- -  AGRICULTURE CORE CURRICULUM - - 

(CLF2000) Advanced Core Cluster: AGRICULTURAL MECHANICS

 (CLF2800) Title: EQUIPMENT OPERATION AND MAINTENANCE

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 (CLF2802) Topic: OIL & OIL FILTER        Time     Year(s) 
                   MAINTENANCE             1 hour   1 / 2 / 3 / 4
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         Topic Objectives: Upon completion of this lesson, the students
                            will be able to:

         Learning Outcome #:

           (Q-2) - Be able to change oil; filters for oil.

           (Q-3) - Use safe work habits while servicing, maintaining,
                     and adjusting agricultural equipment.

         Special Material and Equipment: Tractor or other engine; open
                     end wrenches for crankcase drain plug; oil filter
                     wrench, if needed; clean rags; new oil; new oil filter
                     cartridge; container to catch waste oil, operator's
                     manual

         References: Jacobs, C. O., & Harrell, W. R. (1983). AGRICULTURAL 
                       POWER AND MACHINERY. New York: McGraw-Hill.
                     Cooper, Elmer L. (1987). AGRICULTURAL MECHANICS:
                       FUNDAMENTALS AND APPLICATIONS. Albany, NY: Delmar
                       Publishers.
         Resources: Deere & Company. (1984). PREVENTIVE MAINTENANCE 
                       (Fundamentals of Machine Operation (FMO) Series). 
                       Available from: John Deere Technical Services,
                       Dept. F, John Deere Road, Moline, IL 61265

         Evaluation: Quiz by instructor.

TOPIC PRESENTATION: OIL & OIL FILTER MAINTENANCE

A. Importance of Changing Oil and Oil Filters

   1. What is the function of engine oil?

       a. It reduces wear by reducing friction.

       b. It cushions loads by absorbing shock.

       c. It seals the space between the cylinder wall and the piston rings.

       d. It cools engine parts by absorbing heat as it circulates.

       e. It cleans working surfaces.

       f. It provides rust protection by sealing engine parts from the air.

       g. It neutralizes acids which can corrode metal.

   2. Why change engine oil?

       a. Oil loses its lubricating qualities as its additives wear out
           and it picks up dirt and other abrasive material.

       b. Black crankcase oil does not indicate that an oil
           change is due.

       c. Check the operator's manual for the manufacturer's recommended
           oil change schedule to insure that the oil is changed before the
           additives wear out.

B. Changing the Oil and Oil Filter - After each 25 hours of engine use, the 
   crankcase oil should be drained while the engine is warm. Hot oil flows 
   easily and carries the contaminants with it.

   1. Start the engine, and let it run until the normal operating
       temperature is obtained.

   2. Turn off the engine and remove the drain plug from the oil pan.

   3. Clean off metal particles from the oil drain plug (some are
       magnetized).

   4. Drain the oil for at least five minutes.

   5. Before removing the oil filter, clean dirt off the filter and
       surrounding area.

   6. If the filter is self-contained, remove it with an oil filter
       wrench. If the filter has a reusable bowl, loosen filter bowl and
       remove the filter cartridge.

   7. Throw away the used filter and clean the reusable bowl and base with
       solvent.

   8. Install a new oil filter or reassemble the old filter with a new
       cartridge.

   9. Replace the drain plug in the oil pan.

  10. Fill the crankcase with the manufacturer's recommended type of new 
       oil.

  11. Start the engine, and operate it for a few minutes at low RPM.

  12. Watch the oil pressure gauge or light immediately after starting to
       verify oil pressure, and check for leaks around drain plug and filter.

  13. Turn off the engine and allow a few minutes for the oil to drain back 
       into the oil pan, then check the oil level on the dipstick.

  14. Wipe oil off the tools dispose of empty oil cans, and use sawdust
       to absorb any oil spilled on the floor. Recycle the used oil.

  15. Record the date of service and the number of hours on the engine.

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         ACTIVITY:

         1. Change the oil and oil filter on available engines.

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6/28/91 OLR/tf


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