{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Engine Measurement

Engine Measurement - A EN 201 Agricultural Power Units...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
A EN 201 – Agricultural Power Units Measuring Engine Wear Objectives : The Student Will Be Able To: 1. Describe the importance of measuring engine wear; 2. Describe how to measure cylinder wear; 3. Describe how to measure piston ring gap; 4. Describe how to measure the crankshaft; 5. Describe how to measure the cam shaft; 6. Describe how to measure valve wear; and 7. Appraise wear measurements and make repair judgments according to wear. Required Reading For Quiz : 1. This laboratory chapter I. Introduction : Even though the internal working parts of an engine are not seen, they are the most important. These parts are so very important because of the jobs that they perform, and because of the intense work pressure that they endure. For these reasons, the internal moving parts of an engine must be made of high quality materials and they must be precise. Throughout this laboratory, the precision of these parts will be checked. Even though the parts are made of high quality materials, they are still subject to wear. II. Measuring Cylinder Wear : The cylinder wall of an internal combustion engine does not wear uniformly from top to bottom. The only area of severe wear is the part of the cylinder wall where the rings move from top to bottom. The wear is usually greater just below the top of the ring travel and decreases as the piston travels toward the bottom of its stroke. To get an accurate measurement on the cylinder, it is recommended that six different measurements be taken. Measurements should be taken in pairs - two at the upper area of ring wear, two at the middle of ring wear, and the last two at the lower end of ring wear, (Figure, 4.1). At each of these positions one measurement should be taken parallel to the crankshaft and one taken perpendicular to the crankshaft. By using this method, any out-of-roundness and/or taper can be determined.
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern