2ND TERM

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TOPIC: MAINTENANCE PRACTICES AND PRECAUTIONARY MEASURES
CONTENT:
1. Reasons for maintaining farm machine.
2. Maintenance of farm machinery
SUB TOPIC 1: REASONS FOR MAINTANING FARM MACHINE
The reasons for maintenance practice are as follows:
1. To ensure maximum or efficient use of farm machine
2. To keep the machines in a good working condition.
3. To increase their useful life or life span
4. To prevent them from becoming obsolete or from deteriorating
5. To detect or spot the potential machine failure and safety from hazards
6. To prevent vibrations that can produce and irritating noise on the farm.
7. Checking oil and water levels regularly prevents any overheating or seizure of the engine.
8. Maintenance of farm machines at times reduces cost, that is, the cost of purchasing new ones may be high.
EVALUATION: state five reasons why farm machines should be maintained.
SUB TOPIC 2: MAINTENANNCE OF FARM MACHINERY
The following maintenance practices or operations can be carried out on farm machinery.
1. Keep the machine clean by removing all thrash or mud and excess grease oil from machines at the start or at the end of operation.
2. Adhere strictly to manual or manufacturer’s instruction
3. Always use the machine or the implements for the operation for which it was designed.
4. Employ a competent and experienced operator and technicians to handle the machines.
5. Store machines and implement in a cool and dry place, usually under shade.
6. Regularly service the machines.
7. Check water and oil levels of machines regularly where application to ensure that they are at their normal levels to prevent any overheating or seizure.
8. Check hydraulic system where application before operation
9. Ensure complete implement before setting out for work.
10. Ensure that nuts, bolts, screws, or shield are checked and tightened at regular intervals.
11. Worn out tyres, nuts screws, or shield and other parts of the machine should be replaced.
12. Moving parts or joints of farm machines should be oil or greased regularly.
13. Sharpen the blades and repair broken blades where application.
14. Do not overload the machines, that is operate at appropriate speed for field operations and avoid the use under conditions that are not favourable.
15. Check electrical system where applicable.
EVALUATION:
Discuss eight maintenance practices including the precautions you would take to keep the tractor operating safety.
GENERAL EVALUATION
OBJECTIVE TEST
1. One of the following ways is not a maintenance process (a) tool should not be left lying about in the farm. (b) Rub oil or grease or paint metal blades. (c) Rub with water to prevent rusting (d) Blunt cutting edges should be sharpened.
2. The following maintenance practices are necessary for tractor except (a) checking the spark plug (b) checking water level daily and top it if necessary (c) checking the tyre pressures daily before operation (d) checking the electrolyte of the battery every day and top when necessary.
3. There is the need to check the electrical system of the following machine before use except (a) milking machine (b) incubator (c) electrical mill (d) harvester.
4. Keeping machines and implement under shade and dry place will prevent the machines from being (a) stolen (b) misused (c) rust (d) mishandled.
5. Which of the following is not a reason for maintaining farm machines and implement? (a) To keep the machine in a good working condition (b) to increase the useful life of the machine (c) to prevent them from deteriorating (d) to keep the machine as new as it was bought.
ESSAY TEST
1. Enumerate six reasons why farm machines and equipment should be maintained.
2. State ten methods of maintaining farm machines and equipment
3. List five precautionary measures you will adopt in the use of a tractor.
4. State 2 specific maintenance practice required by the following (i) farm machines (ii) incubator (iii) Plough (iv) Sheller (v) Bulldozer (vi) Dryer
WEEK END ASSIGNMENT
Read Evans Agricultural Science for Senior Secondary School Book 1 by M. O Adeniji et al (pages103-116)
PRE READING ASSIGNMENT
Read about farm mechanisation from Evans Agricultural Science for SSS Book 1 by M.O. Adeniji et al.(page 120-125)
WEEK END ACTIVITY
I. Define farm mechanisation
II. State five advantages of farm mechanisation
III. Enumerate five disadvantages of farm mechanisation.

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