Suspension and steering study guide

A

Tech A says stabilizer bars rarely give problems. Tech B says the most likely stabilizer var fault is a broken stabilizer bar. Who is correct?

A

A green valve stem cap on tires on recent model-year vehicles means that the tires are: A. Filled with nitrogen B. Filled with hydrogen C. Filled with carbon dioxide D. Filled with helium

D

A pre-alignment inspection is performed to ensure the vehicle is an appropriate candidate for an alignment. This inspection checks that: A. There are no missing suspension or steering parts B. The suspension and steering parts are all serviceable and functioning correctly. C. The car has no faulty or worn out parts prior to beginning the wheel alignment process. D. All the answers listed.

B

All of the following are true about 'directional' tiers; except: A. Tires with directional tread patterns should always rotate in the direction indicated only. B. Directional tires should be rotated so they turn the opposite direction as before. C. Directional tires are often rotated from front to rear or vice-versa D. An arrow on the directional tire sidewall usually indicates the direction that the tire rotates.

B

All of the following are types of wheel alignments except: A. Four wheel. B. Rear end two wheel. C. Front end two wheel. D. Thrust angle

C

All of the following problems or conditions may be caused by improper wheel balance, except: A. uneven tire wear B. Uncomfortable vibration. C. Premature wear of brake pads. D. Premature wear of suspension components.

D

All of the following statements about wheel balancing are true except: A. Tire/wheel imbalance can cause vehicle vibration and a rough, uncomfortable ride. B. Tire/wheel imbalance can cause excessive and uneven tire wear. C. Tire/wheel imbalance can cause excessive steering and suspension system part wear. D. Tire/wheel imbalance can cause poor fuel economy.

C

Camber is the: A. angle the steering arms make with the steering axis projected toward the center of the tear axle. B. Axle between the upper and lower pivots on the control arm. C. Inward and outward (side to side) vertical tilt of the wheel. D. Axis around which the wheel assembly swivels as it turns.

A

Damage to the cradle of a vehicle can force the wheels out of alignment, possibly changing: A. All of the answers listed B. Camber C. Caster D. Toe

D

During cornering, centrifugal force acts on a vehicle to produce: A. Oversteer B. Slip angle C. Understeer D. Side force

C

Earlier (older model) vehicles: A. Often used wide tread, small diameter tires. B. Often used wide tread, large diameter tires. C. Often used narrow tread, large diameter tires. D. None of the answers listed.

D

If the thrust angle is way out of specifications, what animals will your car look like as it drives down the road? A. Snake B. Horse C. Cat D. Crab

Both

Most vehicle lug nuts and studs are right-hand threaded, which means they tighten when turned clockwise. However, some vehicle manufacturers use left-hand studs and lug nuts on the passenger side wheels. Tech A says this is because some manufacturers believe left-hand lug nuts are less likely to loosen up when used to the right (passenger) side of the vehicle. Tech B says this is important to remember so lug nuts are not sheared off when trying to remove them. Who is correct?

D

Prior to performing the front toe adjustment, you should center the steering wheel and: A. Remove the key to hold it from turning. B. Turn the key to the accessory position. C. Put the vehicle in park. D. Lock it in place with a steering wheel holder.

B

Rear wheel thrust angle: A. Refers to the relationship between the rear wheels and the front wheels B. Refers to a relationship between the rear wheels and an imaginary centerline down the center of the vehicle C. Refers to the rear wheels' traction on slippery surfaces. D. Applies only to four wheel drive and all wheel drive vehicles.

A

Rust can often cause the wheel to become stuck to the axle flange or hub due to the snug fit between the wheel and hub (or axle flange). When this happens, tech A says to first notify your supervisor and seek assistance. Tech B says to first use an oxyacetylene torch to loosen the rusts grip on the parts. Who is correct?

B

Some tires may be inflated with nitrogen rather than plain air. All of the following are true, except: A. Nitrogen filled tires usually have green valve stem caps. B. Plain compressed air consists of approximately 50% oxygen and 50% nitrogen. C. Oxygen, due to its reactivity, is harmful to rubber and other tire materials. D. Oxygen reacts negatively with the tire liner and creates particles of rubber that can clog valve stems.

A

Tech A says SAI stands for steering axis inclination. Tech B says that steering axis inclination is adjustable. Who is correct?

B

Tech A says a loose tie rod end is OK when aligning a car. Tech B says that re-calibrating a steering angle sensor is needed on most recent vehicles. who is correct.

B

Tech A says collision damage may have moved/bent the cradle mounting points. Tech B says a collision damaged vehicle may have to go to a frame shop to straighten the body. Who is correct?

A

Tech A says on a vehicle with independent rear suspension it must be adjusted during a wheel alignment along with the front suspension. Tech B says only the rear suspension needs to be adjusted. Who is correct?

Both

Tech A says pull is felt when the driver feels the steering wheel wanting to go to one side. Tech B says drift is when the driver is holding the steering wheel stead and straight but the vehicle slowly begins to move either right or left. Who is correct?

Neither

Tech A says run-flat tires may be driven indefinitely at zero inflation pressure. Tech B says run-flat tires generally have sidewall reinforcements. Who is correct?

Both

Tech A says running camber is the camber angle while the vehicle is being driven. Tech B says changes to this angle may occur due to the vehicle moving over road irregularities. Who is correct?

B

Tech A says steering and suspension repairs are always simple and easy. Tech B says steering suspension repairs demand extreme care and attention to detail. Who is correct?

B

Tech A says steering axis inclination is referred to as S/inc. Tech B says steering axis inclination is the angle formed by an imaginary line running through the upper and lower steering pivots relative to a plumb line (the vertical line that is made when a weight is hung from a string). Who is correct?

Both

Tech A says steering return is the condition when the steering wheel does not return to straight ahead after a turn and is also known as memory steer. Tech B says steering return can be caused by binding at pivot points or can be the result of insufficient positive caster. Who is correct?

Both

Tech A says that a test-drive should be made prior to the pre-alignment inspection. Tech B says understanding the customer's concern is one of the first steps in diagnosing alignment related issues. Who is correct?

A

Tech A says that all lug nuts must be torqued to specifications. Tech B says that lug nuts can be tightened in any random sequence. Who is correct?

A

Tech A says that camber used to be a heavy tire-wearing angle when tires were the bias-ply type and had stiff sidewalls. Tech B says radial tires can tolerate huge amounts of improper camber without wearing. Who is correct?

Both

Tech A says that observing tire wear patterns can assist in identifying problems in steering system. Tech B says that observing tire wear patterns can also assist in identifying problems in the suspension system. Who is correct?

Both

Tech A says that shims are sometimes used to adjust camber. Tech B says that shims can sometimes be used to adjust caster. Who is correct?

B

Tech A says that the tread of a tier is made mostly of natural rubber. Tech B says that 98% of the tiers now sold are of the radial design. Who is correct?

Both

Tech A says that tire inflation needs to be checked when the tire is cold. Tech B says the tire pressure can be checked as long as they have been driven less than 1 mile in the last 3 hours. Who is correct?

Neither

Tech A says that tires on most passenger vehicles are solid rubber tires. Tech B says that tires on forklifts are always pneumatic (air-inflated) tires. Who is correct?

A

Tech A says that wheel concentricity problems may stimulate a tire that is out of balance. Tech B says that tier concentricity can be repaired by heating up the tire and stretching it with a hydraulic press. Who is correct?

B

Tech A says the coil springs can only be mounted on the lower control arm. Tech B says soil springs store large amounts of energy. Who is correct?

A

Tech A says the final check to perform after a wheel alignment is to test drive the vehicle to confirm you have fixed the problem or completed the customer's request. Tech B says the alignment wheel target adapters sync up with the brake rotor hub; there is no need to compensate for any wheel runout. Who is correct?

A

Tech A says tire with a speed rating of Z has the highest possible speed rating. Tech B says that tires with Z-speed ratings allow drivers to legally exceed posted maximum speed limits. Who is correct?

B

Tech A says torque-steer may is caused by low tire pressure. Tech B says steering return concerns may be caused by binding components. Who is correct?

B

Tech A says wheel alignment means the wheels are positioned at certain locations. Tech B says wheel alignment means the wheels are positioned at certain angles. Who is correct?

Both

Tech A says when disassembling a macPherson strut unit the coil spring may be under compression. Tech B says when this type of strut must be disassembled a strut/spring compressor must be used to contain the spring until its tension is slowly released. Who is correct?

Both

Tech A says you can replace the bushings in some control arms. Tech B says on some vehicles, you have to replace the entire control arm to repair control arm bushings. Who is correct?

A

Tech A says you need to replace shocks or struts in pair. Tech B says that the old shock bushings should be reused. Who is correct?

C

The UTQG tire grading system, grades tires on all the following except: A. Temperature grade B. Tread wear grade C. Toughness grade. D. Traction grade

D

The height of the vehicle center of gravity is determined by the _____ of the center of mass above the road surface. A. width B. Length C. Depth D. height

C

The purpose for a drop center in the wheel is to allow for: A. Better heat dissipation. B. Cooler looking wheels. C. Tire mounting and dismounting. D. The exact size.

A

The tire must be an exact fit on the wheel to: A. All answers are correct B. Ensure the tire and wheel will form a perfect seal to prevent air leakage C. Prevent the tire from turning on the rim. D. Transfer all the forces between the tire and wheel without slipping or chafing.

B

Tire and wheel assemblies can be balanced in several ways and with different results. All of the following is are true except: A. Dynamic balancing is done with a rotating wheel assembly, addresses up and down as well as side to side imbalance, and is commonly performed in many shops today. B. When balancing a tire, whenever possible, reuse the wheel weights to avoid wasting the customers' money. C. Road force balancing is a state-of-the-art balancing system that takes into account weight differences in the tire and wheel assembly, and accounts for both up-and-down as well as side-to-side imbalance and also can measure vibrations from tire stiffness that can cause vibrations. D. Static balancing is done with a stationary wheel assembly, addresses only up and down movement of the wheel assembly, and is now obsolete.

B

Tire inflation is accomplished when air is pumped through a special valve in the wheel. This valve is called: A. Stem valve B. Schrader valve C. Air valve D. Intake valve

C

Tires can be balanced by the ________ method. A. Road force B. Dynamic C. All the answers listed. D. Static.

Both

When a modern passenger car tire's construction is examined, several features are obvious. Tech says these features are the cords, inner liner, and tread. Tech B says these features are the bead, plies, and sidewall. Who is correct?

D

When should coil springs be checked? A. When the engine misfires B. When the tires have cupped wear C. When there is oil on the shocks D. When there is an issue related to ride quality or ride height.

C

Which of the following four-tire rotation patterns is not commonly specified. A. Rearward cross B. Forward cross C. Round about D. X pattern

A

Which of the following is correct regarding tire inflation? A. Proper tire pressure allows a vehicle to carry weight up to its designed load limit. B. Proper tire inflation pressure allows a tire to carry up to 75% of its maximum load limit. C. Foreign/import vehicles may specify tire pressure in knots per square centimeter (KPSC). D. Tire inflation pressure is stated in ounces per square inch (OPSI).

D

Which of the following is true? A. Modern tires are built with single ply or cord under the thread. B. Tire sidewalls are a special type of tire with tread. C. Tire beads are small bumps in the tread to increase traction on slippery pavement. D. Radial tires are used on virtually all modern cars.

C

Which of the statements below is accurate? A. The acronym UTQG stands for United Tire Quality Grading. B. the acronym TPMS stands for Tire Pressure Mandatory System. C. Neither of the answers listed. D. Both of the answers listed.

D

Which of the statements below is correct? A. Neither of the answers listed B. Both answers listed. C. The acronym PCD stands for positive circle diameter. D. The acronym EMT stands for extended mobility technology.

B

Why do most wheels have holes in the wheel flange? A. Holes allow for additional fasteners if needed. B. Holes allow for air circulation and cooling. C. Holes help balance the wheel. D. Holes increase the strength of the wheel.