КУРС 3

Урок № 46

Monday, the twentieth of February

Тема: Трактори та сільськогосподарські машини

ЗАВДАННЯ 

1. Повторити вивчені слова на минулому уроці:

https://learningapps.org/watch?v=p3i6xhpgj23

https://learningapps.org/watch?v=pvc7q7fwt23

https://learningapps.org/watch?v=p7i5gzq5523

https://learningapps.org/watch?v=p1d7x4g7a23

https://learningapps.org/watch?v=p3uba547t23

https://learningapps.org/watch?v=pynr5079323

2. Finish the sentences - закінчіть речення (письмово):

1) Agriculture is an important … .

2) Economic growth of any country depends on … .

3) The word “agre” means the cultivation … .

4) Life is impossible … .

5) Farm crops are … .

6) There are two main branches of agricultural production - … .

7) Animal husbandry is a branch of agriculture including the breeding of … .

8) Crop production is the practice of … .

9) The most important crops grown by man are … .

10) Farm animals are highly important … .

11) Farmers improve the physical condition of the soil …

3. Робота з текстом:

Operating and Maintaining Tractors

1. A tractor must be well maintained and operated so that the need for repair is reduced to a minimum. Repairs are expensive and there may be difficulties in getting the necessary parts and installing them.

2. A tractor operator should be able to operate, adjust and maintain his tractor. He should have knowledge and skill necessary for doing unspecialized tractor repair. The more specialized repair such as reboring cylinders, replacing worn parts is to be done by a qualified mechanic.

3. Most tractor service work includes the engine, so the repair and adjustment information on engines is useful.

4. A clutch is a disk mechanism operating on a friction basis. A clutch permits the gradual application of power from the engine to the load. It permits the disengagement of the engine from the drive mechanism for starting, for shifting of gears and for idling.

Clutch should be check periodically, since the pedal linkage wears with use and may need adjustment. A tractor operator must know the method of adjusting the linkage. Lack of clearance of the clutch pedal may reduce power and cause overheating.

5. When a tractor’s transmission needs repairing, special equipment is necessary. Several checks on the transmission can be made by the operator of a tractor.

- If oil leaks are present the gaskets need tightening or replacing.

- The axle bearing is to be examined by lifting each wheel up and down with a bar and by pushing and pulling each wheel side wards.

- Rear wheel brakes should be checked for wear and for the adjustment needed.

- The belt pulley bearing and drive gear need checking for wear. The belt pulley mechanism needs regular cleaning and servicing, a special lubrication device being used for its lubrication.

- New lubricant must be added to maintain the oil at its proper level.

- After draining the transmission it is flushed with kerosene and refilled with transmission lubricant.

6. The belt pulley is usually located in the right side or at the back. On some tractors the belt pulley may or must be removed when the tractor is not being used for belt work.

7. The power take – off shaft on a tractor is powered directly from the engine and may be used to operate machines. It is usually controlled by a separate disk clutch which is operated hydraulically. Thus, the motion of the tractor does not affect the speed of the PTO – shaft and starting or stopping the PTO – shaft does not affect the speed of the tractor. One must stop the shaft before dismounting from a tractor.

8. The steering mechanism is to be examined for wear and for repairs and adjustment needed. If the steering is of the hydraulic type, there is no mechanical connection between the steering wheel and the front axle. If the steering mechanism has a mechanical linkage, the linkage should be lubricated and checked for wear periodically.

9. Tractors are often equipped with brakes that are hydraulically operated. The tractor operator has to inspect the brake mechanism before adjusting the hydraulic break valve and the brake pedals.

10. All trailing implements are often attached to the drawbars being equipped with different types of drawbars. The tractor operator must follow instructions regarding hitching and adjusting the drawbar.

11. The proper care and preventive maintenance of a tractor are very important so that break downs and expensive repairs are as rare as possible.

Випишіть нові для вас слова з тексту і вчіть їх

==========================

При виконанні письмових робіт спочатку правильно записуйте число.

Перед виконанням вправи запишіть її номер та сторінку, далі виконуйте вправу. Пишіть виключно синьою пастою! На полях нічого не пишіть і не робіть ніяких позначок.
В ідеалі зошит повинен бути у лінію – це мова, хоч і англійська.
Будь-ласка, охайно виконуйте всі письмові завдання, а не одну найменшу вправу.
Фото зошита надсилайте мені, вашому викладачу.