Читать книгу Farm Machinery and Equipment - Harris Pearson Smith - Страница 29

1. Define friction and discuss its advantages and disadvantages.

2. Enumerate the forms, kinds, and sources of lubricants.

3. Explain the API system of service classification of lubricants for gasoline and spark-ignition engines; name the different kinds of service and give the main features of each service.

4. Explain the API service systems for diesel engines and give the main features of each system.

5. Discuss the SAE grades of engine oils and gear lubricants. What is meant by an EP gear lubricant?

6. Explain the meaning of oil viscosity, and describe how it is measured.

7. Give a definition for grease and list the main types according to use.

8. Explain the NLGI grades of grease.

9. Discuss the various methods of applying greases to farm equipment. What is meant by high-pressure lubrication?