Steering and Suspension

On an integral wheel bearing hub assembly that is bolted to the steering knuckle, the maximum allowable endplay is: 0.005 inch 0.250 inch 0.125 inch 0.750 inch

0.005 inch

Technician A says most shock absorbers and struts have a 50/50 ratio. Technician B says a strut with a 70/30 ratio has more resistance to movement on the extension cycle. Who is correct? A only B only Both A and B Neither A nor B

B Only

Technician A says a bearing cage may be called a separator. Technician B says some needle roller bearings are designed to carry radial loads. Who is correct? A only B only Both A and B Neither A nor B

Both A and B

Technician A says high-pressure air from an air gun may penetrate the skin. Technician B says if air from an air gun enters the bloodstream, it may be fatal. Who is correct? A only B only Both A and B Neither A nor B

Both A and B

Technician A says incorrect wheel alignment angles will reduce tire tread life. Technician B says wheel alignment is necessary after ball joint replacement. Who is correct? A only B only Both A and B Neither A nor B

Both A and B

Rear axle tramp occurs during: Cornering at high speeds High-speed driving Deceleration Hard acceleration

Hard Acceleration

All of the following are forms of energy EXCEPT: Mechanical energy Hydro energy Chemical energy Electrical energy

Hydro Energy

When testing power steering pump pressure, the pressure gauge valve should be closed for no more than: 5 seconds 30 seconds 45 seconds 60 seconds

5 Seconds

n incorrect SAI angle on a MacPherson strut front suspension may be caused by all of these defects EXCEPT: A bent lower control arm A shifted engine cradle An upper strut tower out of position A bent stabilizer bar

A Bent Stabilizer Bar

The most likely cause of excessive body lean and sway while cornering is: A broken stabilizer link Sagged coil springs Worn strut rod bushings Worn upper control arm bushings

A Broken Stabilizer Link

A heavy parcel is placed in the trunk of a vehicle with a rear load-leveling system after the ignition switch has been turned off for 30 minutes. Technician A says the suspension module will quickly restore the rear suspension height to the normal trim height. Technician B says the suspension module will not restore the rear suspension height to the normal trim height until the engine is started. Who is correct? A Only B Only Both A and B Neither A nor B

A Only

A modified MacPerson strut rear suspension is being discussed. Technician A says the strut rod/trailing arm prevents fore-and-aft rear wheel movement. Technician B says the strut prevents lateral rear wheel movement. Who is correct?​ A only B only Both A and B Neither A nor B

A Only

MacPherson strut replacement is being discussed. Technician A says that a strut mounting bolt may be an eccentric bolt to allow for a camber adjustment on some vehicles. Technician B says that the lower rear strut hole may be elongated to allow for easier installation on difficult locations. Who is correct? A only B only Both A and B Neither A nor B

A Only

Technician A says a bent center link will affect front wheel toe. Technician B says a bent center link will affect front wheel camber. Who is correct? A only B only Both A and B Neither A nor B

A Only

Technician A says a steering damper reduces the transmission of road shock from the front wheels to the steering wheel. Technician B says the steering damper is connected from the center link to one of the tie rods. Who is correct? A only B only Both A and B Neither A nor B

A Only

Technician A says during a frontal collision, the backup power supply will deploy the driver and passenger air bags if the battery becomes disconnected. Technician B says when the vehicle is involved in a severe frontal collision, the driver and passenger air bags will not deploy if the battery cable is severed in the accident. Who is correct? A only B only Both A and B Neither A nor B

A Only

Technician A says many car manufacturers recommend checking the power steering fluid level with the fluid warmed up. Technician B says many car manufacturers recommend checking the power steering fluid level with the front wheels turned fully in one direction. Who is correct? A only B only Both A and B Neither A nor B

A Only

Technician A says that in some short-and-long arm front suspension systems, the coil springs are mounted between the lower control arm and the chassis. Technician B says that in this type of suspension system, the upper ball joints are the load-carrying ball joints. Who is correct? A only B only Both A and B Neither A nor B

A Only

The inside of both bellows boots are contaminated with power steering fluid on a rack and pinion steering gear. Technician A says if fluid is leaking past a rack seal into one boot, oil may flow through the breather tube to the opposite boot. Technician B says that there should be fluid in the bellows boot, and this is a normal condition. Who is correct? A only B only Both A and B Neither A nor B

A Only

All of these statements about heavy-duty coil springs are true EXCEPT: Larger wire diameter than regular duty coil springs 3 to 5 percent more load-carrying capacity than regular duty coil springs Shorter free length than regular duty coil springs A high aluminum content in the spring material

A high aluminum content in the spring material

All of the following statements about gas-filled shock absorbers and struts are true EXCEPT: Gas-filled shock absorbers and struts will return to its fully extended state when no compression force is applied due to the internal gas pressure. New gas-filled shock absorbers or struts are wired or strapped in the compressed position for ease of installation A gas-filled shock absorber or strut provides better continuous damping action by reducing aeration of the fluid as compared to conventional shocks or struts. A hydrogen gas charge is used in most shock absorbers and struts

A hydrogen gas charge is used in most shock absorbers and struts

A power steering pump is being tested with a pressure gauge for maximum output pressure. Which of the following statements is correct? The pressure gauge should be attached to the pump return port The steering wheel should be held in the right lock position A maximum output pressure (dead heading) test should last no longer than 5 seconds One should check output pressure with engine speed above 4000 rpm

A maximum output pressure (dead heading) test should last no longer than 5 seconds

A power steering system experiences repeated belt failures with normal power steering system operation. The most likely cause of this problem is: ​A loose power steering pump belt. ​Low fluid level in the power steering reservoir. ​A worn cam ring in the power steering pump. A misaligned power steering pump pulley.

A misaligned power steering pump pulley.

Technician A says oily rags should be stored in covered, air-tight containers. Technician B says gasoline should be stored in glass containers. Who is correct? A only B only Both A and B Neither A nor B

A only

There is a growling noise coming from the rear of a front-wheel-drive vehicle. The noise is more pronounced on left turns. What is the most likely cause? A worn right rear wheel bearing A broken stabilizer bar A worn shock absorber Improperly torqued suspension bushings

A worn right rear wheel bearing

Caster adjustments may be provided by all of these methods EXCEPT: Adjusting tie-rod length Adjusting strut rod length Upper control arm shims Upper control arm eccentrics

Adjusting Strut Rod Length

When servicing a vehicle with an air suspension system, the air suspension switch must be turned OFF: When jacking the vehicle to change a tire When lifting the vehicle for any reason When performing services to the suspension system. All of the above

All Of The Above

When applying the principles of atmospheric pressure and vacuum: Vacuum is pressure greater than atmospheric pressure A perfect vacuum is 10 in. Hg When air becomes colder, it expands and becomes lighter Atmospheric pressure at sea level is 14.7 psi

Atmospheric pressure at sea level is 14.7 psi

Technician A says a variation of 4 degrees between the right and left SAI angles is satisfactory. Technician B says the average SAI angle on a MacPherson strut front suspension is 12 degrees to 18 degrees. Who is correct? A only B only Both A and B Neither A nor B

B Only

Technician A says during a turn, both front wheels turn at the same angle. Technician B says an improper turning angle may cause tire squeal when cornering. Who is correct? A only B only Both A and B Neither A nor B

B Only

Technician A says in a torsion bar front suspension, the front end of the torsion bar is always attached to the upper control arm. Technician B says in a torsion bar front suspension, a torsion bar adjustment mechanism is mounted where the rear end of the torsion bar is attached to the chassis. Who is correct? A only B only Both A and B Neither A nor B

B Only

Technician A says rear axle sideset does not affect steering. Technician B says if rear axle sideset occurs, the rear axle is moved laterally inward or outward. Who is correct? A only B only Both A and B Neither A nor B

B Only

Technician A says single-row round roller ball bearings can withstand high thrust loads. Technician B says a tapered roller bearing can withstand high angular bearing loads. Who is correct? A only B only Both A and B Neither A nor B

B Only

Technician A says that a problem with the vehicle ride height does not affect a vehicle's alignment. Technician B says that incorrect rear ride height could be corrected by installing new springs. Who is correct? A only B only Both A and B Neither A nor B

B Only

Technician A says that vehicle ride height could be affected by worn shock absorbers. Technician B says that vehicle ride height could be affected by tire pressure or incorrect tire size. Who is correct? A only B only Both A and B Neither A nor B

B Only

The front wheel bearings are being replaced on a front-wheel-drive vehicle with the wheel bearings pressed into the steering knuckle. Technician A says the vehicle should be driven a short distance in the shop before the front hub nuts are torqued to specifications. Technician B says the hub nut torque supplies the correct wheel bearing adjustment. Who is correct? A only B only Both A and B Neither A nor B

B Only

echnician A says a tire pressure check is not required before a wheel alignment. Technician B says a front wheel bearing play should be checked before a wheel alignment. Who is correct? A only B only Both A and B Neither A nor B

B Only

A vehicle with an independent rear suspension system may have a: MacPherson strut rear suspension Multilink design rear suspension Both A and B Neither A nor B

Both A and B

Personal protection is being discussed. Technician A says safety glasses should offer some type of side protection. Technician B says rubber gloves should be worn when handling caustic chemicals. Who is correct? A only B only Both A and B Neither A nor B

Both A and B

Power rack and pinion steering gear operation are being discussed. Technician A says the position of the rotary valve inside the spool valve directs the fluid to the appropriate side of the rack piston. Technician B says during a right turn, fluid is directed to the right side of the rack piston and the rack is moved to the left. Who is correct? A only B only Both A and B Neither A nor B

Both A and B

Technician A says a clock spring electrical connector contains a conductive ribbon/wires. Technician B says the clock spring electrical connector must be centered when it is mounted in the steering column. Who is correct? A only B only Both A and B Neither A nor B

Both A and B

Technician A says if the front wheels have a toe-out condition, the distance between the front edges of the tires is greater than the distance between the rear edges of the tires. Technician B says many front-wheel drive cars have a slight toe-out setting because driving forces tend to move the front wheels to a toe-in position. Who is correct? A only B only Both A and B Neither A nor B

Both A and B

Technician A says load-leveling rear shock absorbers use a vent solenoid to release air from the shock absorbers and lower the rear suspension height. Technician B says an onboard compressor forces air into the rear load-leveling shock absorbers to raise the rear suspension height. Who is correct? A only B only Both A and B Neither A nor B

Both A and B

Technician A says shock absorbers control spring action. Technician B says harsh riding may be caused by worn-out shock absorbers. Who is correct? A only B only Both A and B Neither A nor B

Both A and B

Technician A says some automatic air suspension systems have rotary height sensors. Technician B says rotary height sensors contain a Hall Effect element. Who is correct? A only B only Both A and B Neither A nor B

Both A and B

Technician A says steering effort imbalance on a power rack and pinion steering gear may be caused by worn rings on the rotary valve. Technician B says when turning the steering wheel to the right or left, low power steering assist may be caused by worn rings on the rotary valve. Who is correct? A only B only Both A and B Neither A nor B

Both A and B

Technician A says that some vehicles are equipped with aluminum control arms to reduce unsprung weight. Technician B says that some vehicles are equipped with aluminum steering knuckles to reduce unsprung weight. Who is correct? A only B only Both A and B Neither A nor B

Both A and B

Technician A says the SAI line is tilted inward in relation to the true vertical tire centerline viewed from the front. Technician B says on a short-and-long arm front suspension, the SAI line is an imaginary line running through the centers of the upper and lower ball joints viewed from the front. Who is correct? A only B only Both A and B Neither A nor B

Both A and B

Technician A says wheel alignment angles are designed to provide improved ride qualities. Technician B says wheel alignment angles are designed to provide minimum tire tread wear and predictable directional control. Who is correct? A only B only Both A and B Neither A nor B

Both A and B

Technician A says when measuring vertical ball joint wear, pry upward with a steel bar under the front tire and observe the dial indicator reading. Technician B says when measuring lateral ball joint wear, grasp the tire at the top and bottom and try to force the tire inward and outward and observe the dial indicator reading. Who is correct? A only B only Both A and B Neither A nor B

Both A and B

Technician A says when performing a shock absorber manual test, the shock absorber's resistance to movement may be greater on the rebound/extension stroke compared with the jounce/compression stroke. Technician B says if the shock absorber's resistance to movement is jerky and erratic, shock absorber replacement is necessary. Who is correct? A only B only Both A and B Neither A nor B

Both A and B

The main function of a shock absorber or strut is to: Prevent wheel shimmy Reduce lateral wheel movement Prevent fore-and-aft wheel movement Control spring action

Control Spring Action

Vehicle tires provide all of the following functions EXCEPT: Provide a comfortable ride Supply adequate traction on various road surfaces Control spring oscillations Absorb high stresses when cornering, accelerating, and braking

Control Spring Oscillations

The purpose of the upper and lower control arms in a short-and-long-arm front suspension system is to: Control vertical movement of the wheel and tire. Provide a mounting surface for the wheel bearings and hubs Reduce body sway when the front wheel strikes a road irregularity None of the above

Control vertical movement of the wheel and tire

Independent rear suspensions have all of these advantages EXCEPT: Improved traction Better ride quality Decreased directional stability Improved tire tread life

Decreased Directional Stability

A hard fault code indicates a fault that occurs and then disappears. True/False

False

A parallelogram steering linkage is used with rack and pinion steering gears. True/False

False

A press-on type power steering pump pulley may be installed by tapping on the pulley with a soft hammer. True/False

False

Positive caster occurs when the caster line through the centers of the lower ball joint and upper strut mount is tilted forward in relation to the true vertical centerline of the tire and wheel viewed from the side. True/False

False

When measuring ball joint wear on a short-and-long arm front suspension system with the coil springs between the lower control arms and the chassis, a floor jack should be placed under the frame to lift the suspension. True/False

False

​Negative camber is present when the camber line is tilted outward in relation to the true vertical centerline of the tire and wheel. True/False

False

In an electronic air suspension system, the control module operates all of these components EXCEPT: Air spring valves Compressor Height sensors Air vent valve

Height Sensors

​All of these statements about a rear load-leveling suspension system are true EXCEPT: If a door is open, the control module completes the lower suspension height commands. ​The rear suspension has one, non-serviceable suspension height sensor. ​The On/Off switch is mounted in the vehicle trunk. The control module operates the compressor relay.

If a door is open, the control module completes the lower suspension height commands.

All of the following are advantages of a four-wheel alignment EXCEPT: Improved fuel mileage Increase emissions Improved vehicle handling Longer tire life

Increase Emissions

All of these statements about negative caster are true EXCEPT: It reduces steering effort It decreases steering wheel return force It decreases directional stability It causes harsh ride quality

It causes harsh ride quality

When working with gases and liquids: Temperature has no affect on gas pressure Pressure is applied un-evenly within a sealed hydraulic system Gases are not compressible Liquids are not compressible

Liquids are not compressible

All of these statements about improper caster are true EXCEPT: May cause pull while braking May cause feathered tire tread wear May cause front wheel shimmy May cause excessive steering effort

May cause feathered tire tread wear

Steering wheel removal is being discussed. Technician A says to loosen the steering wheel retaining nut, and pull on the steering wheel with both hands. Technician B says to tap on the top of the steering shaft with a soft hammer. Who is correct? A only B only Both A and B Neither A nor B

Neither A nor B

Technician A says that most front-wheel-drive cars have a frame that is separate from the body. Technician B says that most full size SUVs and trucks have a unitized body that combines the frame and body into one unit. Who is correct? A only B only Both A and B Neither A nor B

Neither A nor B

The adjustment link in a multilink rear suspension: Reduces fore-and-aft rear wheel movement Absorbs engine torque transmitted through the drive shaft Provides a rear wheel caster adjustment Provides a rear wheel toe adjustment

Provides a rear wheel toe adjustment

Worn outer tie-rod ends may cause all of these problems EXCEPT: Front wheel shimmy Excessive steering wheel free play Rapid steering wheel return rate Improper front wheel toe

Rapid steering wheel return rate

Which of these alignment angles assists in the return of the steering wheel to the straight-ahead position? SAI Camber Positive toe Negative toe

SAI

The magneto-rheological fluid used in some shock absorbers and struts contains: Small, suspended metal particles A dye for leak detection purposes A viscous coupling additive Pour point depressors

Small, Suspended Metal Particles

When applying the principles of wheel balance: Improper dynamic wheel balance causes even wear on one side of the tire tread Static imbalance causes a tire wobble Static imbalance causes a tire hop or tramp Proper dynamic wheel balance occurs when weight is distributed equally around the tire and wheel circumference

Static imbalance causes a tire hop or tramp

When force is applied to an object, all of these conditions related to the object indicate that work has been accomplished EXCEPT: Lifted Slid Redirected Stationary

Stationary

​During normal strut operation: ​When the wheel moves upward the strut piston also moves upward ​The strut prevents wheel shimmy The strut prevents excessive wheel oscillations Downward wheel movement is called wheel jounce

The strut prevents excessive wheel oscillations

All of these statements about lip seals are true EXCEPT: They keep lubricant in the bearing They keep dirt out of the bearing They may have a spring-loaded lip They can be installed in any direction

They can be installed in any direction

All of these statements about a live-axle leaf-spring rear suspension are true EXCEPT: ​The differential torque in a live-axle rear suspension is applied to the springs. ​While decelerating and braking, the front of the differential twists downward. This type of rear suspension has a small amount of unsprung weight. ​During acceleration the front of the differential twists upward.

This type of rear suspension has a small amount of unsprung weight

A bearings may overheat if the wheel bearing-adjusting nut is not adjusted properly to provide the correct bearing preload. True/False

True

A loose power steering belt may cause belt squealing when cornering. True/False

True

A short-and-long-arm (SLA) front suspension system has a lower control arm that is longer than the upper control arm. True/False

True

An incorrect SAI angle may be caused by a strut tower that is out of position. True/False

True

CAN is currently the standard communication protocol. True/False

True

Carbon monoxide in the shop air may cause headaches and nausea. True/False

True

Class A, B, and C fires may be extinguished using a multipurpose dry chemical fire extinguisher. True/False

True

Collapsible steering columns may have injected plastic between the upper and lower parts of the outer column jacket. True/False

True

Computer-controlled suspension systems reduce body sway during fast acceleration. True/False

True

During a right turn, the spool valve movement inside the rotary valve directs power steering fluid to the left side of the rack piston. True/False

True

Excessive bearing load may cause premature bearing failure. True/False

True

Gas-filled shock absorbers should extend when disconnected. True/False

True

Improper ride height affects other suspension alignment angles. True/False

True

In some front suspension systems, torsion bars perform the same functions as coil springs. True/False

True

Positive camber is the outward tilt of the camber line in relation to the true vertical centerline of the tire and wheel viewed from the front. True/False

True

Scrub radius is the distance between the SAI line and the true vertical centerline of the tire and wheel at the road surface. True/False

True

Shock absorbers control spring action. True/False

True

Struts perform the same function as shock absorbers; however, struts also support the vehicle and can be an integral part of the steering system. True/False

True

The ball joint nut should not be backed off to install the cotter pin though the castle nut. True/False

True

The thrust line is an imaginary line positioned at a 90 degree angle to the rear wheel centerline (direction) and projected forward. True/False

True

​Setback occurs when one wheel is driven rearward in relation to the opposite wheel. True/False

True

To deflate an air spring prior to removal of the spring: Energize the vent solenoid in the air compressor Turn the air spring solenoid valve to the second stage Disconnect the air line from the air spring Turn the air spring solenoid valve to the first stage

Turn the air spring solenoid valve to the first stage

Types of ball joint mounting in the lower control arm include all of these EXCEPT: Welded Threaded Riveted Press-fit

Welded

​All these statements about parallelogram steering linkages are true EXCEPT: ​Loose steering linkages may cause excessive tire tread wear. ​Loose steering linkage causes excessive steering wheel free play. The pitman arm helps maintain the proper center link and tie-rod height. ​Tie-rod sleeves have the same directional threads (Right hand) on both ends of the sleeve.

​Tie-rod sleeves have the same directional threads (Right hand) on both ends of the sleeve.