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VI. Ответьте на вопросы к тексту.
1. What is the universal method of starting engines?
2. Why must air compressors be installed in duplicate?
3. In what way is the possibility of the compressor’s not being started
eliminated?
4. What valves does every air starting system use?
5. Where are these valves located?
6. What are the two methods of operating air starting valves?
Вариант IV
Text
Location of Troubles
Engine Will Not Start
1. Not turned fast enough by hand.
Try to continue turning after the valve lifter had been dropped. There is no danger of
backing as with petrol engines. See that the reverse gear is in neutral.
2. Loss of compression.
a) Sticky valves. Remove and clean the valves spindles, and if necessary, polish
with fine emery cloth.
b) Insufficient valve clearance. Check the valve clearances.
c) Valve seatings not tight. Examine these, and if they show sign of being pitted
and are not seated properly, they should be slightly ground in.
d) Dry piston after standing. Pour a small quantity of lubricating oil into each air
intake.
3. Air in the fuel system.
Engine Runs Irregularly
1. Sticky valves.
2. Dirty atomizers.
3. Air in the fuel system.
4. A fuel-pump delivery valve has stuck up.
Remove the delivery valve. If the delivery valve is found to be stuck, it will be due
to dirt, and carefully cleaning the valve and its guide it should move freely. On no
account must emery paper or powder be used.
5. Water in the fuel.
Drain all parts of the fuel system, including the fuel pump and fill up with clean
fuel.
6.
Fuel filter choked.
Remove and wash.
42
VI. Ответьте на вопросы к тексту. 1. What is the universal method of starting engines? 2. Why must air compressors be installed in duplicate? 3. In what way is the possibility of the compressor’s not being started eliminated? 4. What valves does every air starting system use? 5. Where are these valves located? 6. What are the two methods of operating air starting valves? Вариант IV Text Location of Troubles Engine Will Not Start 1. Not turned fast enough by hand. Try to continue turning after the valve lifter had been dropped. There is no danger of backing as with petrol engines. See that the reverse gear is in neutral. 2. Loss of compression. a) Sticky valves. Remove and clean the valves spindles, and if necessary, polish with fine emery cloth. b) Insufficient valve clearance. Check the valve clearances. c) Valve seatings not tight. Examine these, and if they show sign of being pitted and are not seated properly, they should be slightly ground in. d) Dry piston after standing. Pour a small quantity of lubricating oil into each air intake. 3. Air in the fuel system. Engine Runs Irregularly 1. Sticky valves. 2. Dirty atomizers. 3. Air in the fuel system. 4. A fuel-pump delivery valve has stuck up. Remove the delivery valve. If the delivery valve is found to be stuck, it will be due to dirt, and carefully cleaning the valve and its guide it should move freely. On no account must emery paper or powder be used. 5. Water in the fuel. Drain all parts of the fuel system, including the fuel pump and fill up with clean fuel. 6. Fuel filter choked. Remove and wash. 42
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