LESSON 2
PRACTICE EXERCISE
The following items will test your grasp of the material covered in this lesson. There is only one correct
answer for each item. When you complete the exercise, check your answer with the answer key that
follows. If you answer any item incorrectly, study again that part of the lesson which contains the
portion involved.
Situation: You are required to perform operator maintenance on the M157 Smoke Generator System to
ensure that it will perform properly in the next mission.
1.
What should you use to clean the mechanical felt filters on the air compressor?
A.
Dry-cleaning solvent
B.
Fog oil and a small brush
C.
A dry cloth
D.
Compressed air
2.
What should you use to clean the strainer in the filler hole of the fog oil tank?
A.
Dry-cleaning solvent
B.
Fog oil and a small brush
C.
A dry cloth
D.
Pressurized air
3.
When removing the engine head assembly from a hot smoke generator, what must you do
immediately?
A.
Adjust the fog oil pump pressure.
B.
Drain the fog oil tank.
C.
Purge the air tank.
D.
Replace it with a spare engine head.
4.
How long after depressing the fire test switch on the control panel should the warning light come
on?
A.
One second
B.
Two seconds
C.
Three seconds
D.
Four seconds
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CM3305