Heavy Duty Truck Systems: Trivia Quiz

The given answer is true because the statement mentions that there is a list of over 20 different items on the driver post-trip inspection sheet, which includes various components of the vehicle such as brakes, air compressor, frames, fifth wheel, fuel system, steering, and suspension. This indicates that the statement is accurate and there are indeed more than 20 items listed on the inspection sheet.

Fleet maintenance standards should be higher than CVSA (Commercial Vehicle Safety Alliance) standards because fleet maintenance standards are specific to a particular fleet and take into account the unique requirements and conditions of the fleet's vehicles. CVSA standards, on the other hand, are general standards that apply to all commercial vehicles. Therefore, to ensure the highest level of safety and efficiency, fleet maintenance standards should exceed the minimum requirements set by CVSA.

When creating a fleet specific maintenance program, it is not sufficient to only follow OEM service guidelines. While these guidelines provide important recommendations, it is also necessary to consider other factors such as the specific needs and conditions of the fleet, industry standards, regulatory requirements, and the expertise of maintenance professionals. Ignoring these additional factors may result in an ineffective maintenance program that fails to address the unique requirements of the fleet. Therefore, the statement that the only guidelines needed are OEM service guidelines is false.

In Step 1 of the inspection procedure, the driver should look for fluid leaks. This is the initial step where the driver examines the vehicle for any signs of leakage, such as oil, coolant, or brake fluid. By checking for fluid leaks at the beginning of the inspection, the driver can identify any potential issues that may require immediate attention or maintenance before operating the vehicle.

CBM stands for Condition Based Maintenance. This term refers to a maintenance strategy that involves monitoring the condition of equipment or assets in order to determine when maintenance should be performed. By using various techniques such as data analysis, sensors, and predictive models, CBM aims to optimize maintenance activities and reduce costs by performing maintenance only when necessary based on the actual condition of the equipment. This approach helps to prevent unexpected failures and maximize the lifespan of assets.

Drivers must review the last inspection record in addition to conducting a pre-trip inspection. This is important to ensure that any issues or concerns identified during the previous inspection have been addressed and resolved before the driver starts their trip. Reviewing the last inspection record helps to maintain the safety and integrity of the vehicle and ensures that any necessary repairs or maintenance have been completed.

A higher SAE rating indicates that the oil has a higher viscosity and will flow more slowly. Viscosity refers to the thickness or resistance to flow of a fluid. Therefore, if the oil has a higher viscosity, it means it is thicker and will flow more slowly.

The correct answer is $25 billion. This means that each year, a total of $25 billion is spent on "Unnecessary PM".

As water is reduced in the coolant solution, its ability to dissipate heat is not increased. In fact, the opposite is true. Water has a higher heat capacity compared to other components in the coolant solution, such as antifreeze. Therefore, reducing the amount of water in the coolant solution would actually decrease its ability to dissipate heat effectively.

Heat and use can cause changes in the chemical properties of lubricants. When a lubricant is exposed to high temperatures, it can undergo chemical reactions such as oxidation or thermal degradation, which can alter its composition and performance. Additionally, the mechanical action of using lubricants can also lead to chemical changes, such as the breakdown of additives or the formation of reaction products. These chemical alterations can affect the lubricant's ability to reduce friction, prevent wear, and provide adequate lubrication, ultimately impacting its overall effectiveness.

Scrubbed or polished areas on either side of the lug might indicate rim slippage. This means that the rim has moved or shifted, causing friction between the lug and the rim. This could be due to loose lug nuts or improper installation of the wheel. When the rim slips, it can cause the lug to rub against the surrounding area, resulting in scrubbed or polished marks.

A graph based on a CBM (Condition-Based Maintenance) algorithm is created using two factors: hours of operation and incident of failure. The hours of operation provide information on the usage and workload of the system, while the incident of failure indicates the frequency and severity of malfunctions or breakdowns. By analyzing these two factors, the CBM algorithm can determine the optimal maintenance schedule and identify potential issues before they escalate into major failures, thus improving the overall reliability and performance of the system.

Automatic greasing systems dispense grease using a metering valve. A metering valve is a device that controls the flow rate of grease being dispensed. It ensures that the correct amount of grease is delivered to the desired location, preventing over-lubrication or under-lubrication. The metering valve allows for precise control and distribution of grease, ensuring optimal lubrication for the equipment or machinery.

Accurate data entry is essential because the effectiveness of AME (Assisted Medical Evaluation) relies on the person using it. If the data entered into the system is inaccurate, it can lead to incorrect evaluations and potentially harmful decisions. Therefore, ensuring accurate data entry is crucial to maximize the effectiveness of AME and to ensure the reliability of the evaluations and decisions made based on it.

The technician is ultimately responsible for verifying that the vehicle is in safe, operable conditions. They have the knowledge and expertise to inspect and diagnose any potential issues with the vehicle. Their role involves conducting regular maintenance, identifying and repairing any faults, and ensuring that all safety features are functioning properly. By performing these tasks, the technician ensures that the vehicle is safe for operation and minimizes the risk of accidents or malfunctions.

AME stands for Automated Maintenance Environment. This term refers to a system or environment that utilizes automation to perform maintenance tasks. It is designed to streamline and optimize maintenance processes by automating repetitive tasks, reducing human error, and increasing efficiency. An Automated Maintenance Environment can include various technologies such as robotics, artificial intelligence, and machine learning to automate maintenance activities in industries such as manufacturing, aviation, and transportation.

In the 2nd step of the pre-trip inspection procedure, the following should be checked in the engine compartment: coolant level, alternator belts, and power steering fluid. These components are important for the proper functioning of the vehicle and should be inspected to ensure they are in good condition before starting a trip. Checking the coolant level helps prevent overheating of the engine, inspecting the alternator belts ensures they are not worn or damaged, and checking the power steering fluid ensures smooth steering control.

The correct answer is Performance condition changes, Product quality changes, and Driver abuse. AME software is designed to adapt to these conditions in order to ensure optimal performance and functionality. Performance condition changes can include variations in temperature, humidity, or load on the system, and the software can adjust its parameters accordingly. Product quality changes may require the software to modify its algorithms or processes to accommodate different inputs or outputs. Driver abuse, such as aggressive driving or improper use of the system, can also be detected and managed by the software to maintain safety and efficiency.