Proper lubrication of pneumatic air tools is essential to ensure their longevity and reliable operation. When compressed air flows into a pneumatic tool, it can strip away residual lubricants and expose internal metal components to moisture. To prevent friction and internal corrosion, a few drops of specialized air tool oil should be added directly into the air inlet before each use, or an inline lubricator should be installed. While some operators mistakenly believe standard motor oil is acceptable, motor oil is too viscous and can gum up delicate internal vanes. Maintaining regular lubrication prevents premature tool failure and costly repairs.
Which of the following best expresses the main idea of the passage?
- AA few drops of specialized air tool oil should be added directly into the air inlet before each use.
- BStandard motor oil is too viscous and gums up delicate internal vanes in pneumatic equipment.
- Regular and proper lubrication is essential to protect pneumatic tools from damage and ensure reliable operation.Answer
- DPneumatic tools will function without wear as long as an inline lubricator is installed.
Answer
Regular and proper lubrication is essential to protect pneumatic tools from damage and ensure reliable operation.
The correct statement captures the central purpose of the passage: explaining why regular and appropriate lubrication is necessary to prevent tool failure and ensure longevity. Both the opening topic sentence and the concluding sentence reinforce this overarching message, while the intervening sentences serve as supporting evidence and specific guidelines.
Step-by-Step Solution
Key Concept
Distinguishing Main Idea from Details