A. 9 degrees

20
Q

Recirculating steel balls are used in most conventional steering gears because they ________.

A

Reduce Friction

21
Q

A driver of a vehicle equipped with a rack-and-pinion steering gear complains that the steering wheel jerks whenever the vehicle is being driven into a curbed driveway approach at an angle. Technician A says that the rack-and-pinion gears may have too little clearance between the teeth of the gears. Technician B says that a lack of lubrication of the rack-and-pinion is most likely the cause. Which technician is correct?

A

Neither Technician A nor B

22
Q

A vehicle has an excessive amount of freeplay in the steering wheel and it is difficult to keep it traveling straight on a straight and level road. Which is the LEAST likely cause?

A. Worn tie rod ends
B. Excessive play in the ball socket assemblies
C. Worn idler arms
D. Loose Pitman arm retaining nut

A

D. Loose Pitman arm retaining nut

23
Q

A vehicle with power rack-and-pinion steering is hard to steer when cold (temporary loss of power assist when cold). The most likely cause is ________.

A. Leaking rack seals
B. A defective or worn power steering pump
C. Worn grooves in the housing by the spool valve seals
D. Use of incorrect power steering fluid

A

C. Worn grooves in the housing by the spool valve seals

24
Q

How much endplay is usually acceptable in tie rod ends?

A. Zero
B. 0.001 to 0.030 in.
C. 0.030 to 0.050 in.
D. 0.050 to 0.100 in.

A

A. Zero

25
Q

Which tool is NOT recommended to be used to separate tapered components because it can do harm?

A. Taper breaker
B. Pickle fork
C. Tie rod removal puller
D. Two hammers

A

B. Pickle fork

26
Q

Which conventional steering gear adjustment should be the first performed?

A. Worm bearing preload
B. Tolerance adjustment
C. Gear mesh preload
D. Sector shaft endplay

A

A. Worm bearing preload

27
Q

A power steering pressure test is being performed, and the pressure is higher than specifications with the engine running and the steering wheel stationary in the straight-ahead position. Technician A says that a restricted high-pressure line could be the cause. Technician B says that internal leakage inside the steering gear or rack-and-pinion unit could be the cause. Which technician is correct?

A

Technician A only

28
Q

Some high-performance vehicles have firmer steering than other similar vehicles. Technician A says that the power steering pump pulley size is larger on those with stiffer steering, which reduces the speed of the pump. Technician B says that a torsion bar inside of the rotary valve is larger in diameter. Which technician is correct?

A

Technician B only

29
Q

Electronically controlled variable-assist power steering systems vary the amount of boost by ________.

A. Varying the pump output orifice size
B. Speeding up or slowing down the power steering pump
C. Changing the flow of fluid through the steering gear
D. Bypassing some of the fluid back into the reservoir

A

A. Varying the pump output orifice size

30
Q

New tie rod ends are being installed. Technician A says to tighten the retaining nuts to specification and then loosen, if needed, to align the cotter pin hole. Technician B says to tighten farther to align the cotter key hole. Which technician is correct?

A

Technician B only

OTC - AD Steering, Suspension and Brakes (6 decks)

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