1.
The steering wheel air bag is being replaced on a vehicle with tilt wheel. All of the following precautions should be observed EXCEPT:
Correct Answer
B. Always test the air bag by bringing battery power directly to the air bag
2.
Excessive looseness is experienced in a power steering gear (non-rack and pinion type). The cause of this problem could be:
Correct Answer
B. A loose worm shaft bearing preload adjustment
Explanation
Excessive looseness in a power steering gear can be caused by a loose worm shaft bearing preload adjustment. The worm shaft bearing is responsible for maintaining the proper tension and stability of the steering gear. If the preload adjustment is loose, it can result in excessive play and looseness in the steering gear, causing difficulties in steering the vehicle. Therefore, ensuring the proper adjustment of the worm shaft bearing preload is crucial for maintaining the functionality of the power steering gear.
3.
What could cause air bubbles in the power steering fluid?
Correct Answer
D. Low fluid level
Explanation
Low fluid level in the power steering system can cause air bubbles to form in the fluid. When the fluid level is low, there may not be enough fluid to properly lubricate and cool the power steering pump. This can result in air being drawn into the system, leading to the formation of air bubbles in the fluid. These air bubbles can cause noise, reduced power steering performance, and potential damage to the power steering components. Therefore, maintaining the proper fluid level is important to prevent the occurrence of air bubbles in the power steering fluid.
4.
A customer complains of a whining noise only when turning. Tech A says the power steering pump may be faulty. Tech B says the left front wheel bearing may be worn. Who is right?
Correct Answer
A. A. Tech A
Explanation
Tech A is correct because a faulty power steering pump can cause a whining noise when turning. The power steering pump is responsible for providing hydraulic pressure to assist with steering, and if it is faulty, it may not be able to function properly when turning, resulting in a whining noise. Tech B's suggestion of a worn left front wheel bearing may also cause noise, but it is not specific to turning and may be a separate issue.
5.
During a routine steering inspection on a rack and pinion system, the tech finds that a bellows boot is cracked. The tech should:
Correct Answer
D. D. Inspect and/or replace the inner tie-rod, and replace the bellows boot
Explanation
The correct answer is D because a cracked bellows boot indicates that there may be damage to the inner tie-rod. Therefore, the tech should inspect and/or replace the inner tie-rod and also replace the bellows boot to ensure proper functioning of the rack and pinion system. Simply using a silicone sealer or ignoring the issue would not address the underlying problem and could lead to further damage or malfunction.
6.
Edges of the tread.
Correct Answer
B. False
Explanation
Over inflation causes the tire to peak. The result is a tire that rides mostly on the center part of the tread, and wearing that part more quickly.
7.
When checking air pressure, always refer to the tire sidewall, because this is the most accurate air pressure reading.
Correct Answer
B. False
Explanation
The tire sidewall provides the maximum pressure for the tire. Vehicles each have their own specific tire pressure.
8.
When a radial tire bulges on the sidewall, this means that the tire is underinflated all the time.
Correct Answer
B. False
Explanation
A bulge on the side of a tire indicates a broken belt on the inside of the tire.
9.
The _________ seat is the edge of the rim that creates a seal between the tire bead and the wheel.
Correct Answer
B. Bead
Explanation
The bead of a tire is the belt reinforced, inner edge that seals the rubber of the tire to the metal of the rim.
10.
Technician A says that a tire will increase or decrease 1 psi for each 10°F of temperature. Technician B says that if the vehicle has been driven to warm the tires, you must adjust the air pressure down to the manufacturer's recommended pressure. Who is correct?
Correct Answer
A. Tech A
Explanation
A tire's pressure will be effected 1psi by a change in 10 degrees F. Tire pressure specifications are given when the tire is cold and should only be adjusted when they are such.
11.
Tech A says that the basic steering system has four main parts: a steering column, a steering box, a steering linkage, and a steering knuckle. Tech B says the most basic steering systems have a power assist. Who is correct?
Correct Answer
C. Both Techs A and B
Explanation
Both Techs A and B are correct. Tech A is correct in stating that the basic steering system has four main parts: a steering column, a steering box, a steering linkage, and a steering knuckle. Tech B is also correct in stating that the most basic steering systems have a power assist.
12.
Tech A says that the steering column transfers the linear movement of the steering wheel to the steering knuckle. Tech B says that the steering wheel transmits the driver's steering effort from the steering wheel to the steering box. Who is correct?
Correct Answer
B. Tech B
Explanation
Tech B is correct. The steering wheel transmits the driver's steering effort from the steering wheel to the steering box. The steering column, on the other hand, connects the steering wheel to the steering mechanism and helps to transfer the rotational movement of the steering wheel to the steering box.
13.
The relationship between the steering system, the wheel positions, and the suspension system is called the:
Correct Answer
D. Steering geometry
Explanation
The term "steering geometry" refers to the relationship between the steering system, wheel positions, and the suspension system. It encompasses the angles and adjustments that determine how the wheels turn and respond to steering inputs. This includes factors such as the caster angle, camber angle, and toe angle, which all play a role in determining the vehicle's handling and stability. By understanding and adjusting the steering geometry, mechanics and drivers can optimize the performance and safety of the steering system.
14.
The steering geometry is named after:
Correct Answer
B. RudolpH Ackermann.
Explanation
The correct answer is Rudolph Ackermann. The steering geometry is named after him because he invented the Ackermann steering mechanism in 1817. This mechanism allows all four wheels of a vehicle to turn at different angles, ensuring that the inner and outer wheels follow different turning circles. This design improves the vehicle's maneuverability and reduces tire wear.
15.
There are two main types of steering systems used on vehicles today. They include:
Correct Answer
A. Rack and pinion and parallelogram.
Explanation
The correct answer is rack and pinion and parallelogram. These are the two main types of steering systems used on vehicles today. Rack and pinion steering utilizes a gear mechanism to convert the rotational motion of the steering wheel into linear motion, which then moves the wheels. Parallelogram steering, also known as recirculating ball steering, uses a series of linkages and a steering box to transmit the motion from the steering wheel to the wheels. Both systems are commonly found in different types of vehicles and have their own advantages and disadvantages.
16.
The most common type of steering system used on vehicles today is the:
Correct Answer
D. Rack and pinion.
Explanation
The most common type of steering system used on vehicles today is the rack and pinion. This system consists of a rack (a long, straight bar with teeth) and a pinion (a small gear). When the driver turns the steering wheel, the pinion gear rotates and moves the rack sideways. This movement translates into the wheels turning left or right, allowing the vehicle to change direction. The rack and pinion system is popular due to its simplicity, compactness, and efficient power transfer, making it the preferred choice for modern vehicles.
17.
The _______________ connect(s) the wheels to the suspension and steering system.
Correct Answer
C. Steering knuckle
Explanation
The steering knuckle is responsible for connecting the wheels to both the suspension and steering system. It is a crucial component that allows the wheels to turn and pivot as directed by the driver's input through the steering system. By connecting the wheels to the suspension, the steering knuckle helps to absorb shocks and maintain stability while driving. It also plays a role in maintaining proper alignment and steering control.
18.
The ______________ is a tooth gear that meshes with the rack.
Correct Answer
D. Pinion gear
Explanation
The pinion gear is a tooth gear that meshes with the rack. It is commonly used in mechanical systems to transfer rotational motion from one component to another, such as in a steering system or a differential. The pinion gear has teeth that engage with the teeth on the rack, allowing it to convert rotational motion into linear motion or vice versa. This gear is typically smaller in size compared to other gears in the system and is designed to provide high speed and torque transmission.
19.
The ______________ protect(s) the inner joints from dirt and contaminants.
Correct Answer
C. Rubber bellows
Explanation
Rubber bellows are designed to protect the inner joints from dirt and contaminants. These bellows act as a flexible cover that surrounds the joints, preventing any foreign particles from entering and causing damage. By keeping the joints clean and free from debris, the rubber bellows help to maintain the smooth operation and longevity of the inner joints.
20.
The _____________ transfer(s) movement from the steering box to the center link.
Correct Answer
B. Pitman arm
Explanation
The pitman arm transfers movement from the steering box to the center link. It is a connecting arm that is attached to the steering gear and helps to convert the rotational motion of the steering box into the linear motion needed to turn the wheels. The pitman arm is an essential component of the steering system and plays a crucial role in controlling the direction of the vehicle.
21.
The first step in removing and replacing the power steering pump is to:
Correct Answer
B. Research the proper procedure.
Explanation
The correct answer is to research the proper procedure. Before attempting to remove and replace the power steering pump, it is important to gather all the necessary information and understand the correct steps involved in the process. Researching the proper procedure ensures that the task is performed correctly and reduces the risk of causing damage to the vehicle or injury to oneself. It is crucial to have a clear understanding of the steps involved, such as disconnecting hoses and drive belts, as well as any specific tools or precautions that may be required.
22.
The __________ connects the pitman arm to the idler arm.
Correct Answer
C. Both A and B
Explanation
Both the center link and the drag link are responsible for connecting the pitman arm to the idler arm. The center link, also known as the relay rod or tie rod, connects the pitman arm to the idler arm, while the drag link connects the pitman arm to the steering arm on the steering knuckle. Both of these components play a crucial role in the steering system, allowing the driver to control the direction of the vehicle. Therefore, the correct answer is Both A and B.
23.
Tech A says that the main problems in the power steering system are play and leaks. Tech B says that the main problems in the power steering system are play and hard steering. Who is correct?
Correct Answer
B. Tech B
Explanation
Tech B is correct. The main problems in the power steering system are play and hard steering, not leaks. Leaks can be a problem in the power steering system, but they are not one of the main problems. Play refers to excessive movement or looseness in the steering system, while hard steering refers to difficulty in turning the steering wheel.
24.
The __________ is used to read codes and data from the vehicle's power train control module (PCM) when diagnosing the vehicle's computer-controlled systems.
Correct Answer
D. Scan tool
Explanation
A scan tool is used to read codes and data from the vehicle's power train control module (PCM) when diagnosing the vehicle's computer-controlled systems. It is a diagnostic tool that connects to the vehicle's onboard computer system and retrieves information about the various systems and components. By using a scan tool, technicians can identify any potential issues or malfunctions in the vehicle's computer-controlled systems and make the necessary repairs or adjustments.
25.
The _______________ is used to measure the run-out or movement on different parts of the steering system, such as play in tie rod ends.
Correct Answer
B. Dial indicator
Explanation
A dial indicator is used to measure the run-out or movement on different parts of the steering system, such as play in tie rod ends. It is a precision measuring tool that provides accurate readings of small distances or movements. By placing the dial indicator against the steering components and rotating them, any excessive play or movement can be detected and measured. This helps in identifying and correcting any issues with the steering system, ensuring proper functionality and safety.
26.
Tech A says that you can use any fluid in a power steering pump, as they are all the same. Tech B says that you must use the correct type and brand of fluid by the manufacturer. Who is correct?
Correct Answer
B. Tech B
Explanation
Tech B is correct. Power steering pumps require specific types and brands of fluid as specified by the manufacturer. Using the wrong type of fluid can cause damage to the power steering system and potentially lead to expensive repairs. It is important to follow the manufacturer's recommendations to ensure proper functioning and longevity of the power steering pump.
27.
The _____________ power steering pump also applies assist to hydraulic brakes on some vehicles.
Correct Answer
C. Hydraulic
Explanation
The correct answer is hydraulic because the question states that the power steering pump applies assist to hydraulic brakes on some vehicles. This implies that the power steering pump is hydraulic and not fully electric or electric powered.
28.
The power steering pump reservoir is:
Correct Answer
C. Both A and B
Explanation
The power steering pump reservoir can be either mounted directly to the pump or remotely mounted. This means that it can be located either on the pump itself or placed at a distance from the pump, depending on the specific design of the vehicle's power steering system. Therefore, the correct answer is both A and B.
29.
Tech A says that the rack is directly connected to the steering knuckle. Tech B says that the rack is directly connected to the tie rod assembly. Who is correct?
Correct Answer
B. Tech B
Explanation
Tech B is correct. The rack is directly connected to the tie rod assembly. The tie rod assembly is responsible for transmitting the steering input from the rack to the steering knuckle, which then controls the movement of the wheels. Tech A's statement is incorrect as the rack is not directly connected to the steering knuckle.
30.
Tech A says that the worm gear gives greater road feel. Tech B says that the rack-and-pinion gives greater road feel. Who is correct?
Correct Answer
B. Tech B
Explanation
Tech B is correct. The rack-and-pinion system is known for providing greater road feel compared to the worm gear. The rack-and-pinion system consists of a rack (a linear gear) and a pinion (a small gear) that work together to convert the rotational motion of the steering wheel into linear motion, allowing for more direct and responsive steering. On the other hand, the worm gear system uses a worm gear and a sector gear, which can result in a smoother but less direct steering feel.
31.
The ___________________ keeps constant electrical contact with the air bag as the steering wheel is turned from lock to lock.
Correct Answer
D. Clock spring
Explanation
The clock spring is responsible for maintaining continuous electrical contact with the airbag as the steering wheel is turned from lock to lock. It is a coiled wire that allows for the rotation of the steering wheel while still providing a connection for various electrical components, such as the horn, cruise control, and airbag. This ensures that these components remain functional even when the steering wheel is turned in different directions.
32.
Tech A says that to prevent injuries in an auto accident, all steering wheels/columns have a break-off steering wheel. Tech B says that to prevent injuries in an accident, all steering wheels/columns are fitted with a collapsible section. Who is correct?
Correct Answer
B. Tech B
Explanation
Tech B is correct. Collapsible steering wheels/columns are designed to absorb impact and reduce the risk of injury in an accident. The collapsible section allows the steering wheel/column to collapse or retract upon impact, minimizing the force transferred to the driver or passengers. This safety feature is commonly found in modern vehicles to enhance occupant protection during collisions. Tech A's statement about a break-off steering wheel is not accurate or supported by current automotive safety standards.
33.
The ______________ keeps the shock forces from being transmitted through the steering linkage and back to the steering wheel.
Correct Answer
D. Steering damper
Explanation
A steering damper is a device that helps to reduce the impact of shock forces on the steering system. It is designed to absorb and dissipate these forces, preventing them from being transmitted through the steering linkage and back to the steering wheel. This helps to improve steering stability and control, especially when encountering bumps or uneven surfaces. The steering damper acts as a buffer, reducing vibrations and sudden jolts that could otherwise affect the steering performance and make it harder for the driver to maintain control of the vehicle.
34.
______________ is the undesired condition produced when, upon hitting a bump, the vehicle darts to one side as the steering linkage is pushed and pulled as a result of the travel of the suspension.
Correct Answer
A. Bump steer
Explanation
Bump steer is the undesired condition produced when, upon hitting a bump, the vehicle darts to one side as the steering linkage is pushed and pulled as a result of the travel of the suspension. This means that the vehicle's steering is affected and becomes unstable when encountering bumps on the road. It can be dangerous as it can cause the vehicle to veer off course and potentially lose control.
35.
A tie rod on each side of the vehicle connects each ______________ to the center link.
Correct Answer
B. Wheel assembly
Explanation
Each tie rod on each side of the vehicle connects the wheel assembly to the center link. The tie rod is a crucial component of the steering system, and it helps to transmit the steering input from the center link to the wheel assembly, allowing for smooth and controlled steering of the vehicle. By connecting the wheel assembly to the center link, the tie rod ensures that the steering motion is translated accurately and efficiently, enabling the driver to maneuver the vehicle effectively.